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marissa [1.9K]
3 years ago
10

Tell me if this is correct?

Mathematics
1 answer:
Rina8888 [55]3 years ago
6 0

Answer:

Divided into five equal parts

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Johanna wrote the system of equations. 4 x - 3 y = 1, 5 x + 4 y = 9. If the second equation is multiplied by 4, what should the
polet [3.4K]

Answer:

The first equation must be multiplied by -5 to eliminate x variable by addition

Step-by-step explanation:

4 x - 3 y = 1 (1)

5 x + 4 y = 9 (2)

If the second equation is multiplied by 4

5x+4y=9. ×4

We have,

20x+16y=36 (3)

The first equation should be multiplied by -5 to eliminate x variable by addition

4x-3y=1 × -5

We have

-20x+15y=-5 (4)

Add equation (3) and (4) to eliminate x variable

20x+16y=36

-20x+15y=-5

31y=31

Divide both sides by 31

y=1

Substitute y=1 into equation (1)

4 x - 3 y = 1

4x-3(1)=1

4x-3=1

4x=1+3

4x=4

Divide both sides by 4

x=1

4 0
3 years ago
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The perimeter of a rectangular painting is 326 cm. if the width of the painting is 74 cm, what is the length?
True [87]
Perimeter (P) = 326 cm

Width (w) = 74 cm

Length (l) = ?

We know,

P = 2* (l + w)

326 = 2 (l + 74)

l + 74 = 163

l = 89 

Hence, length is 89 cm.
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How many tens are in 20,000 pounds??
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Your answer to this is 200

8 0
3 years ago
Find the earnings for giving a haircut to m men and w women. Justify your answer
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3 years ago
The circumference of a circle is 15π units. How many units long is its diameter? (Use only the digits 0 - 9 and the decimal poin
Lyrx [107]

Answer:

c

Step-by-step explanation:

4 0
2 years ago
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