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Mekhanik [1.2K]
3 years ago
11

Which expressions are equivalent to 76(3 + c)?​

Mathematics
2 answers:
dimaraw [331]3 years ago
6 0

Answer:

76c + 228

Step-by-step explanation:

Use the distributive property

76 × 3 = 228

76 × c = 76c

76c + 228

irakobra [83]3 years ago
6 0

Answer:

76c + 228

Step-by-step explanation:

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If an object is dropped from a height of 144 feet, the function h(t)=-16t^2+144 gives the height of the object after t seconds.
shtirl [24]

Answer:

A. 3s

Step-by-step explanation:

The height of the object after t seconds is given by:

h(t) = -16t^2 + 144

When will the object hit the ground?

It hits the ground after t seconds, and t is found when h(t) = 0. So

h(t) = -16t^2 + 144

0 = -16t^2 + 144

16t^2 = 144

t^2 = \frac{144}{16}

t^2 = 9

t = \sqrt{9}

t = 3

3 seconds, so the correct answer is given by option a.

5 0
2 years ago
Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.
ycow [4]

This  involves quite a lot of arithmetic to do manually.

The first thing you do is to make the first number in  row 2  = to 0.

This is done by R2 = -3/2 R1 + R2

so the matrix becomes

( 2        1          1)    ( -3 )

( 0    -13/2   3/2)   (1/2 )

(5       -1           2)  (-2)

Next step is to make  the 5 in row 5  = 0  

then  the -1  must become zero

You aim  for the form

( 1 0 0) (x)

(0 1 0) (y)

(0 0 1) ( z)

x , y and z will be the required solutions.


4 0
3 years ago
Read 2 more answers
In a survey of 702 students, 2/3 liked rock music. How many students liked rock music?
MissTica

Answer:

468

Step-by-step explanation:

702 divided by 3 times 2

4 0
3 years ago
Based on the side lengths given (a, b, and c), which triangles are right triangles?
Mekhanik [1.2K]

Answer:

B & C

Step-by-step explanation:

Use the Pythagorean Theorem:   a^2 + b^2 = c^2

A) 18^2 + 24^2 = 2,088   |   42^2 = 1,764     [NOT A]

B) 33^2 +56^2 = 4,225   |   65^2 = 4,225     [B IS CORRECT]

C) 19^2 + 180^2 = (32,761) = 181^2 = (32,761)     [C IS CORRECT]

D) 3^2 + 4^2 = 25  |   7^2 = 49     [NOT D]

I hope this helped you ! In return, please deem this the most brainliest answer.

7 0
3 years ago
A braid was bought to put around a blanket that measures 23 inches by 24 inches. At $0.60 per yard how much was paid for the bra
mojhsa [17]
To do this you need 94 inches of braid. 

94 inches =  ? yards

1 inch = 0.0277778 yard

94 × 0.0277778 =  <span>2.6111132.

Since you can only pay for a full yard you would buy 3 yards which would cost:- 

$0.60 </span>× 3 = $1.80.

So for this you would need 3 yards which would cost $1.80. 

Hope I helped:P
5 0
3 years ago
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