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balu736 [363]
3 years ago
7

Solve the system:

Mathematics
1 answer:
exis [7]3 years ago
8 0
The answer is C) x=11/19, y=7/19
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Can you plz tell me how to work it out plz I need it but today
Tatiana [17]
First we gather all the information we have about the amount of miles that Carolyn runs:
Monday, Wednesday, Friday: 4 1/2 miles
Tuesday, Saturday: 2 3/4 miles
And the question is the amount of miles that she runs in 4 weeks.
So lets begin by calculating the amount of miles she runs in one week, then we just multiply by 4 and we'll have the final answer.
So, we have to add 4 1/2 three times (Monday, Wed, Friday), and 2 3/4 two times (Tuesday, Sat):
1 week Miles = 4 1/2 + 4 1/2 + 4 1/2 + 2 3/4 + 2 3/4
lets add the whole parts and the fraction parts apart:
1 week Miles = (4 + 4 + 4 + 2 + 2) + (1/2 + 1/2 + 1/2 + 3/4 + 3/4)
1 week <span>Miles = (16) + (3/2 + 6/4)
</span>we can reduce the last fraction:
1 week <span>Miles = (16) + (3/2 + 3/2)
</span>1 week <span>Miles = (16) + (6/2)
</span>1 week <span>Miles = (16) + (3)
</span>1 week <span>Miles = 19
</span>therefore Carolyn runs 19 miles each week, so for 4 weeks we have to add 19 four times or multiply it by 4, is the same:
4 weeks <span>Miles = 4*19
</span>4 weeks <span>Miles = 76
hence Carolyn runs 76 miles in 4 weeks.</span>
4 0
3 years ago
Read 2 more answers
Find the density of an object that has a volume of 20 cm3 and a mass of 56g
kherson [118]

Answer: 34y

Step-by-step explanation:

So first you have to round the nearest 2 to the nears 3 then you get 30 then you have to add 4 the add you variable.

7 0
3 years ago
I need help can someone please tell me the answer
Vaselesa [24]

Answer:

<h2>Sorry I couldn't find it.</h2>

Step-by-step explanation:

<h3>:(((((((( </h3>
7 0
3 years ago
What is the quotient of StartFraction 7 Superscript negative 1 Baseline Over 7 Superscript negative 2 Baseline EndFraction? Star
earnstyle [38]

The quotient of two expressions is the division of the expressions

The quotient of \frac{7^{-1}}{7^{-2}} is 7

<h3>How to determine the quotient</h3>

The expression is given as:

\frac{7^{-1}}{7^{-2}}

Rewrite the above expression by applying the law of indices

7^{-1 + 2

Simplify the exponent

7^{1

Evaluate the exponent 7 raise to the power of 1

7

Hence, the quotient of \frac{7^{-1}}{7^{-2}} is 7

Read more about quotient at

brainly.com/question/7068223

6 0
2 years ago
Ewen has 48 white tiles and 16 blue tiles.
Inessa [10]

Answer:

3:1 in simplest form

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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