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4 years ago

Which class has 32% girls?

Mathematics

2 answers:

Alekssandra [29.7K]4 years ago

4 0

A. 11/30 = 0.367 = 36.7% girls...not this one
B. 16/50 = 0.32 = 32% girls <===
C. 12/28 = 0.428 = 42.8% girls...nope
D. 21/40 = 0.525 = 52.5% girls...nope

ur answer is B

Luden [163]4 years ago

3 0

Class B has 32% girls because 50 x 32% (or .32) equals 16

Hope this helps!

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3 years ago

The function y = f (x) is graphed below. What is the average rate of change of the function f(x) on the interval - 1 ≤ x ≤ 3?

jonny [76]

Answer:

$\displaystyle -2$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Average Rate of Change: $\displaystyle \frac{f(b) - f(a)}{b - a}$

Step-by-step explanation:

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3 years ago

ivann1987 [24]

9514 1404 393

Answer:

large: 55 lb
small: 30 lb

Step-by-step explanation:

Let x and y represent the weights of the large and small boxes, respectively. The problem statement gives rise to the system of equations ...

x + y = 85 . . . . . combined weight of a large and small box

70x +50y = 5350 . . . . combined weight of 70 large and 50 small boxes

We can subtract 50 times the first equation from the second to find the weight of a large box.

(70x +50y) -50(x +y) = (5350) -50(85)

20x = 1100 . . . . simplify

x = 55 . . . . . . . divide by 20

Using this in the first equation, we can find the weight of a small box.

55 +y = 85

y = 30 . . . . . . . subtract 55

A large box weighs 55 pounds; a small box weighs 30 pounds.

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