If you have an 81 for your 9 weeks grade but make a 70 on your exam whats going to be your final grade?

Answers

Answer 1

Answer: To do this you need the mean.
(81*9+70)/10 that is the mean equation.
Solve.
(799)/10
79.9
79.9% Will be your grade or a C

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6,282 in scientific notation would be _____?

Answers

Answer:

$6.282* 10^3$

Step-by-step explanation:

In the scientific notation we write a very large number or very small number as the product of a number between 0 to 9 and an exponent of 10,

Now, when we make a number between 0 to 9 by shifting decimal to left side then the power of 10 is positive number of shifting,

Here, the given number,

6,282

By the above explanation,

the scientific notation of 6,282 is $6.282* 10^3$

The scientific notation of 6,282 is 6.282 x 10³

Hope I helped!! :-)

John has two open packs of paper. One pack has 31 pieces of paper. The second pack has 45 pieces of paper. How many pieces of paper does John have all together?

Answers

Hey, Taelyr123!
Pack 1=31
Pack 2=45
31+45=76 pieces of paper!
I hope this helps:)

Answer:

Step-by-step explanation:

76 is correct. "All together" indicates addition.

The farmer's market is selling 3 pounds of onions for $2. Choose the equation that canbe used to find y, the price for 15 pounds of onions.

Answers

Answer:

Step-by-step explanation:

Answer:

15/3 x 2

Step-by-step explanation:

I hope this helps

To practice for a competition, Genevieve swam 710 meters in the pool each day for 4 weeks. How many kilometers did Genevieve swim in those 4 weeks? please hurry, I hate zearn

Answers

Answer: Genevieve swam approximately 19.88 kilometers

Step-by-step explanation:

You have just purchased a 6-lb bag of apples for $4.80 at a local produce stand. How much would you expect to pay for a 10-lb bag of apples?

Answers

First, find out how much money it cost per 1 lb of apples.

Divide $4.8/ 6 lbs

$0.8/ 1 lbs

Multiply amount per pound by cost

0.8 * 10 = 8

$8.00 for 10 lb bag of apples.

A chocolate factory produces mints that weigh 10 grams apiece. The standard deviation of the weight of a box of 10 mints is 3 grams. You buy a box of mints that weighs 95 grams. What is your confidence that the box you bought did not come from the factory?A 90%
B 95%
C 10%
D 5%

Answers

Answer: Option 'A' is correct.

Step-by-step explanation:

Since we have given that

Population Mean weight ( $\mu$ )= 10 grams a piece

Standard deviation of the weight of a box = 3 grams

Number of mints = 10

We need to buy a box of mints that weighs 95 grams.

Sample mean is given by

$x=(95)/(10)=9.5\ grams$

First we find out the standard error which is given by

$s=(\sigma)/(√(n))\n\n=(3)/(√(10))\n\n=0.94868$

Since it is normal distribution, so, we will find z-score.

$z=(x-\mu)/(s)\n\nz=(9.5-10)/(0.94868)\n\nz=-0.527\n\nz=-0.53$

The area to the left of a z-score of -0.53 = 0.29805.

So, it may be 90% or 95 % confidence.

For 95% confidence level,

$\alpha=(1-0.95)/(2)=0.025$

Similarly,

For 90% confidence level,

$\alpha=(1-0.90)/(2)=0.05$

We have little confidence that the box he bought did not come from the factory. that is much smaller than 0.05.

So, it is safe to assume 90% confidence.

So, we will get 90% confidence, critical value = 1.645

Margin of error is given by

$(Standard\ deviation)* (critical\ value)\n\n=0.94868* 1.645\n\n=1.56$

So, confidence interval will be

(10-1.56,10+1.56)

=(8.44,11.56)

Hence, Option 'A' is correct.

The right answer for the question that is being asked and shown above is that: "C 10%." A chocolate factory produces mints that weigh 10 grams apiece. The standard deviation of the weight of a box of 10 mints is 3 grams. You buy a box of mints that weighs 95 grams.

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