1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inessss [21]
2 years ago
15

Which is a factor of 2x^2+8x-90

Mathematics
1 answer:
raketka [301]2 years ago
5 0

Answer:

2(x-5)(x+9)

Step-by-step explanation:

1) divide whole thing by 2 you get  x^2+4x-45

2) from there you can factor it out to (x-5)(x+9)

3) Add the 2 back in on the front

You might be interested in
Iq scores are normally distributed with a mean of 100 and a standard deviation of 15 what is the probability that a randomly sel
a_sh-v [17]
So we are given the mean and the s.d.. The mean is 100 and the sd is 15 and we are trying the select a random person who has an I.Q. of over 126. So our first step is to use our z-score equation:

z = x - mean/s.d.

where x is our I.Q. we are looking for

So we plug in our numbers and we get:

126-100/15 = 1.73333

Next we look at our z-score table for our P-value and I got 0.9582

Since we are looking for a person who has an I.Q. higher than 126, we do 1 - P. So we get

1 - 0.9582 = 0.0418

Since they are asking for the probability, we multiply our P-value by 100, and we get 

0.0418 * 100 = 4.18%

And our answer is

4.18% that a randomly selected person has an I.Q. above 126
Hopes this helps!
6 0
3 years ago
What is the cost for gas if gas is $2.40 and my car gets 39 miles a gallon and am goin on a road trip that lasts 16 days
Rufina [12.5K]

Answer:

2.40*39= 93.6

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
A right circular cone of radius 6 inches, side length of 16 inches and height of h inches. Which is closest to the height of a c
Elis [28]

Answer:

Height of cone (h) = 14.8 in (Approx)

Step-by-step explanation:

Given:

Radius of cone (r) = 6 in

Slant height (l) = 16 in

Find:

Height of cone (h) = ?

Computation:

Height of cone (h) = √ l² - r²

Height of cone (h) = √ 16² - 6²

Height of cone (h) = √ 256 - 36

Height of cone (h) = √220

Height of cone (h) = 14.832

Height of cone (h) = 14.8 in (Approx)

8 0
2 years ago
SOMEONE HELP ME IM FREAKING OUT I LITERALLY CANT WITH THIS QUESTION IM PRAYING PLEASE HELP ME IM SO SERIOUS IM GONNA END IT PLS
antiseptic1488 [7]

Answer:

\sf -11+7\sqrt{2}

Step-by-step explanation:

Given expression:

\sf \dfrac{3-\sqrt{32}}{1+\sqrt{2} }

Rewrite 32 as 16 · 2:

\sf \implies \dfrac{3-\sqrt{16 \cdot 2}}{1+\sqrt{2} }

Apply radical rule \sf \sqrt{a \cdot b}=\sqrt{a}\sqrt{b}

\sf \implies \dfrac{3-\sqrt{16}\sqrt{2}}{1+\sqrt{2} }

As \sf \sqrt{16}=4:

\sf \implies \dfrac{3-4\sqrt{2}}{1+\sqrt{2} }

Multiply by the conjugate:

\sf \implies \dfrac{3-4\sqrt{2}}{1+\sqrt{2} } \times \dfrac{1-\sqrt{2} }{1-\sqrt{2} }

\sf \implies \dfrac{(3-4\sqrt{2})(1-\sqrt{2})}{(1+\sqrt{2})(1-\sqrt{2})}

\sf \implies \dfrac{3-3\sqrt{2}-4\sqrt{2}+4\sqrt{2}\sqrt{2}}{1-\sqrt{2}+\sqrt{2}-\sqrt{2}\sqrt{2}}

As \sf \sqrt{2}\sqrt{2}=\sqrt{4}=2:

\sf \implies \dfrac{3-3\sqrt{2}-4\sqrt{2}+4 \cdot 2}{1-\sqrt{2}+\sqrt{2}-2}

\sf \implies \dfrac{3-7\sqrt{2}+8}{1-2}

\sf \implies \dfrac{11-7\sqrt{2}}{-1}

\sf \implies -11+7\sqrt{2}

7 0
2 years ago
How do I solve by using system of elimination?
Nikitich [7]
You eliminate or ‘take away’ the answers that you know or think that r wrong. The last answer that’s left is your answer.
6 0
3 years ago
Other questions:
  • A set of stacking cubes measures 2cm by 2cm by 2cm. Kathy stacks eight cubes, and marco stacks five cubes. How much greater is t
    10·1 answer
  • In a group of students, 65 play foot ball, 45 play
    15·1 answer
  • What is the answer to 36/4+-10x2?
    7·1 answer
  • Solve for x. -3(3x+3)= -2x+5
    13·2 answers
  • Select all the statements that describe the following set of numbers.
    14·1 answer
  • What's 28=4 times m m = what
    11·2 answers
  • if a pair of shoes cost Rs 207.50 and a pair of socks Rs 42.50 how many set of shoes and shocks can be brought with Rs 3000​
    13·1 answer
  • I need help with 2&3
    15·1 answer
  • PLEASE SHOW WORK ILL GIVE BRAINLIEST DUE TODAY!!!
    11·1 answer
  • Alyssa’s bank charges $0.15 for each check written, $0.25 per ATM transaction, and a monthly fee to maintain a checking account.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!