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3 years ago

What are the solutions to 2x+7X=4? select all that aply

Mathematics

1 answer:

Masja [62]3 years ago

8 0

Answer:

x=4/9, one solution

Step-by-step explanation:

Given: 2x+7x=4

Combine like terms: 9x=4

Divide by 9 on both sides to isolate the variable x: x=4/9

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A rectangular wall has length 3 less than 4 times the width . I wish to put a silver line along the corners of the wall. The lin

Thepotemich [5.8K]

Answer:

Step-by-step explanation:

Let width = w units

Length = 4w - 3

Cost for lining corners of wall = $ 18.50

Perimeter of the wall = 18.50/0.25 = 74 ft

2*(length +width ) = 74

2*(4w - 3 + w) =74

2*(5w - 3) =74

10w - 6 = 74 {Add 6 to both sides}

10w - 6 + 6 = 74 + 6

10w = 80

Divide both sides by 10

10w/10 = 80/10

w = 8 ft

Length = 4w - 3 = 4*8 - 3 = 32 - 3

Length = 29 ft

Area of the wall = length * width

= 29 * 8

= 232 square ft

Cost of painting the wall per square feet = 20 cents = 0.20

Cost of painting 232 square feet = 232 * 0.20

= $ 46.40

4 0

3 years ago

Write a real world situation that could be represented by x+20>50

Korolek [52]

Answer:

will have a trillionare by that time

Step-by-step explanation:

3 0

3 years ago

The angles measures x and 4x are complementary angles. Which is the value of x?

Hitman42 [59]

Answer:

The angles measures x and 4x are complementary angles. The value of x is 36 degrees

Solution:

Given, two angles are x and 4x

We have to find the value of above given x

We are also given that, given two angles are complementary angles for each other

So, we know that, sum of any two complementary angles will always be equal to 180 degrees

Then, in the problem given,

$x+4 x=180 \rightarrow 5 x=180 \rightarrow x=\frac{180}{5} \rightarrow x=36$

Hence the angles measures x and 4x are complementary angles. The value of x is 36 degrees

3 0

3 years ago

Read 2 more answers

If you invested $2000 in an account that paid 8% annual interest compounded quarterly, how much would the account be worth in 10

Morgarella [4.7K]

Answer:

4,317.85

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Please solve for the triangle thank you

Mazyrski [523]

I think its 11250 I'm so sorry if that's wrong bc I'm new at this

8 0

3 years ago