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3 years ago

Solve for w. 9 + 7w - 9 = 5w – 10 =

Mathematics

1 answer:

777dan777 [17]3 years ago

8 0

Answer:

w = -5

Step-by-step explanation:

Hello there!

9+7w-9=5w-10

Add 9 and -9 since we can add those

7w=5w-10

Use subtraction Prop of Equality (combining/simplifying like terms)

2w = -10

Now isolate the w by dividing 2w by 2 and use the division prop of equality

w = -5

Hope this helps. Feel free to comment for further explanation.

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Sasha buys two ribbons of equal length. She cuts 9 pieces of the same length, L, from the first ribbon and finds that 5 inches a

nikitadnepr [17]

Answer:

50 inches.

Step-by-step explanation:

Let the length of the each ribbon was x.

Now, she cuts 9 pieces of same length L which means total length is 9L.

Now, doing the same she was left with 5 inches of ribbon. Hence, we have

[tex[9L+5=x.....(1)[/tex]

Similarly, we can write a equation for the second situation.

$2L+40=x......(2)$

From equation 1 and 2,

$9L+5=2L+40\\\\7L=35\\\\L=5$

Plugging this value in equation 1,

$9(5)+5=x\\\\x=45+5\\x=50$

Therefore, the length of each ribbon when she bought them was 50 inches.

3 0

4 years ago

I need help on this one asap pliz

Doss [256]

$C(5,4)(.40)^4(1-.40)^1=5(.4)^4(.6)^1=0.0768$

That's 7.68% = 7.7% (rounded)

Note: C(5, 4) is the number of combinations of 5 things taken 4 at a time. You may have seen this written as $_5C_4$

In general, $C(n,r)=\frac{n!}{r!(n-r)!}$

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3 years ago

How to find domain and range of a parabola?

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The domain is the value of x, the range is the value of y.
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3 years ago

Triangle DEF has vertices D(0,4), E(10,4), and F(5,9) Prove that the triangle is isosceles and a right triangle.

LUCKY_DIMON [66]

Answer:

darling, could you send a picture of the problem?

Step-by-step explanation:

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3 years ago

Solve for w. 9 + 7w - 9 = 5w – 10 =​

Solve for w. 9 + 7w - 9 = 5w – 10 =