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Digiron [165]
3 years ago
12

If there are 10 boys to 7girls, how many boys are there when there are 21 girls?​

Mathematics
2 answers:
DedPeter [7]3 years ago
4 0

Answer:

30 boys

Step-by-step explanation:

10 boys to 7 girls= 10:7

Blank boys :21 girls

7x3=21

10x3=30

Blank=30

30 boys : 21 girls

r-ruslan [8.4K]3 years ago
3 0
30 I hope this helps!!
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Calculate the average rate of change for the function f(x)=x^4+3x^3-5x^2+2x-2, from x=-1 to x=1
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\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
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-------------------------------\\\\
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6 0
3 years ago
(4/9)^-1=<br><br><br>A. -4/9<br><br>B. 9/4<br><br>C. -9/4
Romashka-Z-Leto [24]

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Now, we can change 4⁻¹ to 4¹ by moving it to the denominator and

we can change 9⁻¹ to 9¹ by moving it to the numerator.

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5 0
3 years ago
A certain medicine is given in an amount proportional to a patient's body weight. Suppose a patient weighing
Marizza181 [45]
Set up a proportion.

pounds / milligrams of medicine

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195x = 279 times 130
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x = 36,270/195
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A patient weighing 130 pounds needs 186 milligrams of medicine.
6 0
3 years ago
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