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Georgia [21]
3 years ago
13

What is the value of y in the equation 5x + 2y = 20, when x = 0.3?

Mathematics
2 answers:
Sauron [17]3 years ago
8 0
5x+2y=20 when x=3/10 is:

5(3/10)+2y=20

15/10+2y=20

1.5+2y=20

2y=18.5

y=9.25
aleksley [76]3 years ago
6 0
5x+2y=20
5(0.3)+2y=20
1.5+2y=20
2y=18.5
y=9.25
Hope This Helps and God Bless!
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At a dance camp, students must specialize in one style of dance. Of the 62 dancers at the
kicyunya [14]

Answer:

10/31

or

0.32

or

32%

Step-by-step explanation:

Students must specialize in one style of dance.

Last summer there was 62 dancers.

20 of the 62 specialized in modern dance.

Therefore the probability of a random chosen dancer to be a modern specification is 20/62.

The answer is:

Fraction:

10

---

31

Whole number:

0.32

Percent:

32%

7 0
3 years ago
Can someone help me with this please
stellarik [79]

Ok so we'll  go ahead and solve for y first -  we just need to get it alone on one side of the equal sign

Step 1: subtract 2x from each side

2x - 7y - 2x = 19 - 2x

This cancels out the 2x on the left, giving us

-7y = 19 - 2x

Step 2: divide both sides by -7

\frac{-7y}{-7} = \frac{19}{-7} + \frac{-2x}{-7}

This gives us

y = -19/7 + 2x/7

That should be your answer for the first question. Now solving the next parts are easy. All you need to do is plug in x.

When x = -3

y = -19/7 + 2x/7

y = -19/7 + 2(-3)/7

y = -19/7 - 6/7

y = -25/7


When x = 0

y = -19/7 + 2x/7

y = -19/7 + 2(0)/7

y = -19/7


When x = 3

y = -19/7 + 2x/7

y = -19/7 + 2(3)/7

y = -19/7 + 6/7

y = -13/7


Hope that helps! Feel free to ask if I can help with anything else :)

7 0
3 years ago
You have $600,000 saved for retirement. Your account earns 5.5% interest. How much, to the nearest dollar, will you be able to p
Nat2105 [25]

9514 1404 393

Answer:

  $4127

Step-by-step explanation:

The amortization formula is good for finding this value.

  A = P(r/12)/(1 -(1 +r/12)^(-12t))

where P is the amount invested at rate r for t years.

  A = $600,000(0.055/12)/(1 -(1 +0.055/12)^(-12·20)) = $4127.32

You will be able to withdraw $4127 monthly for 20 years.

3 0
3 years ago
If Breanna drives a constant speed for 3 hours and travels 180 miles, what is her speed a mile per hour
Georgia [21]

Answer:

60 mph

Step-by-step explanation:

You divide 180 by 3 to get 60 mph

3 0
3 years ago
If 5 miles is 8 kilometers, which of the following is correct? A. 47.5 miles is 76 kilometers B. 52.5 miles is 86 kilometers C.
RUDIKE [14]

Answer:

A.47.5 miles is 76

Step-by-step explanation:

in real life its like 76.44, but im rounding

4 0
3 years ago
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