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4 years ago

6

Copy and complete the table. Sketch each rectangle and label it's dimensions.

1 answer:

VikaD [51]4 years ago

5 0

A. area= 30 perimeter= 32
B. area= 52 perimeter= 34
C. area= 52 perimeter= 29

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Find the Circumference<br> (I need to know how to show the work too)

romanna [79]

Try 3 because 3 times 3 is. 9

3 0

3 years ago

The sum of 5 times one number, x, and 4 times a second number, y, is 75. If the sum of the two numbers is 18, find the two numbe

satela [25.4K]

Answer: $x=3$ and $y=15$

Step-by-step explanation:

First, we are told "sum of 5 times one number, x, and 4 times a second number, y, is 75":

$5x+4y=75$ (1)

Then, we are told "he sum of the two numbers is 18":

$x+y=18$ (2)

At this point we have our system of equations and now we are able to find the values of $x$ and $y$ .

So, let's begin by isolating $x$ from (2):

$x=18-y$ (3)

Substituting (3) in (1):

$5(18-y)+4y=75$ (4)

Finding $y$ :

$90-5y+4y=75$

$y=15$ (5) This is the value of $y$

Substituting (5) in (1):

$5x+4(15)=75$ (6)

Finding $y$ :

$5x+60=75$ (7)

$x=3$ (8) This is the value of $x$

4 0

4 years ago

How do i solve these and graph them ?!

Ainat [17]

Use Desmos. It is good.

Here is the graph.
https://www.desmos.com/calculator/wq4kzps9fq

To change the color, you have to click on the line next to the formula for a long time. A window will pop up so you can change the color.

4 0

3 years ago

Every day sandra eats 1/8 pound of a blueberries. If she does this for 9 days, how many pounds of blueberries did she eat?

IrinaVladis [17]

Answer: 1.125 pounds of blueberries or $1 \frac{1}{8}$ or $\frac{9}{8}$

Step-by-step explanation:

Since she will eat it for 9 days, just multiply or add the pounds.

7 0

3 years ago

A rectangular piece of cardboard that is 7 inches by 20 inches has squares of length x inches on a side cut from each corner.

adoni [48]

Answer:

The remaining area in the form of a polynomial function $A(x)= 140-4x^2$ where 0 < x < 3.

Step-by-step explanation:

Breadth of rectangular piece of cardboard = 7 inches

Length of rectangular piece of cardboard = 20 inches

Area of cardboard = $Length \times Breadth$

Area of cardboard = $20 \times 7$

Area of cardboard = $140 in^2$

Squares of length x inches on a side cut from each corner.

Length of square = x

Area of 1 square = $Side^2 = x^2$

Area of 4 squares = $4x^2$

Area of remaining portion $A(x)= 140-4x^2$

So, the remaining area in the form of a polynomial function $A(x)= 140-4x^2$ where 0 < x < 3.

4 0

3 years ago