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3 years ago

Which expression is equivalent to the given polynomial expression?

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

8 0

Answer:

-4 a^2 - 3 b

Step-by-step explanation:

You might be interested in

Consider circle H below.

hram777 [196]

We have been given a circle H, in which length of arc XY is 78 miles and measure of arc XY is 70 degrees. We are asked to find the radius of circle.

We will use arc length formula to solve our given problem.

$\text{Arc length}=2\pi r\cdot \frac{\theta}{360^{\circ}}$ , where,

r = Radius of circle,

$\theta$ = Central angle corresponding to arc.

We know that the measure of central angle that corresponds to arc XY will be equal to measure of arc XY.

$78=2\cdot 3.14\cdot r\cdot \frac{70^{\circ}}{360^{\circ}}$

$78=2\cdot 3.14\cdot r\cdot \frac{7}{36}$

$78= 3.14\cdot r\cdot \frac{7}{18}$

$78= r\cdot \frac{21.98}{18}$

$r\cdot \frac{21.98}{18}=78$

$r\cdot \frac{21.98}{18}\cdot \frac{18}{21.98}=78\cdot \frac{18}{21.98}$

$r=63.8762511373$

Upon rounding to nearest hundredth, we will get:

$r\approx 63.88$

Therefore, the radius of circle H is approximately 63.88 miles.

7 0

4 years ago

John ordered three lobsters.the fist one weighed 3.2 pounds,the second weighted 1.75 pounds,the third 1.9 pounds what is the tot

Nadusha1986 [10]

The total weight is <u>6.85</u> pounds.

4 0

3 years ago

3x + 2 = x + 4 ( x + 2 )

Step2247 [10]

Answer:

Step-by-step explanation:

$3x+2=x+4(x+2)\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\3x+2=x+(4)(x)+(4)(2)\\\\3x+2=x+4x+8\qquad\text{combine like terms}\\\\3x+2=(x+4x)+8\\\\3x+2=5x+8\qquad\text{subtract 2 from both sides}\\\\3x+2-2=5x+8-2\\\\3x=5x+6\qquad\text{subtract}\ 5x\ \text{from both sides}\\\\3x-5x=5x-5x+6\\\\-2x=6\qquad\text{divide both sides by (-2)}\\\\\dfrac{-2x}{-2}=\dfrac{6}{-2}\\\\x=-3$

5 0

3 years ago

PLEASE HELP ME! ASAP

Leokris [45]

Answer:

I think the answer is 111 degrees

Step-by-step explanation:

you add 19 plus 50 and you get 69

every triangle equals 180 degrees

so then you subtract 180 to 69 and get 111

8 0

3 years ago

A bicycle shop advertised all mountain bikes priced at a 1/3 discount. If the original cost of the bikes is $327, what is the ne

nataly862011 [7]

Answer- B

Explanation- 327 divided by 3 would be 109 and a 109 + 109 would equal 218 and 218 would be 2/3 of 327

3 0

3 years ago