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marta [7]
3 years ago
8

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:

<h2>a) \sqrt{500}</h2>

Step-by-step explanation:

10 \sqrt{5}

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

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

\sqrt{5 \times 100}

\sqrt{500}

6 0
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

9-3=6

7 0
3 years ago
what number become double when you divide by itself and become its half when you multiply it by itself​
Anastasy [175]

Answer:

1/2

Step-by-step explanation:

1/2 times 1/2 equals .25 (.25 is 1/4 which is half of 1/2)

1/2 divided by 1/2 is 1( 1 is 1/2 plus 1/2)

7 0
3 years ago
In basketball, some baskets are worth two points. Others are worth three points. In one game, the ratio of three-point baskets t
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.

8 0
3 years ago
Christine's middle school has a total of 900 students and 45 teachers . The local high school has 110 teachers &amp; 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)

99,000=45x

2,200 = x


5 0
3 years ago
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