Help please i'll give you brainliest

Lori wants to determine the average amount of time that students at her school spend on a computer each day there are 350 studen

Bezzdna [24]

Answer:

2 students from each 15 classrooms

Step-by-step explanation:

"The number of boys and girls is approximately equal" is probably the most random sample, that is if the whole topic of the publication is Lorrie and her experimenting endeavors. If that is not the subject, then "Lorrie wants to determine the average amount of time that students at her school spend on the computer each day" is the most strange and random

3 0

3 years ago

A jet is flying 7 miles above the ground. The pilot spots an airport as shown below. What is the distance from the plane to the

Fynjy0 [20]

It's hard to help if you can't provide everything with the question

8 0

3 years ago

Brian tied a 136-foot rope around the perimeter of his rectangular house. He knows that the length of the house is 10 feet less

STALIN [3.7K]

Answer:

length 42 cm and width 26 cm

Step-by-step explanation:

Given

Since Brian tied 136 foot rope around the perimeter , hence perimeter of house is 136 foot.

Given that shape of house is rectangular.

formula to calculate perimeter of rectangle can be used which is 2*(L+B)

where L is length of rectangle and B width of rectangle

Let the L and B be length of rectangular side of house

According to question

length of house is 10 feet less than twice the width of house

mathematically it can be represented as

L = 2*B - 10 --->eq. 1

Perimeter of house = 136 feet

using formula of Perimeter of rectangle

136 = 2*(L+B)

substituting the value of length in terms of width from eq. 1 in formula of perimeter

=> 136/2 = 2*B - 10 + B (2*B+ B = 3B)

=> 68 = 3*B - 10

=> 78 = 3*B

B = 78/3 = 26

Therefore B which is width = 26 CM

length = 2*B - 10= 26*2 - 10 = 52-10=42

length of house = 42 cm

Hence dimension of Brian's house is length 42 cm and width 26 cm

5 0

3 years ago

Janelle and her best friend Carmen go shopping. the function p(t) = 5^4-3x^3 +2^2+24 represents how much money each girl spent b

emmasim [6.3K]

<h2>Hello!</h2>

The answer is:

They spent $176 together.

We are given an expression which represents the money spent for each girl, it's a function of time and it will show how much they can spend in terms of hours.

Assuming that you have committed a mistake writing the equation, otherwise, the given options would not fit, the expression is:

$p(t)=5x^{4}-3x^{3}+2x^{2}+24$

Now, from the statement we know that the function represents how much money each girl spent, so, if we need to calculate how much money they will spend together, we need to multiply the expression by 2, so we have:

$p(t)=2(5x^{4}-3x^{3}+2x^{2}+24)$

Then, calculating the spent money for 2 hours, we need to substitute the variable "x" with 2.

Calculating we have:

$p(2)=2(5*(2)^{4}-3*(2)^{3}+2*(2)^{2}+24)=2(5*16-3*8+2*4+24)$

$p(2)=2(5*16-3*8+2*4+24)=2(80-24+8+24)=2*88=176$

Hence, we have that they spent $176 together.

Have a nice day!

3 0

4 years ago

Read 2 more answers

Help!!!!!!!!!!!!!!!!

Sladkaya [172]

Step-by-step explanation:

<h3>In Solving This You Need to Change It Into Improper Fractions First;</h3>

1 2/5×3 1/2

•You then multiply the 5 by the 1 and then add it to the 2 which is then going to be;

7/5× 3 1/2

•Then you multiply the 2 by the 3 and then add it to the 1;

7/5×7/2

•Then you proceed to multiply the first numerator by the second numerator and then also multiply the first denominator by the second denominator which will be;

14/10

After this you go on to simplify which is going to be;

7/5(NB: It was divided by two)

So mixed number in it's simplest form is going to be;

1 2/5

In Decimal form would have been; 1.4

Since the question is asking for mixed number in it's simplest form it's going to be;

1 2/5

8 0

3 years ago