Answer:
Step-by-step explanation:
Don’t know
Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.
Answer:
Answer A
Step-by-step explanation:
The coefficients of the x terms are 1, 4 and 7. Thus, the discriminant, b^2 - 4ac, is 16 - 4(1)(7) = -12 = -3·4. Because the discriminant is negative we know that there are two unequal, complex roots.
-4 ± i√3√4 -2 ±i√3
The roots are x = --------------------- =
2
This is Answer A.
Find the square roots of 169. Then find 169 squared
Answer:
1. 13
2. 28561
Step-by-step explanation:
Answer:
The other guy said both but i know that the square root of 169 is 13!
Step-by-step explanation:
Brainlist?
Hope this helps!
Find the value of x.
8 20 36
Answer:
4.4
Step-by-step explanation:
do a ratio, so 8:36 = x:20
36/8=4.5
4.5x=20
x=4.4
Arya has 5 cupcakes and wants to
share them with 8 friends equally.
How many cupcakes will each frien
receive?
Each friend of Arya will receive 0.625 cupcakes.
To divide 5 cupcakes equally among 8 friends, we can use simple division. We would divide the total number of cupcakes (5) by the total number of friends (8) to find the number of cupcakes each friend would receive. In this case, 5 divided by 8 is equal to 0.625. This means that each friend will receive 0.625 cupcakes. However, since cupcakes are not divisible it is not possible to divide 5 cupcakes equally among 8 friends. In this case, either Arya will have to make more cupcakes or they will have to decide on a different way to divide the cupcakes.
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$14.40 for 4.5 pounds of beef
Answer:
One pound of beef is $3.2
Step-by-step explanation:
14.40 / 4.5
= 3.2
CHECK:
3.2 * 4.5
=14.40
Answer:
Step-by-step explanation:
The unit rate for this beef is:
$14.40
---------- = $3.20/lb
4.5 lb
Bess and Carolina and their 14 classmates write their names on cards. The teacher, Miss Scott, picks two cards without replacing the first card. What is the probability that Bess is chosen first and Carolina is chosen second?
Answer:
Step-by-step explanation:
wave hits an object as shown.
A vertical line with Medium 1 to the left and Medium 2 to the right. An arrow from the left reaches the line. An arrow starts from the same point on the line and goes right at a different angle.
Which kind of wave interaction is shown?
absorption
diffraction
refraction
reflection
Answer:
Refraction
Step-by-step explanation:
Since the line bends (and this can apply to light too), the line refracts, or changes the angle of direction.
Answer:
absorption
diffraction
refraction
reflection
Step-by-step explanation:
A standard six-sided die is rolled, and P is the product of the five numbers that are visible. What is the largest number that is certain to divide P?
A. 6 B. 12 C. 24 D.14 E.720
The largest number which certain to divide P is 12. The correct option is B.
The product of all six numbers of the six-sided die is 6! = 720.
The products of numbers which can be visible are:
720 / 1, 720 / 2, …, 720 / 6.
In this case, the answer is the largest common divisor, that is:
720 / L
where L = the least common multiple of {1,2,3,4,5,6}.
So, it is clear that L = 60.
Thus, the answer is:
= 720 / L
= 720 / 6
= 12
Hence, the largest number which certain to divide P is 12, it is option B.
What is the largest number in the world?A Googolplex is studied to be the largest number in the world. It is stated as 10^googol. The number 10^googol can also be written in the exponential format which will equal 10^10^100. When writing the number googol in normal number writing format, the probability of losing count is very high. Thus, it is more convenient to write it in the form of exponent and powers.
The number googolplex is so extremely large which is unimaginable to be expressed in number writing format. Hence, the number remains a concept as it is of no use in mathematics for basic calculations.
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Darius started his baseball card collection with 7 cards that he got from his dad. He bought 1 pack of cards each month for 20 years. After 1 year he had 79 cards in his collection. Darius gave his entire collection to his son 20 years after he got it from his dad. Which of the following is the domain of the function representing the number of baseball cards in Darius’s collection?
A. 7< or = x< or = 1,580
B.7< or = x< or = 1,447
C.0< or = x
D.0< or = x< or = 20
Answer:
b
Step-by-step explanation:
-2 1/3 - (-5) = ? can someone please help me ty!
Answer: 8/3
Step-by-step explanation:
Answer: I THINK ITS THE SENCOND ONE
Step-by-step explanation:
What is the product of 3.7 x 10^3 and 1.4 x 10^6 expressed in scientific notation?
Answer:
[tex]5.18 *10^{9}[/tex]
Step-by-step explanation:
3.7 * 1.4 = 5.18
[tex]10^{6} *10^{3} = 10^{9}[/tex]
Answer:
3.7 x 10^3 and 1.4 x 10^6 = 1403700 = 1.4037 × 10^6
Step-by-step explanation:
= 1.4037 × 10^6
(scientific notation)
= 1.4037e6
(scientific e notation)
= 1.4037 × 10^6
(engineering notation)
(million; prefix mega- (M))
= 1403700
(real number
Anybody can help me with this ?
Answer:
Because f(x)=y, begin by changing f(x) to the y-value, getting y=2x-4. Because we are determining the inverse of the equation, this means that the x and y-value should be switched, getting x=2y-4. Now that we're trying to isolate y, move 4 to the other side to get x+4=2y. Divide by 2 on both sides to get y=[tex]\frac{1}{2}[/tex]x+2. Now, we substitute y for f(x), but this time we put [tex]f^{-1}[/tex](x), because it's the inverse of f(x).
Here are the steps in order:
y=2x-4
x=2y-4
x+4=2y
x/2+4/2=2y/2
y=1/2x+2
f^-1(x)=1/2x+2
Priya has planted a garden shaped like a right triangle. One leg of the triangle is 5 meters long, and the triangle formed by it and the hypotenuse is 50 grades. If Priya wants to build a fence around her garden, how many meters of fence will she need?
Answer:
Perpendicular = 6 meter (Approx.)
Length of fence required = 18.81 meter
Step-by-step explanation:
Given:
One side of triangle = 5 m
Angle with side and hypotenuse = 50°
Find:
Other sides
Length of fence required
Computation:
Using trigonometry function;
Tanθ = Perpendicular / Base
For 50° angle , 5 m is base
Tan 50 = Perpendicular / 5
1.1917 = Perpendicular / 5
Perpendicular = 5.9585
Perpendicular = 6 meter (Approx.)
Hypotenuse = √Perpendicular² + Base²
Hypotenuse = √6² + 5²
Hypotenuse = √36 + 25
Hypotenuse = √61
Hypotenuse = 7.81 meter (Approx.)
Length of fence required = 5 + 6 + 7.81
Length of fence required = 18.81 meter
if the minimum charge of 175 calls is Rs 180 and Rs 1.50 per calls for additional calls then find the cost of calls including the charge of TSC 10% and VAT 13% as the former reading the total calls a land line phone is 5577 and the present reading 7577.Also,find the amount of payment including 20% fine
The total amount of payment for calls is Rs 648
How to find the total amount for paymentFrom the problem, the following information is deduced to help solve the problem
the minimum charge of 175 calls is Rs 180 and Rs 1.50 per calls for additional calls
The total call reading
= present reading - former reading
= 7577 - 5577
= 2000
the number of 175 calls in 2000
= 2000 / 175
= 11 3/7 approximately 12
Total cost of calls
175 calls = Rs 180 + Rs 1.50 * 12
= 180 + 1.50 * 12
= Rs 180
Adding other charges to Rs 180
= 180 * 1.1 + 180 * 1.3 + 180 * 1.2
= Rs 648
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2x³ + 4x = 3
has a solution between 0 and 1
PLEASE HELP!! I will give brainliest!! New update because the last one had gore posted in it. Please report it is you see that, I’m so sorry.
Drag the key features to the correct location on the image.
Each key feature can be used more than once, but not all key features will be used.
Which key features are present in these three functions?
Answer:
Step-by-step explanation:
hope this helps
I need help pls answer ASAP
The value of x in the triangle WXY is 19 degrees
What is an equation?An equation shows how two or more numbers and variables are related to each other.
How to determine the value of xFrom the question, we have the following parameters that can be used in our computation:
The triangle XYZ and the line YZ such that lie YZ and XW are parallel lines
Using the above as a guide, we have the following:
∠ZYW = ∠XWY (alternate angles are equal)
∠XWY = 2x (Given)
So, we have
∠XWY + ∠XYW + ∠YXW = 180° (the sum of angles in a triangle)
Substitute the known values in the above equation, so, we have the following representation
2x + (3x - 5) + 90 = 180
Open the brackets and solve
5x - 5 = 90
Evaluate the like terms
5x = 95
Divide both sides by 5
x = 19°
Hence, the value of x is 19°
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Mo played 30 games of chess. He won 18 of these games. (b) He played 20 more games. He had then won 64% of all of his games. How many of the 20 games did he win?
Answer:
14
Step-by-step explanation:
First of all he played a total of 50 games which he won 32 of due to 64% of 50 being 32 then you subtract the 18 games he won at the start to get 32-18=14
would be amazing if you marked this as brainliest
Answer:
Total no of games played =50
percentage of the win game=64%
total no of won games =64/100×50
=32
no of games he won of the 20 =32-18
=14
so he won 14 games from 20
hope it helps
Ryan has 1/2 pound of chocolate. He divides it into 4 equal portions. Write the amount of chocolate, in pounds, in each portion
Answer:
1/8
Step-by-step explanation:
Ryan has 1/2 pound of chocolate
He divided into 4 portions
Therefore the amount each of them will get can be calculated as follows
1/2 ÷ 4
= 1/2 × 1/4
= 1/8
Hence each portion Is 1/8
What type of angles are these???
Answer:
Alternate exterior
Step-by-step explanation:
1 and 11 are on different sides which makes them alternate and they are both on the outside
Four expressions are show below. Which expressions would give the same answer? Select TWO that apply?* Expression A: -2.43 + 1.57 Expression B: -2.43 -1.57 Expression C:-2.43 + (-1.57) Expression D: -2.43 - (-1.57) A and B A and C A and D Band C Band D C and D
Answer:
A. 2.43 kg x 1000 g/1 kg
Step-by-step explanation:
i dont really know how to explain it
but yea its A
Answer:
Same as the other person, cant explain much, im a horrible explainer, even if i did explain it would be false
Step-by-step explanation:
Its A
What is the measure of W the parallelogram shown?
32°
O A. 155°
O B. 32°
O C. 58°
O D. 148°
Answer:
148 degrees
Step-by-step explanation:
For a parallelogram, angles on the same side sum up to be 180
what this simply means is that they are supplementary
Mathematically, we have it that;
X + W = 180
W = 180 - X
W = 180 -32
W = 148 degree
What is parallel lines Class 7?
Parallel lines are those lines that lie in the same plane and never intersect each other. They are equidistant from each other at every point and have the same slope.
Two lines are stated to be parallel when they do not meet at any point in a plane. This means that lines which do not have a common intersection point and never cross paths with each other are parallel to each other. The symbol used for representing parallel lines is ‘||’.
Two parallel lines are represented as:
AB║CD
That is line AB is parallel to CD.
The perpendicular length between the two parallel lines is always constant.
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According to your graphing calculator what is the approximate solution to the trigonometric inequality tan(x/4)<1/5 over the interval 0<= x<=2pi radians 
0<=x<0.7896
0<=x<0.9799
0<=x<0.9870
0<=x<1.2249
The graph of tan(x/4) < 1/5 over the interval 0<= x<=2pi radians is attached. An approximate solution to the trigonometric inequality tan(x/4)<1/5 over the interval 0<= x<=2pi radians is 0 <= x < 0.7896.
y = 1/5 is a horizontal straight line parallel to x-axis.
Plot of tan(x/4)<1/5 over the interval 0<= x<=2pi radians is attached. The shaded region is the solution.
tan(x/4) < 1/5
Taking tan inverse on both sides
tan⁻¹(tan(x/4)) < tan⁻¹(1/5)
x/ 4 < tan⁻¹(1/5)
Multiplying by 4 on both sides
x < 4tan⁻¹(1/5)
x < 0.7896
Applying the limits of intervals
0 <= x <= 2pi ≈ 6.28
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The table below shows information about how many fans there were at two
football matches in a local tournament.
What is the difference between the number of away fans at the semi-final and at
the final?
Semi-final
Final
Total number of fans
250
400
Ratio of home fans
to away fans
6:4
7:3
The fans at the semi final is less than the fans at the final .
What is the away goal rule in FIFA?The implementation of the away goals rule makes any goals scored away from home effectively count twice when the scores are tied, as is customary in matches with home and away legs, such as the knockout stage of the Champions League.
In the UCL, do away goals still count?Champions League and Europa League, two of its premier club championships, starting in the 2021–22 season.
Semi final : 250*4/6+4 = 100
Final : 400*3/7+3= 120
Hence, The fans at the semi final is less than the fans at the final .
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need help quickly
The polygons are similar. x = ___ Write your answer as a decimal
Answer:0.23
Step-by-step explanation:
Q
R
S
T
U
0
What can we say about V?
Choose all answers that apply:
A
V=U
B В
V = -(-V)
V is the opposite
Answer:
v= -(-v)
Step-by-step explanation:
Find the Surface Area of the figure below
Answer:
132 [tex]cm^{2}[/tex]
Step-by-step explanation:
Triangle formula is 1/2 bh (4x3/2) is 6 (4 triangles)=24
Base is 6x8=48
sides are 6x5=30 then multiply by 2 of the sides =60
add all together
can someone help me with this :/
solve using the quadratic formula: x=(-b +/-sqr(b^2 - 4ac)/(2a)
2x² + x - 1 = 0
answers in (pic)
Answer:
2x² + x - 1 = 0
a= 2 b= 1 c= -1
x = [ -b +- sqr rt( b^2 -4ac) ] / 2*a
x = -1 +- sqr rt (1 - 4 *2*-1) / 4
x1 = [ -1 + (sqr rt (1 +8)) / 4
x1 = ( -1 + sqr rt (9)) / 4
x1 = (-1 + 3) / 4
x1 = .5
x2 = (-1 -3) / 4
x2 = -4 / 4
x2 = -1
And to check that answer: http://www.1728.org/quadratc.htm
Step-by-step explanation:
What is −30y − 15 if y is 7?
Answer:
-225
Step-by-step explanation:
-30*7=-210
-210-15=-225
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