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3 years ago

Explain your answer !! Have a nice day Will give braisnlt

Mathematics

2 answers:

Butoxors [25]3 years ago

7 0

Answer:

its c [ 5,7]

Step-by-step explanation:

I hope this helpe

lesya692 [45]3 years ago

3 0

Answer: option C. (5,7)

Step-by-step explanation:

first, in order to find X, simply divide that equation by 3 in order to get X by itself.

3x/3 = 15/3

x = 5

then, i just substituted the value of X, 5, into the equation on the top. this is how we find Y.

6(5) - 2y = 16

30 - 2y = 16

at this point, we divide by 2 in order to get Y by itself.

30/2 - 2y/2 = 16/2

15 - y = 8

then, we subtract 15 from both sides of the equation so that the variable, Y, is by itself completely.

-y = -7

finally, since both are negatives, we can cancel out the negative sign and ake the whole equation positive.

x = 5, y = 7

so, in conclusion, the answer is C. (5,7)

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3 years ago

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Cloud [144]

Answer:

6: x = 3 and y = 5

7: x = 8 and y = 7

Step-by-step explanation:

In parallelograms opposite sides are congruent

For #6

x + 5 = 2x + 2

step 1 subtract x from each side

2x - x = x

x - x cancels out

now we have 5 = x + 2

step 2 subtract 2 from each side

5 - 2 = 3

2 - 2 cancels out

we're left with x = 3

y + 10 = 2y + 5

step 1 subtract 5 from each side

10 - 5 = 5

5 - 5 cancels out

now we have y + 5 = 2y

step 2 subtract y from each side

y - y cancels out

2y - y = y

we're left with y = 5

For #7

3x - 2 = 2x + 6

step 1 add 2 to each side

-2 + 2 cancels out

6 + 2 = 8

now we have 3x = 2x + 8

step 2 subtract 2x from each side

3x - 2x = x

2x - 2x cancels out

we're left with x = 8

6y - 8 = 4y + 6

step 1 add 8 to each side

-8 + 8 cancels out

6 + 8 = 14

now we have 6y = 4y + 14

step 2 subtract 4y from each side

6y - 4y = 2y

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step 3 divide each side by 2

2y / 2 = y

14 / 2 = 7

we're left with y = 7

5 0

3 years ago

Any Help Please?!

umka2103 [35]

Total number of students in the sample = 100

Atleast 3 means equal to or greater than 3. So in order to find the number of students in the sample who play outdoor games for atleast 3 hours we need to add the number of students who play for 3 hours or more.

Therefore, number of students who play for atleast 3 hours = 62 + 8 + 0 = 70

In the sample of 100 students, 70 students play the outdoor games for atleast 3 hours.

Base on this we can the sample proportion of students who play outdoor games for atleast 3 hours = 70/100 = 0.7

Based on the sample proportion, out of 1200 students the expected number of students who will play outdoor games for atleast 3 hours = 0.7 x 1200 = 840 students

Thus, 840 students out of 1200 would be expected to play outdoor games for at least three hours every week. Option B is the correct answer

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4 years ago

-21x+3y=6 How do you solve for y?

andreev551 [17]

All you've got to do is some simple algebra! When you solve for a variable, you are trying to get it alone on one side of the equation. So, we want something that looks like y = ...

First, add 21x to both sides of the equation. This will cancel out the -21x on the left side.
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Now, to get y alone, divide both sides of the equation by 3. This will cancel out the coefficient of 3 on the left side.
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There's the answer. Hope that helps! :)

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3 years ago

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Doss [256]

Answer:

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Step-by-step explanation:

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