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3 years ago

Question below can you please answer the question ASAP

Mathematics

2 answers:

SashulF [63]3 years ago

7 0

Answer:

im pretty sure its c

bearhunter [10]3 years ago

7 0

A. 41°
(132°-9)÷3=41°

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Simplify:9-1÷2÷27^2÷3

sammy [17]

First let's calculate the exponents.

$27^2 : 729 = 9-1\div \:2\div \:729\div \:3$

Now we should multiply and divide.

$1\div2\div729\div3:\frac{1}{4374} = 9-\frac{1}{4374}$

Now we should add and subtract.

$9-\frac{1}{4374} :\frac{39365}{4374} = \frac{39365}{4374}$

Convert the improper fractions into mixed numbers.

$8\frac{4373}{4374}$

Answer :

$8\frac{4373}{4374}$

5 0

3 years ago

A 13-foot piece of string is cut into two pieces so that the longer piece is 4 feet longer than twice the shorter piece. Find t

Yuri [45]

The answer is 10 and 3
6/2 = 3
6 + 4 = 10
10 + 3
it said one piece was twice the other plus 4.

4 0

3 years ago

Karens batting average is 0.444.she was at bat 45 times. how many hits did she get

alexgriva [62]

Answer:

A batting average is simply the ratio of hits/at-bats. So, if Karen were up to bat 1,000 times and she got a hit 444 times, that makes her batting average 444/1,000 = .444.

The good news is you can multiply this ratio by number of at bats to get the number of hits.

So, 45 hits x .444 = your answer.

Hope that helps.

4 0

4 years ago

An agronomist hopes that a new fertilizer she has developed will enable grape growers to increase the yield of each grapevine by

Phoenix [80]

Answer:

Yes. Fertilization increases grape yields by more than 5 pounds.

Step-by-step explanation:

Let f-fertilized and o-old(unfertilized)

#First, we use our data to calculate the standard error:

$SE(\bar y_f-\bar y_o)=\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}\\\\=\sqrt{\frac{3.7^2}{44}+\frac{3.4^2}{47}}\\\\=0.7464$

#State both null and alternative hypothesis:

$H_o:\mu_f-\mu_o=0\\\\H_A=\mu_f-\mu_o>0$

#We determine our degrees of freedom as 87.02(using R), we now compute the t-value as:

$t=\frac{\bar y_f-\bar y_o}{\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}}\\\\\\t=\frac{53.4-52.1}{\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}}\\\\\\t=\frac{1.3}{0.7464}\\\\t=1.7417\\\\P=P(t_{87.0>1.7417}=1-0.9575=0.0.0425$

Since, the p-value is low, we Reject the null hypothesis. The is enough evidence suggesting that grape yields increase by more than 5 pounds than mean yields of unfertilized grapes.

8 0

4 years ago

A middle school took all of its sixth grade students on a field trip to see a play at a theater that has 2000 seats. The student

almond37 [142]

Answer:

1300 middle school students.

Step-by-step explanation:

We can turn the words into this expression:

2000 x 65/100

And that expression simplifies to 1300, so 1300 students.

3 0

3 years ago