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kicyunya [14]
3 years ago
6

4x+5=21 What’s the answer

Mathematics
1 answer:
ioda3 years ago
5 0

Answer:

X=4

Step-by-step explanation:

Subtract 5 from both sides and you get 4x=16. Divide both sides by 4 and you get x=4

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The formula for the volume of a pyramid is
Pepsi [2]

Answer:

h = 3v/b

Step-by-step explanation:

Here, we want to select the equation that solves for h

What this simply means is that we should make h the subject of the formula

Thus, we have 3 * v = bh

3v = bh

h = 3v/b

7 0
3 years ago
A ball is thrown from the top row of seats in a stadium. The function h(t) = - 16t^2 + 80t + 96 gives the height, in feet, of th
Rudik [331]

Answer:

2s or 3s

Step-by-step explanation:

Given the function that models the height of the object as;

h(t) = - 16t^2 + 80t + 96

The ball reaches the ground when h = 0

Substitute

0 = - 16t^2 + 80t + 96

Divide through by -16

0 = t²-5t-6

t²-5t-6 = 0

t²-2t-3t+6 = 0

t(t-2)-3(t-2) = 0

(tt-2)(t-3) = 0

t - 2 = 0 and t-3 = 0

t = 2 and 3s

Hence it will take the ball 2s or 3s to reach the ground

7 0
3 years ago
About 16.6% of Americans can speak Spanish. We obtain a random sample of seventy-five Americans and determine the proportion in
egoroff_w [7]

Answer:

The probability that 25% or more in the sample speak Spanish is 76%.

Step-by-step explanation:

Sample of 75 Americans

If 25% or more in the sample speak Spanish, it can be deduced that 24% do not speak Spanish.

The proportion of those who do not speak Spanish is 18 (24% of 75)

Therefore, the proportion of those who speak Spanish is 57 (75 - 19)

This implies that 57/75 x 100 = 76% of the sample speak Spanish.

This 76% of the sample who speak Spanish is equal to the 25% or more who do speak Spanish in the sample.

Probability is the chance that an event may occur from many other events that could have occurred.  It is an educated guess or estimate of something or one event happening when all the events in the set are given an equal chance.

6 0
3 years ago
Can someone graph this equation? 5x-5=5x+2
dem82 [27]
Start by simplifying the equation
5x-5x=2+5
0=7
That means y=7, which means there is a slope of 0
See the picture
Hope this helps

5 0
4 years ago
Alisha has a $15,000 car loan with a 6 percent interest rate that is compounded annually. How much will she have paid at the end
Harlamova29_29 [7]
6 percent intrest per year for 5 years I think is the same as 30 percent for 5 years
so $15,000 x .3 is $4500
$15,000 + $4500 = $19,500
not 100 percent sure if this is correct but I think its right. 
Sorry if I am wrong not 100% sure.

8 0
3 years ago
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