3 years ago

4d + 7e = 68 -4d - 6e = -72 QUICK

Mathematics

1 answer:

Alexxx [7]3 years ago

6 0

Step-by-step explanation:

by adding :

e=_4

d=24.....

You might be interested in

On a map, 1 inch equals 20 miles. Two cities are 8 inches apart on the map. What is the actual distance between the cities?

8_murik_8 [283]

If 1 inch equals 20miles then 8 inches equals 20 x 8 = 160 miles.

6 0

3 years ago

Read 2 more answers

Please help me with this

Simora [160]

Answer: A and B
Explanation: If you draw the graph out it crosses the points (1,2) and (-1,-2) and those are points A and B

3 0

3 years ago

GaryK [48]

Answer:

$B_2=4\pi r^2$

see the explanation

Step-by-step explanation:

we know that

The area of the base of a cylinder is given by the formula

$B=\pi r^{2}$

where

r is the radius of the circular base

If the radius is doubled

then

$r=2r$

The new base area is

$B_2=\pi (2r)^{2}$

$B_2=4\pi r^2$

$B_2=4B$

therefore

The new area of the base is 4 times the area of the original base

7 0

3 years ago

What’s the answer to six plus negative 3

Alik [6]

6 + (-3) would be the same as just saying 6-3 which would be equal to positive 3

6 0

3 years ago

The CD cost $16.50 before tax what is the total cost after a 7% sales tax is added

Black_prince [1.1K]

Answer: 17.65

Step-by-step explanation:

You turn 7% into a decimal or 0.07 then you multiply it by 16.50 you get 1.15 then you add it then you get 17.65.

8 0

3 years ago