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2 years ago

Please help if you know geometry I will mark brainliest

Mathematics

1 answer:

algol [13]2 years ago

7 0

Answer:

Step-by-step explanation:

A clock in a hour makes a rotation of 360 degrees. So this emans each minute will make a rotation of 6 degrees. 12:12 to 12:50 is 38 degrees So

$38 \times 6 = 228$

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Which multiplication equation can be used to solve 1/6 ÷ 5?

Anna [14]

Answer:

1/6 x 1/5 = multiplication equation

8 0

2 years ago

Part B: Solve 2a − 5d = 30 for d. Show your work. (6 points)

stich3 [128]

<span>Given Equation: 2a − 5d = 30

Solution:

2a - 5d = 30

-5d = 30 -2a

d = ( 30 - 2a )/ (-5)

= -6 + (2a/5)

= (2a/5) - 6

I hope this helps</span>

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3 years ago

Marisol is buying granola bars for snacks at a camp. There are 46 campers and Marisol wants each camper to have at least 3 grano

tekilochka [14]

He needs 138 bars to feed them.if he bought 14 packs of 10 granula bars he would have 140 thus 2 will be left. so the answer is A

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3 years ago

Lonnie places 950$ in a savings account that earns 5.75% simple interest. find the total amount in the account after four years

Xelga [282]

The answer is $218.50¢.

7 0

3 years ago

The shear strength of each of ten test spot welds is determined, yielding the following data (psi).

Mumz [18]

Answer:

a) Mean = 382.3 psi

Standard deviation = 20.8 psi

b) 392.7 psi

c) P(X<400)=0.8026

Step-by-step explanation:

a) The population mean can be estimated as equal to the mean of the sample, and the population standard deviation can be estimated from the sample standard deviation:

$M=\frac{1}{n}\sum x_i=\frac{1}{10}(389+405+409+367+358+415+376+375+367+362)\\\\M=\frac{1}{10}(3823)=382.3\\\\\mu\approx M=382.3$

$s=\sqrt{\frac{1}{n-1}\sum (x_i-M)^2}=\sqrt{\frac{1}{10-1}(389-382.3)^2+...+(362-383.2)^2}\\\\\\s=\sqrt{\frac{1}{9}(3906.1)}=\sqrt{434}=20.8\\\\\\\sigma\approx s=20.8$

b) We start by searching for the z-value for the 95th percentile. This value is

z=1.645:

$P(z$

Then, the strength value below which 95% of all welds will have their strengths is:

$X=\mu+z\cdot \sigma/\sqrt{n}=382.3+1.645*20.8/\sqrt{10}\\\\X=382.3+32.9/3.2=382.3+10.4\\\\X=392.7$

c) We calculate the probability of X being equal or less than 400 as:

$z=(X-\mu)/\sigma=(400-382.3)/20.8=17.7/20.8=0.851\\\\\\P(X\leq400)=P(z$

6 0

3 years ago