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nevsk [136]
2 years ago
7

If you answer it right i will give Brainliest. Take 7 times 5= divided by 25 times 100 = divided by 300.

Mathematics
1 answer:
Svetllana [295]2 years ago
8 0

Step-by-step explanation:

7×5÷25×100÷300

25÷5=5

7×5×100÷300

300÷100=3

7×5×3=105

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Sara spent half of her allowance going to the movies. She washed the family car and earned 9 dollars. What is her weekly allowan
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$7, I think. I would not be too sure about it, though.
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3 years ago
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2m+n=7<br> 4m+3n=-10<br> Solve using substitution method
jeka57 [31]

Answer:

m=31/2, n=-24. (31/2, -24).

Step-by-step explanation:

2m+n=7

4m+3n=-10

-------------------

n=7-2m

4m+3(7-2m)=-10

4m+21-6m=-10

-2m=-10-21

-2m=-31

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m=31/2

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5 0
3 years ago
50 POINTSSSS!!!!!!!!!!!!!!!!!!!!!!!!!
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Answer: To find the critical value, follow these steps.

Compute alpha (α): α = 1 - (confidence level / 100)

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Step-by-step explanation:

8 0
3 years ago
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It says factor 49x-28
kvasek [131]

Answer:

7(7x-4)

Step-by-step explanation:

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6 0
3 years ago
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Nathaniel bought 3 hamburgers and 2 orders of fries for $12.50. Liam bought 2 hamburgers and 4 orders of fries for $13. How much
Nina [5.8K]

The cost of an order of 1 hamburger and 2 orders of fries cost which Nathaniel and Liam bought is $6.5.

<h3>What is system of equation?</h3>

A system of equation is the set of equation in which the finite set of equation is present for which the common solution is sought.

Let the cost of 1 hamburger is x dollar and 2 orders of fries is y dollars. Nathaniel bought 3 hamburgers and 2 orders of fries for $12.50. Thus,

3x+2y=12.5

Solve this equation as,

2y=12.5-3x\\y=\dfrac{12.5-3x}{2}                        .....1

Liam bought 2 hamburgers and 4 orders of fries for $13. Thus,

2x+4y=13

Put the value of y in this equation and solve it further,

2x+4(\dfrac{12.5-3x}{2})=13\\2x+25-6x=13\\-4x=13-25\\-4x=12\\x=\dfrac{12}{4}\\x=3

Put this value of x in equation 1,

y=\dfrac{12.5-3\times3}{2}\\y=\dfrac{3.5}{2}\\y=1.75

The cost of an order of 1 hamburger and 2 orders of fries is,

C=3\times 1+2\times1.75\\C=3+3.5\\C=6.5

Thus, the cost of an order of 1 hamburger and 2 orders of fries cost which Nathaniel and Liam bought is $6.5.

Learn more about the system of equations here;

brainly.com/question/13729904

#SPJ1

3 0
2 years ago
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