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Rom4ik [11]
2 years ago
7

Can someone please solve 7???

Mathematics
2 answers:
allsm [11]2 years ago
4 0

Answer:

Area of B = 609 cm^2.

Step-by-step explanation:

A:B = 5:3   so

A/B = 5/3  .............(1)

also  we are guven that

A + B = 1624..........(2)

From equation (1)  3A + 5B so

B = 3A / 5 = 0.6A.

Substitute for B in equation (2):

A + 0.6A = 1624

A = 1624/ 1.6

A = 1015

and B = 1624 - 1015

= 609 cm^2.

cestrela7 [59]2 years ago
3 0

Answer:

A

Step-by-step explanation:

Sum the parts of the ratio, 5 + 3 = 8 parts

Divide the total area by 8 to find the value of one part of the ratio.

1624 ÷ 8 = 203 cm² ← value of 1 part of ratio, thus

Area of B = 3 × 203 = 609 cm² → A

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