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Slav-nsk [51]
3 years ago
12

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question.

There are 15 questions on the test and the students have been given 55 minutes to complete it. A Table titled Test Time, showing Number of Questions, Time per Item in minutes, and Total Time in minutes. The first row shows Multiple Choice, with m, 3, and 3 m. The second row shows Free Response, with 15 minus m, 8, and x. The third row shows Total, with 15, blank, and 55. Which value could replace x in the table? 7 – m 23 – m 8(15 – m) 8(15) – m

Mathematics
2 answers:
scoundrel [369]3 years ago
7 0

Answer:

8(15 – m)

Step-by-step explanation:

Just Did The Test

zloy xaker [14]3 years ago
3 0

Answer:

<h2>8(15-m)</h2>

Step-by-step explanation:

In the table, <em>x </em> represents the total time students take to respond free-response question. So, the replacement of the variable must be the product between the number of free-response questions and the time per questions students take.

Number of free-response questions: 15-m

Time per Item (minutes): 8

Therefore the product would be: 8(15-m), which is the expression that must replace <em>x.</em>

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anzhelika [568]
Volume = length x width x height

Thus, you need to find the cubic root of 500....the number that when multiplied by itself three times = 500,

There are different ways to write this. \sqrt[3]{500}
= \sqrt[3]{125 * 4}
= 5\sqrt[3]{4}

You can also show it as a decimal using a calculator = 7.94
8 0
3 years ago
An article estimates, with 90% confidence, that the proportion of elementary school teachers who are female is 82%. The article
GREYUIT [131]

Answer:   (80% , 85%)

Step-by-step explanation:

We know that, confidence interval for population proportion is given by :-

(p-E , p+E)

, where p = sample proportion , E = Margin of error.

Given : Proportion of elementary school teachers who are female = 82%.

The article also states the maximum error of their estimate = 3%.

Then, the 90% confidence interval for the proportion of elementary school teachers who are female will be :

(82%-2% , 82%+3%)

= (80% , 85%)

Hence, the resulting 90% confidence interval for the proportion of elementary school teachers who are female = (80% , 85%)

5 0
3 years ago
Please help! BRAINLIEST to correct answer!
Volgvan

Answer:

A

Step-by-step explanation:

u can just test them out

6 0
2 years ago
Read 2 more answers
P= -4b^2+6b-9<br> Q= 7b^2-2b-5<br> P-Q=
insens350 [35]

Answer:

P - Q = - 11b² + 8b - 4

Step-by-step explanation:

P - Q

= - 4b² + 6b - 9 - (7b² - 2b - 5) ← distribute parenthesis by - 1

= - 4b² + 6b - 9 - 7b² + 2b + 5 ← collect like terms

= - 11b² + 8b - 4

5 0
3 years ago
3. If 2p + q = 11 and p + 2q = 13, then<br> p+q=<br> (A) 6<br> (B) 8<br> (C) 9<br> (D) 12<br> (E) 18
frozen [14]
Answer:
(C) 9

Step by step:
11-2=9 and it’s asking for both p and q combined so no need to worry about that
8 0
3 years ago
Read 2 more answers
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