2 years ago

What is the value of x in the equation 4x + 8y = 40, when y = 0.8?

1 answer:

6 0

$4x+8y=40 \ |:4 \\\\ x+2y=10 \\\\ x+2*0.8=10 \\\\ x+1.6=10 \\\\ x=10-1.6 \\\\ \boxed{x= 8.4}$

You might be interested in

dusya [7]

$500, 40 divided by 8=5, 5x100= 500

6 0

2 years ago

Lelu [443]

Answer:

Step-by-step explanation:

${ {a}^{b} }^{c} = {a}^{bc } \\ in \: this \: case \\ { ({8}^{n}) }^{3} = {8}^{3n} \\ \\ {8}^{3n} = {8}^{6 } \\ 3n = 6 \\ n = \frac{6}{3} = 2$

6 0

2 years ago

Alla [95]

It is equal because every 2000 pounds is 1 ton and 18000lb divided by 2000 equals 9.

5 0

2 years ago

butalik [34]

Answer:

Simple column method

Step-by-step explanation:

x 13

110

143

3 0

3 years ago

KiRa [710]

Answer:

y = - 7

Step-by-step explanation:

The equation of a horizontal line is

y = c

where c is the value of the y- coordinates the line passes through.

The line passes through (5, - 7) with y- coordinate - 7, thus

y = - 7 ← equation of horizontal line

8 0

2 years ago