Answer:
34a^2 + 21a - 20
Step-by-step explanation:
(12a^2 + 6a -8) - (-22a + 12 - 15a)
12a^2 + 6a - 8 + 22a + 12 - 15a
34^2 + 6a - 8 - 12 + 15a
34^2 + 21a - 20
If -3=4x+7 what is x?
Answer: x is -2.5 or [tex]-2\frac{1}{2}[/tex]
Step-by-step explanation:
We need to solve for x
-3=4x+7
Step 1) Subtract 7 from both sides
-3-7=4x+7-7
-10=4x
Step 2) Divide both sides by 4 to isolate x
-10=4x
[tex]\frac{-10}{4} =\frac{4x}{4} \\-2.5=x[/tex]
Please help! I know me have 10 minutes! Find all solutions to 20cos(2pi/5 x) = 10✔️2
Answer: A
Step-by-step explanation:
You have:
[tex]20cos(\frac{2\pi }{5} x)=10\sqrt{2}[/tex]
Begin by dividing both sides by 20 to get:
[tex]cos(\frac{2\pi }{5} x)=\frac{\sqrt{2} }{2}[/tex]
Take the arccosine of both sides to get:
[tex]arccos(cos(\frac{2\pi }{5} x))=arccos(\frac{\sqrt{2} }{2})[/tex]
[tex]\frac{2\pi }{5} x=arccos(\frac{\sqrt{2} }{2} )[/tex]
First of all, lets find the right side. Cosine of what gives sqrt 2 over 2? That would be pi/4, plus 2npi. Another solution would be 7pi/4, plus 2npi. We have:
[tex]\frac{2\pi }{5} x=\pi /4+2n\pi[/tex]
[tex]\frac{2\pi }{5} x=7\pi /4+2n\pi[/tex]
Isolate 'x' to get:
[tex]x=\frac{5}{2\pi } (\pi /4+2n\pi)=\frac{5}{8} +5n[/tex]
[tex]x=\frac{5}{2\pi } (7\pi /4+2n\pi)=\frac{35}{8} +5n[/tex]
Arrange the expressions below in order from least to greatest. place the least at the top and greatest at the bottom. ( 72 ÷ 8 ) − 2 × 3 1 72 ÷ ( 8 − 2 ) × 3 1 72 ÷ ( 8 − 2 ) × ( 3 1 ) 72 ÷ 8 − 2 × ( 3 1 )
The expressions in order from least to greatest 72 / 8 - 2 x (3 + 1), (72 / 8) - 2 x 3 + 1, 72 / (8 - 2) x 3 + 1 and 72 / (8 - 2) x (3 + 1).
What is BODMAS?BODMAS stands for B - Bracket, O - order of Power, D - Division, M - Multiplication, A - Addition, and S - Subtraction.
To Arrange the expressions below in order from least to greatest. place the least at the top and the greatest at the bottom
72 / 8 - 2 x (3 + 1) equals 1
(72 / 8) - 2 x 3 + 1 equals 4
72 / (8 - 2) x 3 + 1 equals 37
72 / (8 - 2) x (3 + 1) equals 48
Thus, The expressions in order from least to greatest 72 / 8 - 2 x (3 + 1), (72 / 8) - 2 x 3 + 1, 72 / (8 - 2) x 3 + 1 and 72 / (8 - 2) x (3 + 1).
Learn more about BODMAS;
https://brainly.com/question/23827397
Wind is
• air moving from areas of high pressure to areas of low pressure.
• air moving from areas of low pressure to areas of high pressure.
air moving from areas of high temperature to areas of low temperature.
Wind is caused by differences in the atmospheric pressure. When a difference in atmospheric pressure exists, air moves from the higher to the lower pressure area, resulting in winds of various speeds. On a rotating planet, air will also be deflected by the Coriolis effect, except exactly on the equator.
Hope this helped!
The bar graph shows how much time a typical student spends on different activities each day. However, the way the graph has been drawn can make it somewhat misleading. Choose the statement that might WRONGLY be made on the basis of the graph.
A) More time is spent on chores than on eating.
B) The largest amount of time is spent sleeping.
C) More students spend more time on homework than on chores.
D) Twice as much time is spent on TV as is spent on homework.
Answer: the Answer is D) Twice as much time is spent on TV as is spent on homework
Step-by-step explanation:
Solve for X. Please help!!!
Answer:
58
Step-by-step explanation:
First, we subtract 32 from 90(90deg-32deg) since the entire corner of the problem is the main area we will be focusing on. We get 58deg, and that's your answer!
Answer:
x = 58
Step-by-step explanation:
Look at the picture I have below.
It shown a complementary and supplementary angle.
As we can see there is complementary and supplementary angle in the given picture you have.
Also note that:
Complementary = 90 degree
Supplementary = 180 degree
Since we are solving for x and it close to complementary thus the equation can be written as:
x + 32 = 90
Subtract both sides by 32
x + 32 - 32 = 90 - 32
90 - 32 = 58
Hence x = 58
Kavinsky
15 × [-5] +15 × [-3] = solution
[tex]Heyo![/tex]
SaddySokka is here to help!!
Let's do this step-by-step explanation!
[tex](15)(-5)+(15)(-3)[/tex]
[tex]=-75+(15)(-3)[/tex]
[tex]=-75+-45[/tex]
[tex]=-120[/tex]
Answer:
[tex]-120[/tex]
Hopefully, this helps you!!
Have a great day!!
SaddySokka~
Answer:
-120
Step-by-step explanation:
15×[-5]+15×[-3]
Use BODMAS
-75+-45
-120
What is true about triangle LMN? Check all that apply.
y
LO
L
LMI MN.
N00
The triangle is scalene.
The triangle is equilateral.
The triangle is isosceles.
The triangle is a right triangle.
х
5
23
IN
M
-2
-3
on
Answer: A., D., and E.
Step-by-step explanation: On Edge!!
The given information none of the statements about triangle LMN confirmed as true.
Based on the given options, "Check all that apply," I'll evaluate each statement about triangle LMN:
The triangle is scalene: A scalene triangle is a triangle with three unequal side lengths. Since no information is provided about the side lengths of triangle LMN, determine if it is scalene. Thus, it cannot be confirmed as true.
The triangle is equilateral: An equilateral triangle is a triangle with three equal side lengths. Without any information about the side lengths of triangle LMN, determine if it is equilateral. Thus, it cannot be confirmed as true.
The triangle is isosceles: An isosceles triangle is a triangle with at least two equal side lengths. Without any information about the side lengths of triangle LMN, determine if it is isosceles. Thus, it cannot be confirmed as true.
The triangle is a right triangle: A right triangle is a triangle with one right angle (90 degrees). No information is given about the angles of triangle LMN, so determine if it has a right angle. Thus, it cannot be confirmed as true.
To know more about triangle here
https://brainly.com/question/2773823
#SPJ2
Consider the diagram below.
Which of the following is a correct congruence statement for the triangles?
ABCDEF
AABC SAEDF
ABC SAEFD
Answer:
ΔABC ≅ ΔEFD
Step-by-step explanation:
The congruence statement will list corresponding parts of the figures in the same order.
The left side of the statement is ΔABC, so we need to find the parts that correspond to A, B, and C, and list them in the same order. We notice that A is the marked angle, as is E. B is the other end of the line segment with 1 hash mark, as is F. Then corresponding vertices are ...
A and EB and FC and DConsequently, the congruence statement must be ...
ΔABC ≅ ΔEFD
A plane leaves an airport traveling at 400 mph in the direction n 45° e. a wind is blowing at 40 mph in the direction n 45° w. what is the ground speed of the plane?
The ground speed of the plane is 402 mph
We have given,
A plane leaves an airport traveling at 400 mph in the direction n 45° e. a wind is blowing at 40 mph in the direction n 45° w.
Now, Draw a right triangle with 400 and 40 as the two legs.
This is a right angle because 45 degrees NE is perpendicular to 45 degrees NW.
So, the two side lengths are 400 and 40
Using the Pythagorean theorem,
What is the Pythagorean theorem?(a^2 + b^2 = c^2)
[tex]400^2+40^2=c^2\\\\c^2=160000+1600\\c^2=161600\\c=401.99[/tex]
Therefore the answer is 401.995, or 402mph.
To learn more about the speed visit:
https://brainly.com/question/4931057
The length of a rectangle is 7 cm less than four times its width. The area of the rectangle is 36 square cm
Answer:
W = 4 cm and L = 9 cm
Step-by-step explanation:
I don't see a question, but will assume the problem wants the length(L) and width(W) of the described rectangle.
Let L and W stand for Length and Width.
Area of a rectangle is given by L*W
We are told that L*W = 36 cm^2
We are also told that L = 4W-7 ["length of a rectangle is 7 cm less than four times its width"]
Substituting the second into the first equation:
L*W = 36 cm^2
(4W-7)*W = 36 cm^2 [L = 4W-7]
4W^2-7W - 36 cm^2 = 0
(W-4)(4W+9) = 0
The roots are: 4 and -(9/4)
We'll use the positive value: W = 4
Since L = 4W-7:
L = 4(4)-7
L = 16-7
L = 9 cm
The temperature is dropping at a rate of five degrees per hour.
Let d represent the number of degrees the temperature drops.
Let t represent the number of hours that pass.
Which is the dependent variable?
Answer:
The number of degrees the temperature drops°
Step-by-step explanation:
hope this helps
and hope this is the answer you was looking for
pls mark brainliest
Nada drives her car at an average speed of 60 miles per hour. She is planning a drive between 150 and 180 miles. Write and solve an inequality to model how many hours Nada will be driving
The inequality model that can be used to solve the number of hours it would take Nada to drive is 2.5 ≤ x ≤3.
What is the number of hours it would take Nada to drive?
Average speed is the total distance travelled per time.
Average speed = total distance / total time
Time = total distance / average speed.
Time if she drives 150 miles = 150 / 60 = 2.5 hours
Time if she drives 180 miles = 180 / 60 = hours
2.5 ≤ x ≤3.
To learn more about average speed, please check: https://brainly.com/question/21734785
help me please need help
Answer:
Step-by-step explanation:
1. x -> opposite side of 48°
o → hypotenuse
b → adjacent side of 48°
[tex]\sf Sin \ 48^\circ = \dfrac{opposite \ side }{hypotenuse}\\\\\\0.7431 = \dfrac{15}{o}\\\\\\0.74 * o = 15\\\\\\ o = \dfrac{15}{0.74}\\\\\\[/tex]
o = 20.27
[tex]\sf cos \ 48^\circ = \dfrac{adjacent \ side }{hypotenuse}\\\\\\0.67 =\dfrac{b}{o}\\\\\\0.67=\dfrac{b}{20.27}[/tex]
b = 0.67*20.27
b = 13.58
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2) i → opposite side of 25°
n → adjacent side of 25°
[tex]\sf Sin \ 25 =\dfrac{i}{t}\\\\\\0.42=\dfrac{i}{30}\\\\\\0.42*30=i[/tex]
i = 12.6
[tex]\sf Cos \ 30^\circ =\dfrac{n}{t}\\\\0.91=\dfrac{n}{30}\\\\\\0.91*30 = n[/tex]
n = 27.3
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3) a → opposite side of 70°
e → adjacent side of 70°
[tex]Sin \ 70^\circ =\dfrac{a}{l}\\\\0.94 =\dfrac{a}{25}\\\\0.94*25=a[/tex]
a = 23.5
[tex]\sf Cos \ 70^\circ =\dfrac{e}{l}\\\\0.34=\dfrac{e}{25}\\\\0.34*25=e[/tex]
e = 8.5
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4)
[tex]\sf Sin \ 52^\circ = \dfrac{x}{75}\\\\0.79*75=x\\[/tex]
x = 59.25
[tex]\sf Cos \ 52^\circ = \dfrac{z}{75}\\\\0.62*75 =z[/tex]
z = 46.5
Suppose a charity received a donation of $27.9 million. If this represents 22% of the charity's donated funds, what is the total amount of its donated funds?
Round your answer to the nearest million dollars.
well, the total amount is "x", which oddly enough is 100%, and we also know that 22% of that is 27.9 millions, so
[tex]\begin{array}{ccll} \stackrel{millions}{amount}&\%\\ \cline{1-2} x & 100\\ 27.9& 22 \end{array} \implies \cfrac{x}{27.9}=\cfrac{100}{22} \\\\\\ 22x=2790\implies x=\cfrac{2790}{22}\implies x\approx 127[/tex]
PLEASE HELP!!!!!!!!!!!
Answer:
The answer is B. [tex]\frac{2x+1}{x^{2}-7} ,x\neq \sqrt{7}[/tex]
Step-by-step explanation:
[tex]f(x)=2x+1\\g(x)=x^{2} -7[/tex]
Focusing on the denominator makes it equal to = 0
[tex]x^{2} -7=0\\x^{2} =7\\x=+\sqrt{7},-\sqrt{7}[/tex]
If the denominator equals zero then the equation ends up undefined. A number over zero, zero can not go divided into a number.
Create a linear function f(x) that represents this relationship in terms of x
Answer:
the linear function is f(x)=6x-24
Step-by-step explanation:
I hope it helped you
What’s the answer for this ?
Step-by-step explanation:
1)-1, 0, 1... do like this
A function is given.
f(x) = (3*0.04*x) + x
What is f (850)?
f(850) =
The function f(x) = (3 * 0.04 * x) + x is a linear function, and the value of f(850) is 952
How to evaluate the function?The function is given as:
f(x) = (3 * 0.04 * x) + x
Substitute 850 for x
f(850) = (3 * 0.04 * 850) + 850
Evaluate the product
f(850) = 952
Hence, the value of f(850) is 952
Read more about linear functions at:
https://brainly.com/question/4025726
Estimate the product by rounding 4.46 x 5.75
Answer:
24
Step-by-step explanation:
Round;
4.46 ≈ 4
5.75 ≈ 6
So;
4 x 6 = 24
Hope this helps!
Answer:
I think that the answer is 25
Step-by-step explanation:
I didn't really undertsand the question so I just multiplied 4.46 times 5.75 and than rounded to the nearest ones place. The answer was 25.645
Hope this helped sorry if it is not the answer that you were looking for have a nice day.
What does the expression (8x)^2 represent?
Answer:
D
Step-by-step explanation:
(8x)² is the area of a square with a side length 8x,
because we want to find out how much space is inside a square that has two dimensions 8x length and 8x width.
How do you recognize an Arithmetic Sequence? Can you find terms within an arithmetic sequence using a formula
Answer:
An arithmetic sequence is an ordered set of numbers where the difference between each consecutive term is the same (this is called the "common difference").
The formula for each term in an arithmetic sequence is:
[tex]\sf a_n=a+(n-1)d[/tex]
where:
a is the first term in the sequenced is the common difference between consecutive termsn is the position of the term in the sequenceExample
Sequence: 3, 10, 17, 24, 31, ...
The first term in the sequence is 3, therefore a = 3
The common difference can be found by subtracting one term from the next: d = 10 - 3 = 7
Substituting these values into the equation for the nth term:
[tex]\implies \sf a_n=3+(n-1)7[/tex]
[tex]\implies \sf a_n=3+7n -7[/tex]
[tex]\implies \sf a_n=7n -4[/tex]
Therefore, if we want to find the 5th term of the sequence, simply input
n = 5 into the found equation:
[tex]\implies \sf a_5=7(5)-4=31[/tex]
Yes we can find terms
The formula is
a_n=a+(n-1)dWhere
a=first terma_n=nth termd=common differenceHURRY! BRAINLY WILL BE GIVEN!
A bicycle wheel travels 28π in. for each revolution. What is the radius of the wheel? Enter your answer in the box.
Answer:
The wheel radius is 18
Step-by-step explanation: Just got it right
The circumference of a circle is 3π cm. What is the area of the circle?
Question 3 options:
9πcm2
1.5πcm2
6πcm2
2.25πcm2
circumference of circle: 2πr
2πr = 3πr = 1.5 cmarea of circle: πr^2
πr^2π(1.5)^22.25πAt the sewing store, Rita bought a bag of mixed buttons. She got 16 buttons in all. 12 of the buttons were large. What percentage of the buttons were large?
Answer:
75%
Step-by-step explanation:
Given:
Total = 16 buttons
Large = 12 buttons
To Find:
What percentage of the buttons were large?
Solution:
Since, we know that it asking for percentage(%) of buttons were large. As well as total is 16 buttons and 12 button were large.
Thus,
Formula : a/b × 100
Let's
a = 12
b = 16
Therefore,
12/16 × 100
.75 × 100
= 75%
Hence, the percentage of the buttons that Rita bought were large is 75%
Kavinsky
URGENT HELP ASAP GRADE 11 MATH
Step-by-step explanation:
Shouldn't it be x^1 y. It's Because these are cancelled out.
And IQ.
(2)
QUESTION THREE
(30 MARKS)
3. 1 Apart from being in the education sector, Richfield also has a fleet of cars available for rent.
Statistics shows that the Mercedes AMG G63 is the most rented car among their fleet and one in
four customers request this make.
If 5 of today's rentals are selected, what is the probability that 2 clients would have rented an
AMG G63?
(15)
3. 2 Bicycles for hire at the Durban Beach front are deemed beyond repair when one or both its
wheels are damaged. According to current statistics, there is an 8% chance that the front wheel
gets damaged and a 12% chance the back wheel gets damaged.
What is the probability that a hired bike will be deemed beyond repair, provided that the wheels
get damaged independently of each other?
(15)
The probability that 2 clients would have rented an AMG G63 from the 5 people will be 0.0625.
How to calculate probability?From the information given, the probability that 2 clients would have rented an AMG G63 from the 5 people will be:
= 0.25 × 0.25
= 0.0625
The probability that a hired bike will be deemed beyond repair, provided that the wheels get damaged independently of each other will be:
= 8% × 12%
= 0.08 × 0.12
= 0096
Learn more about probability on:
https://brainly.com/question/24756209
#SPJ1
Help Me write the inequality that represents the number line! Sorry the picture is bad quality!
Answer:
x ≤ -6
Step-by-step explanation:
The line is moving towards the left, which means that the numbers are getting smaller. X is going to be less than something.
The dot on -6 is colored in. This means that -6 is included in our inequality. [X could equal -6]
So, we could write the equation x ≤ -6
Look at this parallelogram. Find the value of s. perimeter = 20 feet
7ft and s
Answer: 3
Step-by-step explanation: perimeter = 2( length and width )
20 = 2(7 +s)
20 = 14 + 2s
6= 2s
S =3
A large multiplex movie house has many theaters. The largest theater has 41 rows. There are 19 seats in the first row. Each row has two seats more than the previous row. How many total seats are there in this theater?
Answer:
101
Step-by-step explanation:
I time 41x2 than add 19