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2 years ago

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

frutty [35]2 years ago

3 0

Answer:

m∠7=34°

Step-by-step explanation:

m∠2=m∠8=146° because alternate interior angles are congruent.

m∠7=180-m∠8=34° because it is a linear pair.

Black_prince [1.1K]2 years ago

3 0

Answer:

∠7 = 34°

Step-by-step explanation:

Since r and s are parallel lines, then

∠2 and ∠5 are same- side interior angles and are supplementary, thus

∠5 = 180° - ∠2 = 180° - 146° = 34°

∠7 = ∠5 = 34° ( vertical angles are congruent )

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Ginger bought 3 boxes of markers. She gave markers to her sister. Now Ginger has 18 markers. How many markers were in each box?

Deffense [45]

does it say how much boxes she gave her sister?

8 0

2 years ago

Solve the system using elimination.<br> 2x + 18y = -9<br> 4x + 18y = -27

Elan Coil [88]

First, let's cancel out the x by multiplying 2x + 18y = -9 by -2.

-2 ( 2x + 18y = -9) = -4x -36y = 18

Then, we combine the two equations.

-4x + 4x = 0

18y - 36y = -18y

-27 + 18 = -9

Our new equation is -18y = -9.

Now, divide both sides by -18.

-18y / -18 = y

-9/ -18 = 1/2

y = 1/2

We can plug in a value for y since y = 1/2 now.

Let's use 2x + 18y = -9

Plug in y.

2x + 18(1/2) = -9

2x + 9 = -9

Then, subtract 9 from both sides.

2x = -18

Divide by 2.

2x/2 = x

-18/2 = -9

x = -9

Lastly, we can plug in both x and y values to see it works.

2(-9) + 18(1/2) = -9

-18 + 9 = -9

Therefore, the values of x and y does work.

x = -9

y = 1/2

4 0

2 years ago

PLEASE HELP!!!

ki77a [65]

Part A:
I have attached the graph of this system of inequalities.

Part B:
Plug in (8,10) into both equations

10 > 3(8) + 10
10 > 24 + 10
10 > 34

This is false!

10 < (-3/4)(8) - 1
10 < (-3)(2) - 1
10 < -6 - 1
10 < -7

This is also false!

So, (8,10) is not included in the solution area for the system.

3 0

2 years ago

(2/3,1) and slope m=4/5

ad-work [718]

Answer:

y-1=4/5(x-2/3)

Step-by-step explanation:

y-y1=m(x-x1)

y-1=4/5(x-2/3)

7 0

2 years ago

Mount Kilimanjaro is approximately 19,000 feet in height. as you go up in altitude through the atmosphere near earth surface the

horsena [70]

Answer:

10℉

Step-by-step explanation:

9,000 feet - 4000 feet (because the camp is 4000 feet above sea level) = 5000 feet

for every 1000 ft you decrease by 3.6℉ therefore 5(3.6) = 18 degrees

when you get to the top it is -8℉ to find out the temp at base camp you just add 18 ℉ to the final tempreture

-8 +18 = 10℉

5 0

2 years ago