3 years ago

Solve the following system by the substitution method. Check the solution. 3x+5y=47 x=y+5

1 answer:

4 0

Hello :
<span>3x+5y=47 ....(1)
x=y+5 ....(2)
</span><span>subst in (1) :
</span>3(y+5) +5y =47
3y+15+5y = 47
8y = 32
y =4
by (2) : x =4+5 = 9
one solution : (9 , 4)

You might be interested in

$5.50 plus sales tax after tax the price was $5.86 what’s the tax rate

ladessa [460]

The answer is 6.55%.

7 0

4 years ago

Read 2 more answers

Please tell me how to figure it out thanks

den301095 [7]

Answer:

A - 4? (Don’t quote me)

Explanation:

It says the tank needs to be quadrupled, and quadrupled means by 4.

6 0

3 years ago

6/7 divided by 3 help meh fast

leonid [27]

6/7 divided by 3
6/7 times 1/3
6/21
3/7

8 0

3 years ago

Read 2 more answers

The cost to a store for a box of cereal is $2.50. The store is selling the box of cereal for $3.50. What is the percent of marku

zysi [14]

Well, the cereal cost 2.5, and the store is selling for 3.5, so is 1 buck more.

if we take 2.5 to be the 100%, what is 1 off of it in percentage?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
2.5&100\\
1&p
\end{array}\implies \cfrac{2.5}{1}=\cfrac{100}{p}\implies p=\cfrac{1\cdot 100}{2.5}\implies p=\stackrel{\%}{40}$

8 0

4 years ago

Hallie is estimating the height of the superman rollercoaster in Mitchellville, Maryland.

Nostrana [21]

Answer:

Step-by-step explanation:

5 0

4 years ago