3 years ago

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

Mathematics

1 answer:

lubasha [3.4K]3 years ago

6 0

4x+8y=40
0.8*8=6.4
4x+6.4=40
40-6.4=33.6
4x=33.6
33.6\4=8.4
X=8.4

You might be interested in

PLEASE HELP ME IN MATH

maks197457 [2]

Answer:

BC= 23.0km (nearest tenth)

Step-by-step explanation:

Please see the attached picture for full solution.

6 0

3 years ago

Nathan goes to the store and buys 2 shorts and 4 shirts for 70$. He later goes to the same store and buys 3 shorts and 3 shirts

Roman55 [17]

Answer:

Each item of clothing costs $12.50

6 0

3 years ago

The graph of a system of equations will intersect at more than one point?

Bess [88]

I believe the answer is sometimes

6 0

3 years ago

Find the x-intercepts for the parabola defined

Ulleksa [173]

Answer:

(- 2, 0 ), (1, 0 )

Step-by-step explanation:

Given

y = 2x² + 2x - 4

To find the x- intercepts let y = 0, that is

2x² + 2x - 4 = 0 ← divide through by 2

x² + x - 2 = 0 ← in standard form

(x + 2)(x - 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 2 = 0 ⇒ x = - 2

x - 1 = 0 ⇒ x = 1

Thus x- intercepts are (- 2, 0) and (1, 0)

5 0

3 years ago

Cups are sold 6 to a package and plates are sold 8 to a package. If you want to have the same number of each item for a party

beks73 [17]

Answer:

Step-by-step explanation:

If you want to find the least amount of packages, you'll have to find what multiple they have in common.

One way to find this is 6x8, which is 48, but that isn't always the lowest.

Here are the first few multiples of six: 6, 12, 18, (24), 30, 36, 42, and 48.

Here are the first few multiples of eight: 8, 16, (24), 32, 40, 48, 56, and64

3 0

3 years ago