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zheka24 [161]
3 years ago
8

What is y= -2/5x-2 y=-4

Mathematics
1 answer:
MaRussiya [10]3 years ago
3 0

Answer:

y=−4 and x=5

Step-by-step explanation:

y=−4;y=(

(−2)

5

)(x)−2

Step: Solvey=−4for y:

Step: Substitute−4foryiny=

−2

5

x−2:

y=

−2

5

x−2

−4=

−2

5

x−2

−4+

2

5

x=

−2

5

x−2+

2

5

x(Add 2/5x to both sides)

2

5

x−4=−2

2

5

x−4+4=−2+4(Add 4 to both sides)

2

5

x=2

2

5

x

2

5

=

2

2

5

(Divide both sides by 2/5)

x=5

Answer:

y=−4 and x=5

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The volume of a volleyball is about 288 cubic inches. what is the radius of the volleyball, to the nearest tenth of an inch? use
Len [333]

Answer:

The radius of the volleyball is 8.3 inches

Step-by-step explanation:

Given

r = \sqrt{\frac{3v}{4\pi}}

v = 288

Required

Determine the value of r

To do this, we simply substitute 288 for v and 3.14 for π in the given equation.

This gives

r = \sqrt{\frac{3v}{4\pi}}

r = \sqrt{\frac{3 * 288}{4 * 3.14}}

r = \sqrt{\frac{864}{12.56}}

r = \sqrt{68.7898089172}

r = 8.29396219651

r = 8.3\ inch (Approximated)

Hence;

<em>The radius of the volleyball is 8.3 inches</em>

3 0
3 years ago
Read 2 more answers
Solve for x: (2/5)(x-4)=2x​
NARA [144]

Simplify brackets

2/5(x - 4) = 2x

Simplify 2/5(x - 4) to 2(x - 4)/5

2(x - 4)/5 = 2x

Multiply both sides by 5

2(x - 4) = 10x

Divide both sides by 2

x - 4 = 5x

Subtract x from both sides

-4 = 5x - x

Simplify 5x - x to 4x

-4 = 4x

Divide both sides by 4

-1 = x

Switch sides

<u>x = -1</u>

8 0
3 years ago
How do I find the answer for 1/2 of 3/5
Tems11 [23]
The answer is 0.3. To find this answer, <span>1/2 / 3/5 = <span>56</span> ≅ 0.8333333</span>
7 0
4 years ago
Can somebody please help (no websites)
const2013 [10]

Answer:

x   y

0  .75

3  3.75

9  9.75

Step-by-step explanation:

You add .75 to whatever number x equals, to get y.

Hope that this helps!

4 0
3 years ago
Hassan and Dionnie played a game of darts, and Dionnie scored 4 more points than Hassan. The total of their scores was 180. How
Varvara68 [4.7K]

Answer:

Let Hassan score be X

Then Dionnie score will be  X + 4

: the sum of Hassan and Dionnie is 180

X + ( X + 4 ) = 180

X + X + 4 = 180

COLLECTING LIKE TERMS

2X = 180 – 4

2X = 176

DIVIDING EACH TERM BY 2

2X/2 = 176/2

X = 88

: Hassan scored 88 and Dionnie score 92

Step-by-step explanation:

6 0
3 years ago
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