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MrRa [10]
2 years ago
11

I need to know this now please it’s due tomorrow-

Mathematics
1 answer:
faust18 [17]2 years ago
4 0

Answer:

i only know a few

Step-by-step explanation:

5. 60

6. 80

4. 58

3. 38

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Two mechanics work on a car . The first mechanic worked 10 hours and the second mechanic worked for 15 hours. Together they char
bonufazy [111]

Answer:

110

Step-by-step explanation:

Let x = rate #1 and then 155-x=rate #2.

15x + 5(155-x) = 1225

15x - 5x + 775 - 1225

10x = 450

x = 45, second rate is 110

8 0
3 years ago
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Rachel loves to bake cookies, but she has an old oven that has trouble maintaining a constant temperature. Assume the acceptable
denis-greek [22]

Answer:

3.00

Step-by-step explanation:

USL = 350+18 = 368

z = (USL-Mean)/6*σ = (368-350)/6*σ

σ = 3/0.9999966 = 3.00 (approx)

7 0
3 years ago
Find equation so EASY PLZ HELPPP URGENT WILL GIVE BRAINESD MARK 11+ POINTS
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Answer:

y= -4x+4

Step-by-step explanation:

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4 0
3 years ago
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What is the sum of the exterior angles, one at each vertex, of a polygon with 20 sides?A.20B.360C.180D. We need more information
ale4655 [162]

The measure of an exterior angle in a polygon with n sides is given by:

a_n=\frac{360}{n}

So, for n = 20, we have the measure of the exterior angles of the polygon with 20 sides:

\begin{gathered} a_{20}=\frac{360}{20} \\ a_{20}=18\degree \end{gathered}

Now, to find the sum of all exterior angles, let's multiply the exterior angles by the number of sides of the polygon:

\begin{gathered} S_{20}=a_{20}\cdot n \\ S_{20}=18\cdot20 \\ S_{20}=360\degree \end{gathered}

Therefore the sum is equal to 360°, correct option: B.

(The sum of exterior angles of a polygon with n sides is always equal to 360°)

7 0
1 year ago
25 amigos compraron 21 rifas cada uno cuanta rifas tenemos en total
olganol [36]

Answer:

525

Step-by-step explanation:

25 friends, 21 each. 25*21 is 525.

(25 amigos, comprar 21 rifas. 25*21 es 525) (Rought transaltion)

8 0
3 years ago
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