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3 years ago

Points D, E, and Fare midpoints of AABC. Which segment is parallel to AC?

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

8 0

The answer is A) DE. I really don’t know how to explain this. Just remember the definition of parallel lines and you’ll see it.

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3 years ago

10x10x10 exponent form word form the power of 10

sasho [114]

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10^3 i think

Step-by-step explanation:

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3 years ago

Rose bought a new hat when she was in vacation. If the hat cost $975 and the sales tax was 6%, how much did rose pay for the hat

Rufina [12.5K]

Hi!

To solve this, set up a proportion and cross multiply.

$\frac{x}{975} \frac{6}{100}$

975 x 6 = 5850

5850/100 = 58.5

58.5 + 975 = 1033.5

The answer is $1033.5

Hope this helps! :)

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3 years ago

Which is the correct cofunction identity for cos theta

makvit [3.9K]

Answer:

C. sin(90° - θ)

Step-by-step explanation:

A trig function of an angle equals the cofunction of the angle's complement.

The cofunction of cosine is sine, and the complement of θ is 90° - θ.

∴ cosθ = sin(90° - θ)

8 0

3 years ago

Read 2 more answers

Solve the Equation <br> 12x-14y=-8<br> -8x-14y=-52

trapecia [35]

Answer:

$\large\boxed{x=\dfrac{11}{2},\ y=\dfrac{86}{35}}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}12x-14y=-8\\-8x-14y=-52&\text{change the signs}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}12x-14y=-8\\8x+14y=52\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad20x=44\qquad\text{divide both sides by 20}\\.\qquad x=\dfrac{44:4}{20:4}\\\\.\qquad x=\dfrac{11}{5}\\\\.\qquad\boxed{x=2.2}\\\\\text{Put the value of x to the second equation}\ 8x+14y=52:$

$8(2.2)+14y=52\\17.6+14y=52\qquad\text{subtract 17.6 from both sides}\\14y=34.4\qquad\text{divide both sides by 14}\\y=\dfrac{34.4:2}{14:2}\\\\y=\dfrac{17.2\cdot10}{7\cdot10}\\\\y=\dfrac{172:2}{70:2}\\\boxed{y=\dfrac{86}{35}}$

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3 years ago