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svp [43]
3 years ago
9

I need help please and thank you ( show your work please )

Mathematics
1 answer:
shusha [124]3 years ago
7 0

Answer:

A

Step-by-step explanation:

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The ratio of Maths and science books in a school library is 4:5. If the number of science books is 75, find the number of Maths
sveticcg [70]

Answer:

let ratio 4:5 be 4x& 5x

according to the question

5x=75

x=75/5=15

the number of Maths books=4x=4×5=20 is your answer

8 0
3 years ago
D. 10.83<br> Math question Please Help don't Guess
shepuryov [24]

Remark

You need to do some trig to get the final answer. There is no way around it. You can however, solve the first part with the Pythagorean Theorem.

Step One

Find AB

AB^2 = DB^2 + AD^2

AB^2 = 7.5^2 + 4.9^2

AB^2 = 56.25 + 24.01

AB^2 = 80.26

AB = sqrt(80.26)

AB = 8.9588

Step Two

Move to the triangle on your right. Find x

Tan(C)= opposite / adjacent

Tan(55.8) = AB/adjacent

Tan(55.8) = 8.9588/ x Multiply both sides by x

x * tan(55.8) = 8.9588 Divide by tan(55.8)

x = 8.9588/tan(55.8)

x = 6.09

Answer: A

5 0
3 years ago
Help with my math please thank you
OlgaM077 [116]

Answer:

-11 on the right

0 in the middle

12 on the left

8 0
3 years ago
I didn’t do this but my friend needs help so help
yuradex [85]

Answer:

1. X = 14

2.X =13

Step-by-step explanation:

The angles are 90 degrees. I did math to check if the x values are correct and they are.

8 0
3 years ago
Hadley wants 0.3 of the flowers in her arrangement to be roses and the rest daisies. What percentage of the flowers will be rose
olga_2 [115]
The percentage will be 30% I'm sure hope helped
4 0
3 years ago
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