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2 years ago

Please help... need help ASAP

Mathematics

1 answer:

abruzzese [7]2 years ago

7 0

Answer:

did the test got it right.

Step-by-step explanation:

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-2x+2y=6 7x-8y=-27 what is the solution

navik [9.2K]

-2x+2y=6
7x-8y=-27
5x-6y=-21
-x+y=3
6x-7y=-24
6x-7y=-4(-2x+2y)
6x-7y=8x-8y
-6x from both sides:
-7y=2x-8y
add 8y to both sides:
y=2x
-2x+2y=6
2y-6=2x
2y-6=-12
-6-6=-12
y=-3
x=-6

Hope this helps :)

8 0

2 years ago

If 95mg is 50% is the sodium content, what is 100%

Phantasy [73]

50% times 2=100%
95 times 2=190
answer is 190mg

3 0

3 years ago

Read 2 more answers

denis23 [38]

Answer:

$B = 325$

Step-by-step explanation:

Given

Total = 900

Singing = 600

Dancing = 500

None = 125

Required

Determine the number of students that participate in both

Representing; Singing with S, Dancing with D, Both singing and dancing with B and None with N;

In Set Notation;

$Total = (S - B) + (D - B) + N + B$

Substitute 900 for Total, 600 for S, 500 for D and 125 for N

$900 = (600 - B) + (500 - B) + 125$

Open Brackets

$900 = 600 - B + 500 - B + 125 + B$

Collect Like Terms

$900 = 600 + 500 + 125 - B - B + B$

$900 = 1225- B - B + B$

$900 = 1225- B$

Collect Like Terms

$900 - 1225 = -B$

$-325 = -B$

Multiply both sides by -1

$-1 * -325 = -B * -1$

$325 = B$

Reorder

$B = 325$

<em>Hence, the number of students that do not participate in both is 325</em>

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2 years ago

Simplify the expression √6 (√33=7)

marin [14]

14.07 is the answer to the question above

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2 years ago

In your own words, explain why solving 4=2x uses the Division Property of Equality. Provide an example with your explanation.

balandron [24]

Solving 4=2x is using the division property because in order to get the last portion of that answer u have to divide both sides by 2x to get x by itself
For example
4=2x to get x by itself you have to divide both sides by 2x
And your final answer would be
x is equal to 2 (x=2)

4 0

2 years ago