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
Aneli [31]
3 years ago
11

Simplify (3x2 – 4x – 1) + (8x2 – x + 6)

Mathematics
1 answer:
abruzzese [7]3 years ago
6 0

Answer:

11x^{2} -5x+5

Step-by-step explanation:

3x^{2}-4x-1+8x^{2} -x+6

3x^{2}+8x^{2}-4x-x-1+6

Combine like terms

11x^{2}-5x +5

You might be interested in
If costheta=4/5 then what is sec^2theta
DaniilM [7]

Answer:

\sec^2(\theta)=\frac{25}{16}

Step-by-step explanation:

Recall what the relationship between cosine and secant:

\sec(\theta)=\frac{1}{\cos(\theta)}

In other words, secant is the reciprocal of cosine.

So, if we know cosine, we only need to find its reciprocal to find secant.

We are given that cosine is:

\cos(\theta)=\frac{4}{5}

Then secant must be:

\sec(\theta)=\frac{5}{4}

So:

\sec^2(\theta)=(\frac{5}{4})^2

Square:

\sec^2(\theta)=\frac{25}{16}

And we're done!

5 0
3 years ago
10 to the 5th power plus 10 to the -1 power
Serggg [28]
1000000+1/10. There are no rules for when you add the powers.
8 0
3 years ago
Can someone step by step help me answer the ones that aren’t done
notsponge [240]

Number 6

Answer:

y = (c - ax)/b

Step-by-step explanation:

ax + by = c

by = c - ax

y = (c - ax)/b

<em>I answered number 5 in your last question.</em>

3 0
3 years ago
Read 2 more answers
Given ƒ(x) = 9x + 54, find x when ƒ(x) = 18. <br> A)−6 B)−4 C)3 D)8
Katen [24]

Answer:

B. -4

Step-by-step explanation:

We want to find x such that f(x)=18.

We need to therefore solve 9x+54=18 forx.

9x+54=18

Divide both sides by 9:

(9x+54)/9=18/9

9x/9+54/9=18/9

Simplify:

x+6=2

Subtract 6 on both sides:

x=2-6

Simplify

x=-4.

So f(-4) should have value 18.

Let's check.

f(x)=9x+54

f(-4)=9(-4)+54

f(-4)=-36+54

f(-4)=18

So the answer is B.

7 0
3 years ago
Read 2 more answers
Find all numbers whose absolute value is 2 .
Amiraneli [1.4K]
Absolute value of a real number, is the distance between that number and 0 on a number line. Therefore the absolute value of 2 is 2 and negative 2
6 0
3 years ago
Read 2 more answers
Other questions:
  • shawna reduced the size of a rectangle to a height of 2 inches. What is the new width of it was originally 24 inches in width an
    11·1 answer
  • 67/63 as a mixed number
    9·1 answer
  • Evaluate the expression 7x2y, when x = 4 and y = 2. and just gave me the plain answer
    9·2 answers
  • Use the substitution x = 2 − cos θ to evaluate the integral ∫ 2 3/2 ( x − 1 3 − x )1 2 dx. Show that, for a &lt; b, ∫ q p ( x −
    14·1 answer
  • Can you also answer this question please
    5·1 answer
  • at the end of dinner a restaurant had several dishes of quiche each with 2/6 size pieces of quiche. the chef was able to combine
    14·1 answer
  • HELP! I need 2 problems for this question!
    10·1 answer
  • Create an expression. Marvin's garden has 13 rose bushes in it. If he plants 4 more rose bushes each week, write an algebraic ex
    6·1 answer
  • GIVING BRAINIEST IF CORRECT!!<br><br> Find rad 45 + rad 18
    12·1 answer
  • Julie has 2/3 cup of syrup but needs 1and 1/2cups for
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!