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3 years ago

A high school graduating class is made up of 529 students. There are 155 more girls than boys, How many boys are in the class?

Mathematics

1 answer:

Firdavs [7]3 years ago

7 0

374 boys are in the class
529-155= 374

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F(x) = -x^2+3 <br><br> find f(-2)

Fiesta28 [93]

f(x) = -x² + 3

f(-2) = -(-2)² + 3 = -4 + 3 = -1

Answer → f(-2) = -1

7 0

2 years ago

A bakery sold a total of 80 cupcakes in a day, and 95% of them were chocolate flavored. How many of the cupcakes sold that day w

matrenka [14]

Answer:

Step-by-step explanation:

80 of 95%

80/ 100 × 95

8 × 95/ 10

760/ 10

= 76

hope it helps!

3 0

2 years ago

A cube-shaped water tank having 6 ft side lengths is being filled with water. The bottom is solid metal but the sides of the tan

Mekhanik [1.2K]

Answer:

0.033 ft

Step-by-step explanation:

Let g = 32.2 ft/s2 and h be the maximum height that water can be filled before the sides shatter.

Pressure is distributed from 0 to maximum at the bottom like the following equation:

$P = \rho gh$

So the force generated by water pressure on the side of the tank is

$F = PA = \rho ghs/2$

where s = 6ft is the side length of the tank. This force cannot be larger than 200lb

$\rho ghs/2 \leq 200$

$62.4*32.2*h*6/2 \leq 200$

$h \leq 0.033 ft$

4 0

3 years ago

Suppose that we were going to conduct a study to determine if there is an decrease in risk of getting lung cancer based on wheth

nalin [4]

Answer: Option C

Step-by-step explanation:

In group(1), the risk is= 5/2000 x 100

= 0.25

In group(2), the risk is= 5/1000 x 100

= 0.5

The sample relative risk is= 0.25/0.5

= 0.5

So, option C is correct.

7 0

2 years ago

HELP THIS IS DUE IN 15 MINUTES I DONT KNOW HOW TO SOLVE IT!!!

NARA [144]

Answer:

(x,y)=(-10, -30)

Step-by-step explanation:

x/4 -y/12 = 0

--> x/4 = y/12

substitute into the first eq.

x/4 + y/12 = -5

y/12 + y/12 = -5

2y/12 = -5

y= (-5) * 12/2 = -30

solve for x, x/4 = (-30)/12

x=4* (-30)/12 = -10

8 0

2 years ago