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4 years ago

Sophia babysat for 3 7/12 hours on friday. she babysat for 2 5/6 hours on Saturday. Complete the sentences by estimating.

Mathematics

1 answer:

mafiozo [28]4 years ago

7 0

The answer is: 6 and 5/12 hours

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What is the first step to solve the following system of equations using substitution?

Akimi4 [234]

Answer:

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

Thus, option A) is true.

The solution to the system of equations be:

$x = 4, y = 5$

Step-by-step explanation:

It is important to remember that when we solve the system of equations, the first step we need to do is to solve one of the equations for one of the variables.

Given the system of equations

$x - y = -1$

$2x - y = 3$

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

$x-y=-1$

Add y to both sides

$x-y+y=-1+y$

$x=-1+y$

Thus, option A) is true.

<u>NOW LET US SOLVE THE REMAINING PORTION</u>

$\mathrm{Subsititute\:}x=-1+y$ to solve for y

$\begin{bmatrix}2\left(-1+y\right)-y=3\end{bmatrix}$

$-2+y=3$

$y=5$

For x = -1 + y

substitute y = 5

$x=-1+5$

$x=4$

Thus, the solution to the system of equations be:

$x = 4, y = 5$

3 0

3 years ago

Help evaluating the question for 14,16

Olenka [21]

Number 14 is 61 and Number 16 is 36..,.

5 0

4 years ago

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Write the inverse of g(x) = e x<br><br>g -1(x) = _____.

kifflom [539]

1 is the number which is the answer

8 0

3 years ago

Read 2 more answers

A blacksmith blends one alloy of silver that is 35% silver and another that is 95% silver. To the nearest ton, how much of the a

hammer [34]

Answer:

Let x be the unknown quantity of 50% silver.

Look at the silver concentrations... This will be 0.5x of actual silver,

Added to 5% silver in 500g or 0.05(500)g of actual silver

Totaling to (500+x)g of 20% silver which will have 0.2(500+x)g of silver

Your equation is:

0.5x + 0.05(500) = 0.2(500+x)

Solve for x to find the grams of 50% silver used

Step-by-step explanation:

sana maka tulong po sorry po kung mali

5 0

3 years ago

Last Year, a state university received 3,560 applications from boys. Of those applications, 35 Percent were from boys who lived

Rom4ik [11]

Answer:

a)10%=3560/100=356

5%=356/2=178

30%=356X3=1068

35%=1068+178=1246

b)10% of 40%=3560/4=890

100%890x10=8900(answer)

hope this helps

5 0

3 years ago