Which of the following is a whole integer and rational number? A) 2.6 B). -79 C.) 5/8 D)46

1 answer:

5 0

Hi! The answer would be D. It is basically just asking for a whole number. 2.6 is a decimal, C is negative and a decimal. Hope this helped!

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Alina [70]

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7 0

2 years ago

If an object is dropped from a height of 178 feet, the function h(t)=-16t^2+178 gives the height of the object after t seconds.

svp [43]

Answer:

B. 3.34s

Step-by-step explanation:

Find t when the object hit the ground, h(t)=0.

h(t)=-16t²+178

0=-16t²+178

16t²=178

t²=11.125

t=√11.125=3.33541601603s

4 0

2 years ago

What is the value of x in the equation 3x-5=-18?<br> -56<br> 52<br> 56

anygoal [31]

I’ll teach you how to solve 3x-5=-18
—————————————-
3x-5=-18
Move constant to the right-hand side and change its sign:
3x=-18+5
Calculate the sum:
3x=-13
Divide both sides of the equation by 3:
X=-13/3
Your Answer Is x=-13/3
Plz mark me as brainliest if this helped :)

8 0

2 years ago

Billy's age is twice Joe's age and the sum of their ages is 45. How old is Billy?

Fed [463]

Answer:

30 years old

Step-by-step explanation:

Joe's age can be set to x. Since Billy is twice as old as Joe, his age can be set to 2x. They add up to 45. You can set up an equation, 2x+x=45.

Simplify the equation.

3x=45, x=15

Joe is 15. Billy is 2(15)=30.

4 0

2 years ago

1,78 scientific notation

pychu [463]

The answer is 7.8 x 10^4

6 0

3 years ago