All categories

3 years ago

Ms. Johnson’s class running a food drive . The 20 students collected 180 cans .

Mathematics

1 answer:

Ivan3 years ago

5 0

Each student collected 9 cans each. Just divide 180 by 20. :))

You might be interested in

The maximum value of the function: f(x)= -5 x ^2 +30x-200 is?

VARVARA [1.3K]

Answer:

$\displaystyle - 155$

Step-by-step explanation:

we are given a quadratic function

$\displaystyle f(x) = - 5 {x}^{2} + 30x - 200$

we want to figure out the minimum value of the function

to do so we need to figure out the minimum value of x in the case we can consider the following formula:

$\displaystyle x _{ \rm min} = \frac{ - b}{2a}$

the given function is in the standard form i.e

$\displaystyle f(x) = a {x}^{2} + bx + c$

so we acquire:

b=30
a=-5

thus substitute:

$\displaystyle x _{ \rm min} = \frac{ - 30}{2. - 5}$

simplify multiplication:

$\displaystyle x _{ \rm min} = \frac{ - 30}{ - 10}$

simply division:

$\displaystyle x _{ \rm min} = 3$

plug in the value of minimum x to the given function:

$\displaystyle f (3)= - 5 {(3)}^{2} + 30.3 - 200$

simplify square:

$\displaystyle f (3)= - 5 {(9)}^{} + 30.3 - 200$

simplify multiplication:

$\displaystyle f (3)= - 45 + 90- 200$

simplify:

$\displaystyle f (3)= - 155$

hence,

the minimum value of the function is -155

5 0

2 years ago

The length of a screw produced by a machine is normally distributed with a mean of 0.65 inches and a standard deviation of 0.01

Makovka662 [10]

Notice it is +/-4 times standard deviation (0.65-0.04 = 0.61, 0.69-0.04=0.65)

That's almost everything. So (D) is the answer.
99.993666%

3 0

3 years ago

Read 2 more answers

HELP I NEED HELP ASAP

Leviafan [203]

Answer:

Step-by-step explanation:

Photomath, lol

7 0

3 years ago

What is 5 2/6 = ? it’s due tomorrow! i need help w this.

Vika [28.1K]

Answer:5x over 3

Step-by-step explanation:

5x times 2/6

3 0

3 years ago

Find the area of a circle with diameter 18 yd.

larisa [96]

Answer:

Area of the circle is 254.34 yd²

Step-by-step explanation:

Given:

Diameter of circle = 18 yd
π = 3.14

To Find:

Area of circle.

Solution:

Diameter = 18 yd
Radius = 18/2 = 9 yd

We know that,

$\: \: \: \: \dashrightarrow \: \: \: \: \: {\underline{\boxed{\sf{Area \: of \: circle = \pi r^2}}}} \\ \\$

Substituting the required values,

$\\$

$\: \: \: \: \dashrightarrow \: \: \: \: \: \sf Area_{(circle)} = 3.14 \times {(9)}^{2} \\ \\$

$\: \: \: \: \dashrightarrow \: \: \: \: \: \sf Area_{(circle)} = 3.14 \times 81 \\ \\$

$\: \: \: \: \dashrightarrow { \: \: \: \: \: \sf Area_{(circle)} = 254.34 \: {yd}^{2}} \\ \\$

Hence,

Area of the circle is 254.34 yd²

6 0

2 years ago

Read 2 more answers