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Ulleksa [173]
3 years ago
11

Determine whether y varies directly with x. If so, find the constant of variation k. –5y = 5x + 10 a. yes;1 b. no c. yes; –5 d.

yes; 5
Mathematics
1 answer:
brilliants [131]3 years ago
7 0
A          -5-10=5/5=1     x =1  iiiiiiiiiiiiiiiiiiiiiiiiiii
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One Step Equations<br> solve for x <br><br> 2.4+x=9.8
Simora [160]

Answer:

x=7.4

Step-by-step explanation:

2.4+x=9.8

(x=9.8-2.4)

x=7.4

7 0
3 years ago
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Prove the polynomial identity. (2x−1)2+2(2x−1)=(2x+1)(2x−1) Drag and drop the expressions to correctly complete the proof of the
Alex_Xolod [135]

Answer:

Step-by-step explanation:

Given expression is,

(2x - 1)² + 2(2x - 1) = (2x - 1)(2x + 1)

To prove this identity we will take the left hand side of the equation and will prove equal to the right side.

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4x² - 4x + 1 + 4x - 2 = (2x - 1)(2x + 1)

4x² - 1 = (2x - 1)(2x + 1)

(2x - 1)(2x + 1) = (2x - 1)(2x + 1) [Since a² - b² = (a - b)(a + b)]

6 0
4 years ago
George weighs 60 pounds less than his older brother. Together they weigh 240 pounds. How many pounds does George weigh?
lyudmila [28]

Easy Algebra question!

Let's use "x" as a variable.

The equation would be x+x+60 = 240 with "x" being George's weight.

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From there you divide both sides by 2, getting x=90.

"x" is George's weight, so he weighs 90 pounds.

ANSWER: 90 POUNDS

7 0
3 years ago
Sarah's family has an apple orchard The family sells 8 baskets of apples for every 3 jars of applesauce. How many baskets of app
Lina20 [59]
They would sell 320 baskets if they sold 120 jars of apple sauce.  They sell 440 total baskets and jars. You have it right.
4 0
3 years ago
The wheels on a car have a diameter of 28 inches. How many full revolutions will the wheels need to make to travel 200 feet?
kramer

Answer:

8 revolutions

Step-by-step explanation:

8 x 28 = 224

5 0
3 years ago
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