All categories

3 years ago

Simply 8x squared + 5(7x squared- x) - 2x =

Mathematics

1 answer:

Slav-nsk [51]3 years ago

4 0

Suuuuree,

$8 {x}^{2} + 5(7 {x}^{2} - x) - 2x \\ \\ 8 {x}^{2} + 35 {x}^{2} - 5x - 2x \\ \\ 43 {x}^{2} - 7x$

You might be interested in

HELP ASAP What is the measure of ZDBE? A. 120° B. 45° C. 75° D. 60°

kolezko [41]

B. 45 degrees is the answer

4 0

2 years ago

Read 2 more answers

I need an answer first and correct answer will give brainliest!!!! At summer camp, campers were asked to name their favorite spo

dexar [7]

15/100*x=39
x=39*100/15
x= 260 is the total number of people who were asked

7 0

2 years ago

Read 2 more answers

Convert the angle \theta=\dfrac{8\pi}{9}θ=

Olegator [25]

Answer:

160°

Step-by-step explanation:

-Given the angle in radians as $\theta=\dfrac{8\pi}{9}\ rad$

-We know that $1 \ rad=\frac{180}{\pi}\textdegree$

-Let our angle theta be X

#We therefore equate and cross multiply:

$1\ rad=\frac{180}{\pi}\\\\\frac{8\pi}{9}=x\\\\\therefore X=\frac{180}{\pi}\times \frac{8\pi}{9}\\\\=160\textdegree$

Hence, angle θ is 160°

8 0

2 years ago

A piece of wire measuring 20 feet is attached to a telephone pole as a guy wire. The distance along the ground from the bottom o

dem82 [27]

Answer: Height at which the wire is attached to the pole is 12 feet.

Explanation:

Since we have given that

Length of the wire = 20 feet

Let the height at which wire is attached to the pole be h

and distance along the ground from the bottom of the pole to the end of the wire be x+4

Now, it forms a right angle triangle so, we can apply "Pythagorus theorem".

$H^2=B^2+P^2\\\\20^2=x^2+(x+4)^2\\\\400=x^2+x^2+8x+16\\\\400=2x^2+8x+16\\\\400=2(x^2+4x+8)\\\\200=x^2+4x+8\\\\x^2+4x-192=0\\\\x^2+16x-12x-192=0\\\\x(x+16)-12(x+16)=0\\\\(x+16)(x-12)=0\\\\x=-16\ and\ 12$

But height cant be negative so, height will be 12 feet.

Hence, height at which the wire is attached to the pole is 12 feet.

8 0

3 years ago

Could someone help me please ? :)

Degger [83]

ANSWER = 17.5% of 360 = 63

EXPLANATION:

Find 10% of 360 = 36

Then 5% of 360 = 18

Then 2.5% of 360 = 9

Add them together

so 17.5% of 360 = 63

8 0

2 years ago