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AURORKA [14]
3 years ago
12

What is the value of y when x = 4? y=15x+7

Mathematics
1 answer:
Nana76 [90]3 years ago
3 0

Answer: Y= 67

Step-by-step explanation:

The equation says;

Y= 15x + 7

When x=4

We have Y= 15(4)+7 by substituting the value of x for the equation. So, we have

Y=60+7

Y= 67

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Will mark brainliest!! solve & simplify the following equation: 2x²-7x=4​
Goryan [66]

Answer:

x=  −1 /2   or x=4

Step-by-step explanation:

This is ALGEBRA, equations, factoring and zero property. ok.. let's solve this step-by-step

2x^2−7x=4

<u>Step 1: Subtract 4 from both sides. </u>

2x^2−7x<u>−4 </u>=4 <u>−4 </u>

2x^2−7x−4=0

<u>Step 2: Factor left side of equation. </u>

(2x+1)(x−4)=0

<u>Step 3: Set factors equal to 0. </u>

2x+1=0 or x−4=0

x=  −1 /2   or x=4

(BTW, there are supposed to be two answers, it's factoring)

Sorry if the format is not clear, but I hope this helped (really feel you, algebra can be brain-striking)!! Please leave a comment, rating and/or mark as the brainliest-whichever you think I deserve! Thank You :)

4 0
3 years ago
The owner of a small store buys coats for ​$45.00 each. Answer parts a and b. a. He sells the coats for ​$63.00 each. What perce
irga5000 [103]

Answer:

The purchase price is 71.4% of the sale price.

Step-by-step explanation:

1) 45 / 63 = 0.714

2) 0.714 * 100 = 71.4%

I didn't see part B.

7 0
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Please help me find the correct answer to this!
WARRIOR [948]

Answer:

D) x=-1, x=-9

Step-by-step explanation:

x=-1, x=-9

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Answer:

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Step-by-step explanation:

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1) 180 square cm

Answer:

2) 41 cubic cm

Step-by-step explanation:

1)

Area of pool = 12 * 15 = 180 square cm

2) Volume of water = 1/3 * Volume of pool

= 1/3 *123

= 41 cubic cm

8 0
2 years ago
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