4 years ago

If the trapezoid below is reflected across the x-axis, what are the coordinates

Mathematics

1 answer:

MariettaO [177]4 years ago

6 0

Answer:

4, -8

Step-by-step explanation:

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Solve the system by substitution 5x+y=-10. 4x-7y=-8

storchak [24]

Answer:

x = -2 and y = 0

Step-by-step explanation:

5x + y = -10

4x - 7y = -8

Rearrange the first equation to equal y.

5x + y = -10

y = -10 - 5x

Replace y in the second equation with the first equation.

4x - 7y = -8

4x - 7(-10 - 5x) = -8

4x - (-70 -35x) = -8

4x + 70 + 35x = -8

Rearrange the equation to find x.

4x + 35x = -8 - 70

39x = -78

x = -2

Now that you know x, use the rearranged first equation to find y.

y = -10 - 5x

y = -10 - 5(-2)

y = -10 + 10

y = 0

8 0

3 years ago

Simplify the expression. Write the answer with positive exponents only. Assume the variable represents a nonzero real number.

luda_lava [24]

Answer:

$\frac{1}{w^{29}}$

Step-by-step explanation:

The given expression is $\frac{w^{-7}(w^{-9})^2}{w^4}$ .

Since, $w^{-7}=\frac{1}{w^7}$

And $w^{9}=\frac{1}{w^9}$

Expression will become,

$\frac{w^{-7}(w^{-9})^2}{w^4}=\frac{\frac{1}{w^7}(\frac{1}{w^9})^2}{w^4}$

$=\frac{\frac{1}{w^7\times w^{18}}}{w^4}$

$=\frac{\frac{1}{w^{(7+18)}}}{w^4}$

$=\frac{1}{w^{25}}\times \frac{1}{w^4}$

$=\frac{1}{w^{25}\times w^4}$

$=\frac{1}{w^{29}}$

Therefore, Simplified form of the given expression will be $\frac{1}{w^{29}}$ .

3 0

3 years ago

Theee scores on a recent test are three consecutive integers whose sum is 234 what are the three scores

gayaneshka [121]

234/3 = 78

78+1 = 79

78-1 = 77

77+78+79 = 234

7 0

3 years ago

How would you solve 3x=18

Yakvenalex [24]

Hi!

$3x=18$

$\frac{3x}{3}=\frac{18}{3}$

$x=6$

Explanation: This question is super easy on this question. First you had to divide by 3 from both sides. And simplify, it gave us the answer is x=6 is the right answer. Hope this helps! And thank you for posting your question at here on Brainly. And have a great day. -Charlie

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4 years ago

Answer any Quetion in slope intercept form to represent a line that includes the points (3,-4) and (5,2). Complete explanation o

Ray Of Light [21]

Hopes this helps......

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3 years ago