4 years ago

(7x+3)-(2x+1) how would you subtract this

1 answer:

7 0

First re-write the problem and distribute the negative... 7x+3 -2x-1.
Then combine like terms as so... 7x -2x= 5x and 3 - 1= 2.
Re-write once more... 5x+2.

You might be interested in

4% of a number is what fraction of that number?

Brut [27]

Answer:

1/25 or 4/100

Step-by-step explanation:

5 0

3 years ago

a magnifying glass makes objects appear 2.54 times largers than their actual size. How large does a 6-millimeter seed appear in

Mnenie [13.5K]

Answer:

15.24 millimeters

Step-by-step explanation:

6 * 2.54 = 15.24 mm.

7 0

2 years ago

Read 2 more answers

What is 16.5 as a percent<br> and NO it is not 165% or 1650% none of that please

sveticcg [70]

I could be wrong but .165% would be my guess it it’s not 165% or 1650%

6 0

3 years ago

If an airplane in a 1 in. : 4 ft. scale drawing is 5 in. long, how long is the actual airplane? Use proportions to solve the pro

Lunna [17]

Answer:

20ft

Step-by-step explanation:

20ft is the answer because you would do 4 x 5 = 20, since the scale factor is 1in : 4ft

Hope this helped :)

4 0

3 years ago

Answer question 8,9 and 10 with full details.

Lelechka [254]

Answer:

See Explanation

Step-by-step explanation:

8. (1)

Area of trapezoid = 1/2(sum of || sides) *perpendicular distance

36 =1/2(x+ y) * 6

36 = ((x + y)*3

36/3 = x + y

12 = x + y

x + y = 12.... (1)

8(2)

It is given that:

x = 2y....(2)

From equations (1) & (2)

2y + y = 12

3y = 12

y = 12/3

y = 4

From equation (2)

x = 2y = 2*4

x = 8

Area of square = 1 square m

Side of square = 1 m

Area of circle = 1 square m

$\pi {r}^{2} = 1 \\ {r}^{2} = \frac{1}{\pi} \\ r = \frac{1}{ \sqrt{\pi} } \\ c = 2\pi \: r \\ c = 2\pi \times \frac{1}{ \sqrt{\pi} } \\ c = 2 \sqrt{\pi} \\ c = 2 \sqrt{3.14} \\ c = 2 \times 1.77200451 \\ c = 3.54400902 \\ c = 3.544 \\ difference = 3.544 - 1 = 2.544 \\difference \approx \: 2.54$

4 0

3 years ago