All categories

3 years ago

If y varies directly as x2 and y = 144 when x = 4, what is the value of y when x = -5?

1 answer:

muminat3 years ago

6 0

Y varies with x² times a constant. We will call the constant a
144=ax²
144 = a(4²)
144 = 16a
a = 9
Apply our equation y = 9x²
y = 9(-5)²
y = 9* 25
y=225
Answer is B

You might be interested in

2. The quotient of a number and -9 increased by 10 is 11.

MrMuchimi

Answer:

Step-by-step explanation:

This question isn't worded the greatest, there are two ways you can read this.

1. The quotient of a number and -9, increased by 10, is 11

2. The quotient of a number, and -9 increased by 10, is 11

The first equation will look like this

$\frac{x}{-9} +10 = 11$

And the second will look like this

$\frac{x}{-9+10} = -11$

So I have solved for both (I personally believe the second way of reading the question is the correct way)

7 0

2 years ago

А 5. Protein Bar A has 15 grams of protein in

coldgirl [10]

The answer is Protein Bar A

6 0

2 years ago

While standing on a highway overpass, Jennifer wonders what proportion of the vehicles that pass on the highway below are trucks

Assoli18 [71]

Answer:Obtain a systematic sample by selecting every 20th vehicle that passes (in any lane and going in any direction).

Step-by-step explanation:

8 0

3 years ago

The sum of an a.p is 340. the first term is 7 and the common difference is 6. Cal the number of terms in the sequence.

damaskus [11]

Common difference: 6

First term: 7

Second term: 13

Third term: 19

Fourth term: 25

Fifth term: 31

I hope this is correct and helps!

6 0

2 years ago

Read 2 more answers

0.8 is it at rational number <br> ___<br> 2

Alina [70]

Answer:

0.8 is an ineteger of two values so YES it is a RATIONAL number

Step-by-step explanation:

I hope this helped and if it did I would appreciate it if you marked me Brainliest. thank you and have a nice day!

5 0

2 years ago

Read 2 more answers