work it out you cheater lol
It took a car 3 days to travel 3106 miles. What was this car's average speed, in miles per hour? (round to the nearest mile per hour)
Answer:
43 mph
Step-by-step explanation:
1 day = 24 hours
3 days = 3 × 24 hours = 72 hours
The car taveled 3106 miles in 72 hours.
average speed = distance/time
average speed = (3106 miles)/(72 hours)
average speed = 43 mph
Answer: 43 mph
Explanation:
3 days is 72 hours.
R=D/T
Divide 3106 by 72
= 43 (rounded)
Using technology, we found that Juan's investment account can be modeled by the function, c(x)=3x2-2x+10, in
thousands of dollars. What was Juan's initial investment?
O $5
o $10
o $5,000
$10,000
Answer:
$10
Step-by-step explanation:
"Initial" here means "beginning." That is, time = x = 0. If we let x = 0 here we get c(0) = 10, which is the desired answer. Juan's initial investment was $10.
Which of the following is a scalar quantity, and not a vector?
velocity
temperature
acceleration
displacement
Answer:
Which of the following is a scalar quantity, and not a vector?
Temperature
Step-by-step explanation:
Force: The interaction which after applying on a body changes or try to change the state of rest or state of motion is called force.
It is a vector quantity.
Temperature: The measurement of hotness is called temperature.
It is a scalar quantity.
Scalar quantities: The physical quantities which have only magnitude and no direction are
called scalar quantities or scalars.
Examples: Mass, volume, density, time, temperature, electric current, Luminious intensity, etc. Vector quantities: The physical quantities which have both magnitude and direction and obey
the laws of vector addition are called vector quantities or vectors.
Pls help
I don’t understand
Answer:
2916 square inches
Step-by-step explanation:
Surface area of rectangular prism:
Here, area of the top of the prism is not included.
l = 24 in ; b = 20 in ; h = 16 in
Surface area = lb + 2bh + 2lh
= 24 * 20 + 2*20*16 + 2*24 *16
= 480 + 640 + 768
= 1888 sqaure inches
Surface area of triangular prism:
length = 24 in ; a = b = 16 in ; base = 20 in and height = 13 in
[tex]\sf \text{Base area=$2*\dfrac{1}{2}*base *height = base *height$}[/tex]
= 20 * 13
= 260 square inches
Surface area = length*(a +b) + base area
= 24*(16+16) + 260
= 24 * 32 + 260
= 768 + 260
= 1028 square inches
Surface area of composite figure = 1888 + 1028
= 2916 square inches
1. Select all equations that are parallel to the line 2x + 5y = 8.
A. y = x +4
B. y = -x +4
C.y-2= (x+1)
D.y-2=-(x+1)
E. 10x + 5y = 40
The line which is parallel to the line 2x + 5y =8 is [tex]y= -\frac{2}{5} x+4[/tex] .
The correct option is (B) [tex]y= -\frac{2}{5} x+4[/tex]
What is parallel line in linear equation in two variables?
If the lines are parallel, there is no solution for the pair of linear equations. If there is no solution of the given pair of linear equations, the equations are called inconsistent.
As we know the condition for two parallel line given by the equation
[tex]a_1 x+b_1y+c_1=0\\a_2x+b_2y+c_2= 0[/tex]
is:
[tex]\frac{a_1}{a_2} \; = \; \frac{b_1}{b_2}[/tex] ≠ [tex]\frac{c_1}{c_2}[/tex]
We have the given equation as 2x + 5y =8
the equation which is parallel to 2x + 5y= 8 be
B) [tex]y= -\frac{2}{5} x+4[/tex]
5y = -2x +20
2x+5y=20
So, it satisfies the condition [tex]\frac{a_1}{a_2} \; = \; \frac{b_1}{b_2}[/tex] ≠ [tex]\frac{c_1}{c_2}[/tex]
Rest of the equation aren't satisfying the condition [tex]\frac{a_1}{a_2} \; = \; \frac{b_1}{b_2}[/tex] ≠ [tex]\frac{c_1}{c_2}[/tex].
Hence the line parallel to 2x+ 5y =8 is [tex]y= -\frac{2}{5} x+4[/tex].
Learn more about the parallel line in linear equation here:
https://brainly.com/question/20847660
#SPJ1
How wide is a 3 ft doorway in a 1/4 inch scale drawing?
Answer:
9 inches
Step-by-step explanation:
Convert from feet to inches by multiplying by 12:
3*12 = 36
Multiply by the scale factor of 1/4:
36*1/4 = 9
9 inches
CAN SOMEBODY EXPLAIN HOW TO DO THIS IT'S MY 5TH TIME ASKING AND NOBODY EVEN HELPS ME!
i used caps to get ur attention 7u7
Answer:
10x20+10x6=260
Step-by-step explanation:
Answer:
260 cm²
Step-by-step explanation:
Area of the rectangle
= l × w
= 20 × 10
= 200 cm²
Area of the triangle
= ½bh
= ½ × 20 × 6
= ½ × 120
= 60 cm²
Area of the total figure
= Area of the rectangle + Area of the triangle
= 200 cm² + 60 cm²
= 260 cm²
________
Hope it helps ⚜
Prove that ABCD is not a parallelogram.
Answer:
Segment AD is 4 units long, while segment BC is 5 units long. If this figure was a parallelogram, these two segments would be equal to each other.
Step-by-step explanation:
solve for x
please please please no links
Answer:
x = 5
Step-by-step explanation:
Well all you have to do is use this formula
75 + 36x -3 = 180
How did I figure that out?? Well I know that the angle next to 75 is the same as 36x-3 becuase that are alternate interior angles and 75 and 36x-3 would be a linear pair meaning that the product of the them would be 180, Thus making the formula
Now all you have to do is combine like terms:
75 -3 = 72
72 + 36x = 180
subtract 72 from both sides
72 -72 = 0
180- 72 = 108
36x = 108
divide both sides by 36
X= 5
What is the radius of the cone? 2 units 3 units 6 units 9 units
Answer:
where is the diameter?
Step-by-step explanation:
Answer:
Step-by-step explanation:
a) What is the size of angle ABC?
b) Use your answer to part a) to work out
the size of reflex angle CBD.
Give your answers to the nearest degree.
60 70
90
50
150 140 130 120 110 100
A-
10 20 30
30 40
B
100 110 120 130 140 150
80 70 60 50 40 30
mga pangungg
·D
The measure of the angle ∠ABC is 110° and the measure of the reflex angle ∠CBD is 70°.
What is an angle?Angle is the space between the line or the surface that meets. And the angle is measured in degree. For complete 1 rotation, the angle is 360 degrees.
Linear angle - If the total of two angles is 180 degrees, they are said to be linear angles.
The measure of the angle ABC will be
∠ABC = 110°
The angle ∠ABC and ∠CBD are the linear angles. Then we have
∠ABC + ∠CBD = 180°
110° + ∠CBD = 180°
∠CBD = 70°
More about the angled link is given below.
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I really need help understanding when/ what situations to use sine rule and cosine rule with triangles, plssss.
thank you :)))
Answer:
See below :)
Step-by-step explanation:
If you want a missing angle or side in one pair, and you have at least one side and angle pair, use the sine rule.
If you want a remaining side, and you have the other two sides and the angle opposite the unknown side, use the cosine rule.
If you want an angle, and you have all three sides, use the cosine rule rearranged for angles.
I attached a picture to help explain better :)
Each of the equal sides of an isosceles triangle is 5 inches more than twice the third side. If the perimeter of the triangle is 55 inches, find the sides of the triangle
Answer:
9 23 23
Step-by-step explanation:
Two sides are equal and are each 2x + 5 ( x = third side)
add the three sides to get 55 inches
2x + 5 + 2x+5 + x = 55
5x = 45
x = 9 so the sides are 9 and 23 and 23
Pls help me i am st patrick
Answer:
7
Step-by-step explanation:
15+2=17
20-17=3
So, these three people definitely like lemonade
11-3=8
So, eight people like both coffee and lemonade
15-8=7
Ans: 7 people like coffee but not lemonade
Find the median of:
21, 7, 32, 45, 28, 78
A 12 foot ladder is resting against a wall. The base of the ladder is 2.8 feet from the base of the wall.How high up the wall will the ladder reach? Show all work and round to the nearest tenth.
Answer:
≈11.7 [ft].
Step-by-step explanation:
1) the ladder and the wall form the right triangle, where the length of the ladder (12 ft) is hypotenuse and the distance between the base of the latter and the base of the wall is the shortest side.
2) the longest side can be calculated according the Pythagoras theorem:
[tex]L=\sqrt{12^2-2.8^2}=\sqrt{136.16}=11.7[ft].[/tex]
Shay walks to softball practice. She leaves her home and walks 6 blocks north. She then turns east and walks 4 more blocks to the field. How far is the softball field from Shay’s home? Pythagorean Theorem
Answer:
7
Step-by-step explanation:
(a squared) plus (b squared) equals (c squared)
(6 squared) plus (4 squared) equals (c squared)
36+16=c squared
c equals 7
Answer:
7.21 blks
Step-by-step explanation:
Pythag theorem
a^2 + b^2 = c^2
6^2 + 4^2 = c^2
52 = c^2
c = sqrt 52 = 7.21 blcks
In this box-and-whisker plot, what is the maximum value of the data?
OPTIONS :
53
56
60
68
Answer:
68
Step-by-step explanation:
As the date in the box plot ends at 68. it is the maximum value
A quadrilateral is circumscribed about a circle. The sum of the lengths of its two opposite sides is 21 cm, and the radius of the circle is 5 cm. Find the area of the quadrilateral.
I will give 100 points
Answer:
105 cm²
Step-by-step explanation:
Properties of a quadrilateral circumscribed about a circle
Each side of the quadrilateral is a tangent to the circle.The sums of the measures of the opposite sides of the quadrilateral are equal. The area of the quadrilateral is half the product of its perimeter and the radius of the circle.Given:
Radius = 5 cmSum of the lengths of its two opposite sides = 21 cmTherefore, the sum of the other pair of opposites is also 21 cm.
So the perimeter = 21 + 21 = 42 cm
[tex]\implies \sf Area=\dfrac12\cdot42\cdot5=105\:cm^2[/tex]
Looking like trapezoid
area:-
1/2(sum of parallel sides)(Height)1/2(21+21)(5)1/2(42)(5)21(5)105cm²A sample of bacteria is growing at an hourly rate of 6% according to the continuous exponential growth function. The sample began with 15 bacteria. How many bacteria will be in the sample after 18 hours? Round your answer down to the nearest whole number
Answer:
16
Step-by-step explanation:
6 percent of 15= 0.9
0.9*18≈16
(4×10^-1) + (4×10^-1)
Give your anwser in standard form.
Answer:
0.8
Step-by-step explanation:
Hope this helps!
The radius of a circle is 3 yards. What is the circle's circumference?
r=3 yd
Use 3.14 for .
yards
Answer: 18.84
Step-by-step explanation: Circumference is calculated as 2 × 3.14 × radius
need some help with the question in the image
cheers
Step-by-step explanation:
(58.29+7.26)÷5
= 59.7
159⅕ = -
root[(3.7+2.5)²+(4.2+3.1)²]
= root[(6.2)²+(7.3)²]
= root[38.44 + 53.29]
= root91.73
~ 10
nsurance company executives surveyed 200 young adults about their first motor vehicle. The results are shown in the two-way table. A 4-column table with 3 rows. Column 1 has entries 4, 6, 8. Column 2 is labeled car with entries 118, 16, 2. Column 3 is labeled truck with entries 6, 12, 6. Column 4 is labeled S U V with entries 18, 20, 2. The columns are titled motor vehicle and the rows are titled cylinders. A survey participant is randomly selected. Let E be the event that the participant’s first motor vehicle had eight cylinders and let T be the event that the participant’s first motor vehicle was a truck. What is the value of P(E or T)? 0.03 0.14 0.17 0.28
Answer:
B. 0.14
Step-by-step explanation:
Just add the values in the eight row and truck coloum and divide by 200.
The diagram below shows the diameter of a circular stump. Which of the following is closest to the circumference of the stump? A) 5.495 ft² B) 9.617 ft² C) 10.99 ft² D) 38.465 ft² its 3.5 ft wide
Answer:
C. 10.99
Step-by-step explanation:
i took the test
Answer:
C. 10.99
Step-by-step explanation:
usatest prep
Find the functional values g (-3), g (0), and g (5) for the compound function.
g (x) = 7 if x ≤ 0
1 over x if x > 0
Answer:
[tex]g(-3)=7[/tex]
[tex]g(0)=7[/tex]
[tex]g(5)=\dfrac15[/tex]
Step-by-step explanation:
[tex]g(x) =\begin{cases}7 & \text{if } x \leq 0 \\ \\\dfrac{1}{x} & \text{if } x > 0\end{cases}[/tex]
This means:
when x is equal to zero or less than zero, g(x) will always be 7.when x is more than zero, g(x) is [tex]\frac{1}{x}[/tex][tex]\implies g(-3)=7[/tex]
[tex]\implies g(0)=7[/tex]
[tex]\implies g(5)=\dfrac15[/tex]
[tex]\sf\f(x)=\grey{\begin{cases}\rm 7\quad ,x\geqslant 0\\ \rm \dfrac{1}{x}\quad ,x>0\end{cases}}[/tex]
So
-3,0 ≤05>0Hence
g(-3)=g(0)=7g(5)=1/5Si se multiplica un numero por uno,¿que numero se obtiene?
Answer:
Si se multiplica un numero por uno, obtendras el numero original, por ejemplo 54x1 = 54, y 2x1= 2.
Step-by-step explanation:
Loren solved the equation 10 = startfraction 19 over 9 endfraction (149) b for b as part of her work to find the equation of a trend line that passes through the points (1, 130) and (10, 149). what error did loren make? she should have solved 10 = startfraction 9 over 19 endfraction (149) b for b. she should have solved 1 = startfraction 19 over 9 endfraction (130) b for b. she should have solved 149 = startfraction 19 over 9 endfraction (10) b for b. she should have solved 130 = startfraction 9 over 19 endfraction (1) b for b.
The error which Loren made was C. she should have solved 149 = startfraction 19 over 9 endfraction (10) b for b.
What is an Error?This refers to those miscalculations or misjudgments about a situation or a mathematical solution to give wrong values.
Hence, because Loren is solving an equation of 0 = startfraction 19 over 9 endfraction (149) b for b to find the equation of a trend line that passes through the points (1, 130) and (10, 149), the error she made was option C.
This means that using point (10,149) which takes the form (x,y) the equation will be: 149=19/9(10)+b
Read more about maths errors here:
https://brainly.com/question/5497588
Answer:
C
Step-by-step explanation:
(3.6 × 10-5) ÷ (1.8 × 103)
Give your answer in standard form.
Consider a two-tailed test with a level of confidence of 99%. The p-value is determined to be 0.05; therefore, the null hypothesis ___________.
Answer:
fail to reject the null
Step-by-step explanation:
99% confidence is equivalent to .01
the p-value is > .01 so fail to reject the null
if it was < .01 you would reject the null