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pav-90 [236]
3 years ago
8

Please help with this question I'm having trouble 4(2x+3)+6x+9=14x+21

Mathematics
1 answer:
Mars2501 [29]3 years ago
8 0

Answer:

0=0

Step-by-step explanation:

4(2x+3)+6x+9=14x+21

8x+12+6x+9-14x-21=0

14x-14x+21-21=0

0=0

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Please help me with number 12 thank you
uysha [10]
So first you should find the area of the rectangle on the bottom.

18x12=216

Then find the area of the trapezoid. I believe the formula is A = a+b/2(h).

So do 10 + 18 = 28, divide by 2, which is 14, then multiply by the height, 6, and you get 84.

Now you add the area of both shapes together, 216+84=300.

300 ft is your answer.

If you have questions lmk
8 0
4 years ago
Henry and Gavin are marking exam papers. Each set takes Henry 36 minutes and Gavin 1 hour. Express the times Henry and Gavin tak
RUDIKE [14]

The ratio of time taken by Henry to time taken by Gavin is 3:5

Step-by-step explanation:

Time taken by Henry for each set = 36 minutes

Time taken by Gavin for each set = 1 hour

We will convert Gavin's time into minutes.

Time taken by Gavin for each set = 60 minutes

Ratio;

Time taken by Henry : Time taken by Gavin

36:60

Dividing by 6

\frac{36}{6}:\frac{60}{6}\\6:10

Dividing by 2

\frac{6}{2}:\frac{10}{2}\\3:5

The ratio of time taken by Henry to time taken by Gavin is 3:5

Keywords: ratio, division

Learn more about ratios at:

  • brainly.com/question/10382470
  • brainly.com/question/10382722

#LearnwithBrainly

6 0
4 years ago
2x<6 solve the inequality
nataly862011 [7]

Answer: x<3

Step-by-step explanation:

4 0
3 years ago
What is the midpoint of the line segment with endpoints (-2, 6) and (8, -3)?
777dan777 [17]

Answer: D) (3, 1.5)

Step-by-step explanation:

5 0
3 years ago
The ratio of Shauntay's cards to Jessica's cards is 5 to 3. After Shauntay gives Jessica 12 of her cards, both girls have the sa
Zepler [3.9K]

Answer:

They have 48 cards.

Step-by-step explanation:

let s be the number of Shauntay's cards and j be the number of Jessica's cards.

The ratio of Shauntay's cards to Jessica's cards is 5 to 3, then

(1) \frac{s}{j} =\frac{5}{3}

After Shauntay gives Jessica 12 of her cards, both girls have the same number of cards, then

(2) s-12 =j+12.

From (2), we get s= j+24. If we put j+24 instead of s in (1) we get:

\frac{j+24}{j} =\frac{5}{3}

3×j+24×3 = 5×j  From this we get;

2×j=72  and j=36

After Shauntay gives Jessica 12 of her cards, Shauntay and Jessica would have 48 cards.

4 0
3 years ago
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