All categories

2 years ago

Simplify (3x + 5) + (2x - 9) - (4x+3). A.) X-7 B.) -X-7 C.) 9x1 D) 9x1

Mathematics

2 answers:

erica [24]2 years ago

8 0

Answer:

x -7

Step-by-step explanation:

(3x + 5) + (2x - 9) - (4x+3)

3x + 5 + 2x - 9 -4x -3

x -7

lianna [129]2 years ago

3 0

(3x + 5) + (2x - 9) - (4x+3)

Pretend that there is a -1 in front of the third bracket

-1(4x+3)

= -4x-3

3x+5+2x-9-4x-3

3x+2x-4x+5-9-3 ( rearranging)

5x-4x-4-3

x-7

Answer: A.) X-7

You might be interested in

G(x) = 15 – 4x<br> h(x) = x +8<br> Write g(h(x)) as an expression in terms of 2.

Sergeu [11.5K]

For this case we have the following functions:

$g (x) = 15-4x\\h (x) = x + 8$

We must find $g (h (x))$ when $x = 2$ .

So:

$g (h (x)) = 15-4 (x + 8) =$

We apply distributive property to the terms within parentheses taking into account that:

$- * + = -\\15-4x-32 =$

We add similar terms taking into account that different signs are subtracted and the sign of the major is placed:

$-17-4x$

Thus, we have to:

$g (h (x)) = - 17-4x$

Then, with x = 2:

$g (h (2)) = - 17-4 (2) = - 17-8 = -25$

Equal signs are added and the same sign is placed.

Answer:

$g (h (2)) = - 25$

3 0

3 years ago

David made

Zina [86]

Hi there

You made per hour
342÷18
=$19
You made for 8 hours
$19×8
=$152

Hope it helps

5 0

2 years ago

Someone please help me I’ll give out brainliest please dont answer if you don’t know

natta225 [31]

Answer:

$12.5(x + 20) = 460 \\ x + 20 = 460 \div 12.5 \\ x + 20 = 36.8 \\ x = 36.8 - 20 \\ x = 16.8$

Hence, 16.8 miles is your answer

3 0

3 years ago

Yoko is going for a walk. She takes 5 hours to walk 12.5 miles. What is her speed?

Dennis_Churaev [7]

Answer:

2.5mph (miles per hour)

Step-by-step explanation:

Simple, 12.5/5 = 2.5 mph (miles per hour)

8 0

2 years ago

Evaluate the function f(x) = sec(x - pi/2) for x = 0.

Anvisha [2.4K]

$\sec\left(0-\dfrac{\pi}{2}\right)=\sec\left(-\dfrac{\pi}{2}\right)=\dfrac{1}{\cos \left(-\dfrac{\pi}{2}\right)}=\dfrac{1}{0}$

So, the function $f(x)$ for $x=0$ is undefined.

5 0

2 years ago