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2 years ago

Write the following as an algebraic expression. Simplify if possible. Add 9x - 8 to 4x - 1.

Mathematics

2 answers:

Naddika [18.5K]2 years ago

7 0

Answer:

13x -9

Step-by-step explanation:

4x-1 + 9x-8

Combine like terms

4x +9x -1-8

13x -9

riadik2000 [5.3K]2 years ago

5 0

Answer:

9x+−8+4x+−1

(9x+4x)+(−8+−1)

13x+−9

Step-by-step explanation:

so sorry if wrong

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What is another solution of the equation x+y=7?

masya89 [10]

Hello.

x=3, y=4
x=-2, y=9
Set x equal to anything, then isolate y to get the other number.

Have a nice day

8 0

2 years ago

Really really need this answer. Please help!

scZoUnD [109]

Use the cosine function.

cos x = 2/12
cos x = 0.167

use the inverse of cosine:

x = 80.405

The answer is C.

Hope this helps :)

4 0

3 years ago

The area of a rectangle is 42 ft squared, and the length of the rectangle is 5 ft more than twice the width. Find the dimensions

stira [4]

Answer:

<h3>Length = 12 ft</h3>

Width = $\frac{7}{2} ft$

Step-by-step explanation:

Given,

Area of rectangle = $42 \: {ft}^{2}$

Width = X

Length = 2x + 5

Now,

$x(2x + 5) = 42$

$2 {x}^{2} + 5x = 42$

$2 {x}^{2} + 5x - 42 = 0$

$2 {x}^{2} + 12x - 7x - 42 = 0$

$2x(x + 6) - 7(x + 6) = 0$

$(2x - 7)(x + 6) = 0$

Either

$2x - 7 = 0$

$2x = 0 + 7$

$2x = 7$

$x = \frac{7}{2}$

Or,

$x + 6 = 0$

$x = 0 - 6$

$x = - 6$

Negative value can't be taken.

So, width = $\frac{7}{2} ft$

Again,

Finding the value of length,

Length = $2x + 5$

$2 \times \frac{7}{2} + 5$

$7 + 5$

$12$

Length = 12 ft

7 0

3 years ago

Read 2 more answers

Which of the following is equal to the expression listed below?

Novay_Z [31]

Answer:

Step-by-step explanation:

9(5 + 2)

the answer is D

3 0

3 years ago

What is the value of x?<br><br><br> Pls hurry!!!

eduard

Answer:

C. 120

Step-by-step explanation:

Hope it helps!

4 0

2 years ago