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3 years ago

Noni is looking for the sum of a number, n, and 21.

2 answers:

7 0

To determine what the value, is simply convert this word expression into an algebraic one.

Sum of n and 21 = n + 21

To find out the value, plug in n = 8.

N + 21
8 + 21
29.

Noni is looking for the value of 29.

LekaFEV [45]3 years ago

3 0

Answer:

if n = 8 then the answer is 29

Step-by-step explanation:

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Find the sum of 5(-3.4k -7) + (3k +12) and please show work

pishuonlain [190]

$5(-3.4k-7)+(3k+12)=\ \ \ \ | omiting\ brackets\\\\
-17k-35+3k+12=\\\\
-14k-23\\\\
Solution\ is\ -14k-23$

5 0

3 years ago

1. The sum of three times k and eight is eleven

ludmilkaskok [199]

Answer:

k=1

Step-by-step explanation:

$3k + 8 = 11\\$

Subtract 8 from both sides

$3k = 3$

Divide

$\frac{3k}{3} = \frac{3}{3}$

Simplify

$k =1$

4 0

3 years ago

Read 2 more answers

Whoever answers the questions correctly gets brainlist

andrew11 [14]

Answer:

2. B

3. B

4. 2(7k+5h)

5. $325

Step-by-step explanation:

2) "X decreased by the sum of 2x + 5" Decreased means to be lowered, so that means this problem has subtraction in it. It also says x is being decreased BY the sum of 2x + 5 so that means 2x + 5 needs to be solved, which calls for parentheses. B best fits the description.

3) It is B because if you distribute the 8 to 2a and 3b, you'll get 16a and 24b, which is the given expression.

4) The given expression is 10h + 14k and in the equivalent expression, you are given 5h. To get from 10 to 5, you must divide by 2. This tells you that 2 is being distributed, so you put 2 before the parentheses. Since you divided 10 by 2, you want to do the same to 14, which is 7. Therefore, it is 2(7k+5h).

5) You are given the hourly charge, which is $25. This means that they charge $25 per hour/for every hour. You want to find the cost for 13 hours, so you multiply the hourly charge by 13 hours. 25 x 13 = 325.

7 0

3 years ago

Jessie's school has 570 students. Thirty percent of the students are eighth-graders. One-third of eighth-graders walk to school.

Paraphin [41]

Answer:

Step-by-step explanation:

10% of 570 = 57 (dividing by 10). Times that by 3, which is 171. Now divide 171 by 3, equals 57 (the answer).

6 0

3 years ago

[calculus] the distance from the point (6, -4) to the circle <img src="https://tex.z-dn.net/?f=x%5E2%2By%5E2-8y%3D0" id="TexForm

stealth61 [152]

Answer:

Option C.

The distance from the point to the circle is 6 units

Step-by-step explanation:

we know that

The distance between the circle and the point will be the difference of the distance of the point from the center of circle and the radius of the circle

step 1

Find the center and radius of the circle

we have

$x^{2} +y^{2}-8y=0$