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sweet [91]
3 years ago
9

Last summer, Betty earned $4200 by painting houses. She invested

Mathematics
1 answer:
Musya8 [376]3 years ago
3 0

x*(1.035) + (4,200-x)*(1.045) = 4,374.00

1.035x + 4,389.00 -1.045x = 4,374.00

15.00  = .01x

x = 1,500  so x (1,500) invested at 3.5% and  

(4,200 - 1,500) (or 2,700) invested at 4.5%

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A rectangle has a perimeter of 58. The width is 7 less than the length. Find the length
Marianna [84]

Answer:

Length = 18 Width = 11

Step-by-step explanation:

Perimeter = 2(length) + 2(width)

So let's label the unknown length as x. Width would then be (x-7). Then plug it into the perimeter equation.

2(x) + 2(x-7) = 58

Then use PEMDAS which will give us

2x+2x-14 = 58

Combine like terms

4x -14 = 58

Add 14 to both sides

4x = 72

To get x by itself you have to divide both sides by 4.

x = 18

So length is 18 and width is (18-7) which is 11.

6 0
2 years ago
Write the phrase as an expression<br> the quotient of 22 and a number a
RideAnS [48]
I believe the Answer is a/22 ( that’s a fraction )
5 0
3 years ago
A theater has 40 seats in the first row, 43 seats in the second row, 46 seats in the third row, and so on. How many seats are th
iris [78.8K]
94 seats

There are 2 ways to do this one: 

1. 18 x 3 = 54
54 + 40 = 94

2. 40 + 3 + 3 + 3.... and so on. 



Let me know if this was helpful! 
4 0
3 years ago
Read 2 more answers
Giving brainliest and thanks for best answer
tekilochka [14]
B ***********************************************
6 0
3 years ago
Read 2 more answers
Anyone think they could help me with this question???
Slav-nsk [51]

Answer:

61

Step-by-step explanation:

As we can see the triangles are congruent so

< F = < C ( being corresponding angles of congruent triangle)

< C = 29

Now

<A +<B + <C = 180° { being sum of angles of triangle }

5x + 1 + 90 + 29 = 180°

5x = 180° - 120°

5x = 60°

x = 12°

<A = 5 * 12° + 1 = 61°

Hope it will help :)

3 0
3 years ago
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