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2 years ago

Please help me! Will give brainlst :)

Mathematics

1 answer:

tigry1 [53]2 years ago

3 0

Answer:

9. the measure of DEF is 103°

10. the measure of DEG is 77°

11. 90°

Step-by-step explanation:

it's pretty simple, just take into consideration that the final measure of all the angles of a triangle must be 180°

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A circle has a center at (4, -7) and a radius of 4 units.

elena-s [515]

Answer:

The third one

Step-by-step explanation:

The equation for a circle is $(x-h)^{2} +(y-k)^{2} =r^{2}$

(h, k) is the center

5 0

3 years ago

Wat is -27/3 wil mark brainless

KATRIN_1 [288]

Answer:

Step-by-step explanation:

3x9=27

27/3=9

3 0

3 years ago

15. In AABC if mZA is thirteen less than mzC and mZB is eleven less than four times m

vlabodo [156]

Answer:

$m\angle A=21$ °

$m\angle B=125$ °

$m\angle C=34$ °

Step-by-step explanation:

Let the measure of angle C be $x$ °.

Given:

In triangle ΔABC,

$m\angle A$ is thirteen less than $m\angle C$ and $m\angle B$ is eleven less than four times $m\angle C$ . This gives,

$m\angle A = x-13$

$m\angle B=4x-11$

Also, $m\angle C=x$

Now, for a triangle, the sum of all its interior angles is equal to 180°.

Therefore, $m\angle A + m\angle B + m\angle C=180$

Plug in all the values and solve for x. This gives,

$x-13+4x-11+x=180\\6x-24=180\\6x=180+24\\6x=204\\x=\frac{204}{6}=34$

Therefore, measure of angle C is 34°.

Measure of angle A is, $m\angle A=x-13=34-13=21$ °.

Measure of angle B is, $m\angle B=4x-11=4(34)-11=136-11=125$ °.

8 0

3 years ago

You join an Internet service. You get the first 5 hours for free, and then you pay $2 per hour. How many hours of Internet use,

Vika [28.1K]

Answer:

Step-by-step explanation:

firstly we know we get 5 hour free so we know that when we add our total it will go up by 5. an easy way to do the equation is to take 45 and divide by two because we are essentially paying two of our 45 dollars every hour. this means that we will get half the amount we pay in hours. 45/2 =22.5 (do not round up because you will only get what you pay for and if you cant pay for a full hour you just do not get it) 22+5=27. so you get 27 hours of internet.

5 0

2 years ago

What is the area of this face? 4 in. 4 in. in 4 in.

bagirrra123 [75]

Answer:

64 inches

Step-by-step explanation:

4 0

3 years ago