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2 years ago

Write and Solve Systems of Equations

Mathematics

1 answer:

Rainbow [258]2 years ago

7 0

Answer:

x = 13.5 and y = 7

Step-by-step explanation:

Given equations are :

x + y = 20.5 ...(1)

x − y = 6.5 ...(2)

Add equation (1) and (2).

x + y + x- y = 20.5+6.5

2x = 27

x = 13.5

Put the value of x in equation (1).

13.5 + y = 20.5

y = 20.5-13.5

y = 7

Hence, the values of x and y are 13.5 and 7.

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What is the radius of a circle with a area of 112 square inches

Ugo [173]

Answer:

$\displaystyle 5,9708213214...\:in.$

Step-by-step explanation:

$\displaystyle {\pi}r^2 = A \\ \\ \frac{{\pi}r^2}{\pi} = \frac{112}{\pi} \hookrightarrow \sqrt{35,650707253...} = \sqrt{r^2} \\ \\ \boxed{5,9708213214... = r}$

I am joyous to assist you at any time.

5 0

2 years ago

Which of the following is not a true statement about pi?

FinnZ [79.3K]

Answer:

Option D.The ratio of the radius of a circle to its circumference

Step-by-step explanation:

<em>Verify each statement</em>

A) The ratio of the circumference of a circle to its diameter

The statement is True

Because

$C=\pi D$

$\pi=C/D$

B) Approximated to be 3.14

The statement is True

Because $\pi=3.14159265...$

C) Approximated to be 22/7

The statement is True

Because

$\frac{22}{7}=3.1423$

D) The ratio of the radius of a circle to its circumference

The statement is not True

Because

$\frac{r}{2\pi r}=\frac{1}{2\pi}$

4 0

2 years ago

How many quart are 8/1/4 gallons

Westkost [7]

Given:

Consider the given gallons are $8\dfrac{1}{4}$ gallons.

To find:

The number of quarts in $8\dfrac{1}{4}$ gallons.

Solution:

We know that,

1 gallons = 4 quarts

Using this conversion, we get

$8\dfrac{1}{4}\text{ gallons}=4\times 8\dfrac{1}{4}\text{ quarts}$

$8\dfrac{1}{4}\text{ gallons}=4\times \dfrac{32+1}{4}\text{ quarts}$

$8\dfrac{1}{4}\text{ gallons}=4\times \dfrac{33}{4}\text{ quarts}$

$8\dfrac{1}{4}\text{ gallons}=33\text{ quarts}$

Therefore, there are 33 quarts in $8\dfrac{1}{4}$ gallons.

6 0

2 years ago

Matches the description in the table below.

tatiyna

I think it is A because i think it is the only one that makes sense

5 0

2 years ago

- 21-p-11)<br><br> Giving branliest

posledela

Answer:

-32-p

Step-by-step explanation:

you combine the like terms which would be -21 and -11. that gives you -32 and -p is just by its self since there are no terms to combine it with

6 0

2 years ago