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3 years ago

Which algebraic expression represents “the sum of a number and 9”?

Mathematics

1 answer:

Kipish [7]3 years ago

4 0

Answer:

9+n or n+9

Step-by-step explanation:

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Sixty-four percent of the students correctly described the process of photosynthesis. If 63 students did not correctly describe

olganol [36]

Answer:

Number of students who correctly describe the process = 112 students.

Step-by-step explanation:

From the information provided in the question;

64% correctly described the process of photosynthesis.

63 students didn't describe correctly the process of photosynthesis.

We are to find the number of students that did correctly describe the process of photosynthesis.

First of all we need to find the total number of students.Lets represent this value to be x

percentage of students who incorrectly describe the process = (100-64)%

=36%

$\frac{36}{100}*x =63$

x= 63*100/36

x=175 students.

FIRST METHOD

Number of students who correctly describe the process = $\frac{64}{100}*total number of students$

= $\frac{64}{100}*175$

Number of students that correctly describe the process = 112 students.

SECOND METHOD

Number of students who correctly describe the process = Total number of students- number of students who didn't correctly describe the process

Number of students who correctly describe the process = 175-63

Number of students who correctly describe the process = 112 students.

8 0

3 years ago

Stacy wrote a number. In the number, the value of the 4 is 10 times the value of

Nikitich [7]

400
The 4 in 1745 is in the 10’s place
so that means the 4 is 40
If the value of the 4 is time times greater that means it would be 400
I’m guessing?

5 0

4 years ago

What is a sample space

Gnoma [55]

The range of values of a random variable

8 0

3 years ago

The length of a rectangle is 3 yd less than twice the width, and the area of the rectangle is 44 yd^2 Find the dimensions of the

vovangra [49]

Answer:

width: 5.5 yd; length: 8 yd

Step-by-step explanation:

Let w represent the width of the rectangle in yards. Then 2w-3 is the length and the area is the product of length and width:

w(2w-3) = 44

2w^2 -3w -44 = 0 . . . . put the equation into standard form

(w+4)(2w -11) = 0 . . . . . factor the equation

w = -4 or 11/2 . . . . . . . . the negative solution is extraneous

Then the length is 2·(11/2) -3 = 8.

The width of the rectangle is 5.5 yards; the length is 8 yards.

5 0

3 years ago

Select the correct answer.

Lelechka [254]

Answer:

the answer is B.

Step-by-step explanation:

W= median is 58

R= median is 81

81-58=23

7 0

3 years ago