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n200080 [17]
3 years ago
6

PLEASE HELP URGENT

Mathematics
1 answer:
Likurg_2 [28]3 years ago
4 0
X = 9 :D sjsjsjdbdndnsjskdksndnd
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Variables in 8th grade math
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The answer to the questions

4 0
3 years ago
To qualify for the postcard rate for postage, a postcard must be less than 4 1/2 inches high. Elayne has a postcard that is 4 7/
timurjin [86]

Answer:

3/8 inches

Step-by-step explanation:

The postcard must be less than 4 1/2 inches high.

Elayne's postcard is 4 7/8 inches high.

We need to subtract the limit from the height of her postcard to know how high it is above the limit:

4 7/8 - 4 1/2 = 3/8

Her postcard is higher than the limit by 3/8 inches.

3 0
3 years ago
Which statement describes the effect on the parabola with an equation of y = x2 – 2x when it is changed to y = x2 + 2x?
erma4kov [3.2K]

Answer:

561-566 and the other one I was talking to about this one you had matching the name and I was wondering what the price

5 0
3 years ago
Read 2 more answers
Y=6x4 + 7x2 and x = vw +1
belka [17]

Answer:

w=-1/6 or w=-3

Step-by-step explanation:

Substitute the value of x and y into the first equation and solve for w:

y=6x^4+7x^2\\10=6(\sqrt{w+1})^4+7(\sqrt{w+1})^2\\10=6(w+1)^2+7(w+1)\\10=6(w^2+2w+1)+7w+7\\10=6w^2+12w+6+7w+7\\0=6w^2+19w+3

Solve for w with the quadratic formula:

w=\frac{-b\±\sqrt{b^2-4ac}}{2a} \\w=\frac{-19\±\sqrt{19^2-4(6)(3)} }{2(6)}\\w=\frac{-19\±\sqrt{361-72}}{12} \\w=\frac{-19\±\sqrt{289} }{12} \\w=\frac{-19\±17}{12}

After simplifying, we get either w=-1/6 or w=-3.

Not sure if w needs to satisfy all conditions while maintaining everything as real numbers, because if w=-3, then x is an imaginary number. But both values work just as fine.

4 0
2 years ago
How do i solve y= -5 in lines in the xy plane ? im confused .
Ilia_Sergeevich [38]

Answer:

see the explanation

Step-by-step explanation:

we know that

The equation of a horizontal line is equal to the y-coordinate of the point that passes through it  

In this problem we have

y=-5

This is a horizontal line (parallel to the x-axis)

The slope of this line is equal to zero

so

All points that pass through the line will have the same y-coordinate equal to -5

see the attached figure to better understand the problem

8 0
3 years ago
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