3 years ago

6x – 7y = 25 15x+3y = 42

Mathematics

1 answer:

Dmitrij [34]3 years ago

8 0

The answer would =-1

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Which expression is equivalent to 10 square root 5

IRINA_888 [86]

Answer:

Step-by-step explanation:

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$\sqrt{ {10}^{2} } \sqrt{5}$

$\sqrt{5 \times {10}^{2} }$

$\sqrt{5 \times 100}$

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3 years ago

Is either x=9 or x=15 a solution to x-3=12?

kvasek [131]

Answer:

It's 15

c. x=15 is a solution but x=9 is not

Step-by-step explanation:

15-3=12

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what number become double when you divide by itself and become its half when you multiply it by itself

Anastasy [175]

Answer:

1/2

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Mrrafil [7]

Now in this scenario, they scored 45 points from three-point baskets. This means they got 15 baskets. Now we can convert this into ratio form and solve using cross multiplication:

5/7=15/x

5x=15*7

x=21

They had 21 three point tries. Hope this helps :) lmk if you need more help.

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3 years ago

Christine's middle school has a total of 900 students and 45 teachers . The local high school has 110 teachers & a student-t

qaws [65]

Answer:

2,200 students

Step-by-step explanation:

To find the number of students, create a proportion which is two equal ratios. Since the middle school and the high school are proportional then they have equal ratios.

$\frac{students}{teachers}= \frac{900}{45}=\frac{x}{110}$

Solve for x by cross multiplying by multiplying the numerator and denominator of each fraction.

900(110) = 45(x)

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3 years ago