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3 years ago

I need help, forgot how to answer this?

Mathematics

1 answer:

Gemiola [76]3 years ago

3 0

All three angles in a triangle add up to 180 degrees.

Therefore, we should just add up all the angles given to us and set them equal to 180 :)

3x + 5x + (2x + 5) = 180

Now we just need to combine all the similar terms together (which is the 3x, 5x, and 2x):

10x + 5 = 180

Subtract 5 from both sides of the equation:

10x = 175

Now just divide by 10 on both sides to isolate the x and work out your value:

x = 17.5

Therefore, your final value of x is 17.5 :)

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How much is 44 lbs to 12 gallons

Tju [1.3M]

Hi there!

44 lbs : 12 gal = 22 : 6 = 11 : 3

11 pounds in 3 gallons

Hope this helps!

4 0

3 years ago

What is the probability of rolling a 6 and then a 1 on consecutive rolls of a standard, 6-sided number cube?

ratelena [41]

Hello from MrBillDoesMath!

Answer:

1/36

Discussion:

The events of are unrelated ("mutually exclusive") so the probability of both happening is the product of the individual probabilities. That is,

(1/6) * (1/6) = 1/36

Thank you,

MrB

5 0

3 years ago

Read 2 more answers

If the diameter of a circle is 22, what is the circumference?

andreev551 [17]

Answer:

69.08

Step-by-step explanation:

Formula for a circle

C = 3.14 times d

3.14 times 22

7 0

3 years ago

A medical researcher needs 37 people to test the effectiveness of an experimental drug. If 101 people have volunteered for the t

Rashid [163]

Answer:

The number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

Step-by-step explanation:

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!\cdot (n-k)!}$

Compute the number of ways to select 37 people from 101 as follows:

${101\choose 37}=\frac{101!}{37!\cdot (101-37)!}$

$=\frac{101!}{37!\times 64!}\\\\=\frac{101\times 100\times 99\times....64!}{37!\times 64!}\\\\=5397234129638871133346507775$

Thus, the number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

5 0

3 years ago

Check please :D <br> 12345678901234567890

bagirrra123 [75]

Answer: All but one was right

1. 0 (correct)

2. 34 (correct)

3. 398 (correct)

4. -350 (correct)

5. 20 (correct)

6. 200 (wrong)

7. 48 (correct)

8. -1000(correct)

9. 150 (correct)

10. -55 (correct)

Step-by-step explanation:

(2x5)x(9÷3)+4=10x3+4=30+4=34

4(25x8÷2)+3-5=4(200÷2)+3-5=4x100+3-5=400+3-5=403-5=398

-10x20-30(5)=-200-150=-350

5x10-30=50-30=20

4(50-20÷4)+20=4(50-5)+20=4x45+20=180+20=200

3x4(20÷5)=12x4=48

-20(50x2)+5(200)=-20x100+5x200= -2000+1000=-1000

20x5+70-20=100+70-20=170-20=150

-5+10x(-5)==5+-50=-55

6 0

2 years ago

Read 2 more answers