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3 years ago

Can you please help with these questions? I need to finish homework by tonight.

Mathematics

1 answer:

noname [10]3 years ago

3 0

Length x width is the formula.
so 18 x 18 for 7.
22 x 24 for 8.
and 8 would probably be 5 x 5 to equal 20. so the length and width would be 5 and 5 because 20 is the area

You might be interested in

Find the percent using the percent equation. 238 cartons is what percent of 68 cartons?

LekaFEV [45]

Answer:350

Step-by-step explanation:

unknown is a

a% of 68=238

a/100 x 68=238

68a/100=238

Cross multiplying we get

68a=100x238

68a=23800

Divide both sides by 68

68a/68=23800/68

a=350

6 0

3 years ago

What is the equation of the line that is parallel to the given

finlep [7]

Answer

O 4x+3y=-6

Step-by-step explanation:

Hello, I can help you witht this,

to solve this you need

step one

the line we are looking for is paraller to the line in the graph, it means both of then have the same slope.

find the slope of the line in the graph

remember

to find the slope of a line with two known points you can use

Let

$P1(x_{1},y_{1})}\\P1(x_{2},y_{2})\\slope\\s=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

pick two points from he graph

P1(0,3)

P2(3,-1)

put the values into the equation

$slope(m)\\m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\m=\frac{-1-3}{3-0}\\m= \frac{-4}{3}$

so, the slope of the line we are looking for is m=-4/3 and passes through the point (-3,2)

step 2

use the equation

$y-y_{1}=m(x-x_{1})$

to ding the equation of the line

P1(-3,2)

$y-y_{1}=m(x-x_{1})\\y-2=\frac{-4}{3} (x+3})\\isolate\ y\\y-2=\frac{-4x}{3}-4\\y=\frac{-4x}{3}-4+2\\y+\frac{4x}{3}=-2\\multiply\ each\ side\ by\ 3\\3(y+\frac{4x}{3})=3*-2\\\\3y+4x=-6\\4x+3y=-6\\$

and that's all, that is the equation of the line that is parallel to the given

line and passes through the point (-3, 2).

Have a good day.

7 0

3 years ago

Solve 15 ≥ -3x or 2/5x ≥ -2. A.) {x | x ≤ -5} B.) {x | x ≥ -5} C.) {all reals}

Lapatulllka [165]

$15 \geq -3x\quad|:(-3)\qquad\vee\qquad \dfrac{2}{5}x \geq -2\quad|\cdot5\\\\\\
-5 \leq x\qquad\vee\qquad 2x \geq -10\quad|:2\\\\\\
-5 \leq x\qquad\vee\qquad x \geq -5\\\\\\x\geq -5\qquad\implies\qquad\boxed{\{x | x \geq -5\}}$

Answer B.

6 0

3 years ago

Read 2 more answers

I understand the simple interest part, however I don’t understand the compounded interest part, need help quick.

Burka [1]

Compound interest is the starting amount x (1+ the interest rate as a decimal)^ the time in years=the final amount.

In your case, the equation will be $1000*(1+0.10)^how many years= the final amount.

7 0

3 years ago

Determine the slope between the points (5, -5) and (-1, 7)

meriva

Answer:

slope = 3

Step-by-step explanation:

5 - x1 -5 - y1

-1- x2 7 - y2

m= y2 - y1 / x2 - x1

m= 7 - (-5) / -1 -(-5)

m= 12 / 4

m= 3

4 0

3 years ago

Read 2 more answers