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3 years ago

Khan academy plz help do not understand best answer will get brainliest

Mathematics

1 answer:

vichka [17]3 years ago

3 0

Answer

w=9z

Step-by-step explanation:

The unit rate is 9 so your equation would be y=9x

I think that should help

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Which piecewise function below represents the function f(x)=x?(Only have 2 hours to answer)

irinina [24]

Answer:

f(z)={3z-30. if 0<z<10}

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3 years ago

PLEASE HELP ME IM STUCK ON THIS QUESTION.

Vesna [10]

Answer:

You got it right. Triangle DAC

Step-by-step explanation:

Line segment DA is a perpendicular bisector(it cuts line segment CE perfectly in half making line segment AE an CA congruent. Since the triangle share line segment DA that makes them congruent by the SAS postulate

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3 years ago

Can someone pls help me / alguien me puede ayudar

user100 [1]

Answer:

The simplified expression is:

$\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)=0.2y+0.2x-8$

Step-by-step explanation:

Given the expression

$\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)$

$\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a$

$=\frac{2}{5}y+\frac{1}{5}x-0.2y-6-2$

$\mathrm{Group\:like\:terms}$

$=\frac{2}{5}y-0.2y+\frac{1}{5}x-6-2$

Add similar elements

$=0.2y+\frac{1}{5}x-6-2$

$=0.2y+\frac{x}{5}-6-2$

$=0.2y+\frac{x}{5}-8$

$=0.2y+0.2x-8$

Thus, the simplified expression is:

$\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)=0.2y+0.2x-8$

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3 years ago

If the numbers 25, 30 ,40, 48 are in proportion, Middle terms are.....

zubka84 [21]

Step-by-step explanation:

it is 5/6 ..............

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2 years ago

Help really needed! Thank you to whoever helps!

lana66690 [7]

2•2.5=3•-7 I'm not sure honestly that's my best guess

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3 years ago