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
Bess [88]
3 years ago
7

Simplify the expression -10n-2n

Mathematics
1 answer:
creativ13 [48]3 years ago
7 0
Subtract 2n from -10n to get -12n
-12n
You might be interested in
Write the equation of the parabola that has its x-intercepts at (1+<img src="https://tex.z-dn.net/?f=%5Csqrt%7B5%7D" id="TexForm
VladimirAG [237]

Answer:

y=2x^2-4x-8

Step-by-step explanation:

<u>Factored form of a parabola</u>

y=a(x-p)(x-q)

where:

  • p and q are the x-intercepts.
  • a is some constant.

Given x-intercepts:

  • (1+√5, 0)
  • (1-√5, 0)

Therefore:

\implies y=a(x-(1+\sqrt{5}))(x-(1-\sqrt{5}))

\implies y=a(x-1-\sqrt{5})(x-1+\sqrt{5})

To find a, substitute the given point (4, 8) into the equation and solve for a:

\implies a(4-1-\sqrt{5})(4-1+\sqrt{5})=8

\implies a(3-\sqrt{5})(3+\sqrt{5})=8

\implies4a=8

\implies a=2

Therefore, the equation of the parabola in factored form is:

\implies y=2(x-1-\sqrt{5})(x-1+\sqrt{5})

Expand so that the equation is in standard form:

\implies y=2(x^2-x+\sqrt{5}x-x+1-\sqrt{5}-\sqrt{5}x+\sqrt{5}-5)

\implies y=2(x^2-x-x+\sqrt{5}x-\sqrt{5}x+\sqrt{5}-\sqrt{5}+1-5)

\implies y=2(x^2-2x-4)

\implies y=2x^2-4x-8

6 0
1 year ago
Select the correct answer from each drop-down menu.A carpenter is building a triangular frame. She has three pieces of wood meas
yaroslaw [1]

Explanation

Answer:

The carpenter can build the triangular frame by cutting the 12 foot piece by 2foot

8 0
1 year ago
An online retailer collects 7% sales tax. If the sub total of the purchase is $76.00, then how much is collected for sales tax?​
jok3333 [9.3K]

The collected tax on purchase of $76.00 is $5.32

Further explanation:

The sales tax is calculated on the total sales by the formula

Tax = total * \frac{7}{100}

Given

Total purchase = $76.00

Percentage of tax = 7%

So,

Putting the values in the formula

Tax\ amount = 76.00 * \frac{7}{100}\\= 5.32

So, the collected tax on purchase of $76.00 is $5.32

Keywords: Tax, tax calculation

Learn more about tax calculation at:

  • brainly.com/question/2678748
  • brainly.com/question/2686310

#LearnwithBrainly

3 0
3 years ago
70x 6,000 as associative
Vinvika [58]

Answer:

70 x 6000 = 6000 x 70

Explanation:

The associative of multiplication means the items can be regrouped without changing the answer: a(bc) = (ab)c. This means 70 x 6000 = 70 x 6 x 1000.

5 0
3 years ago
If f(x)=-2x-3 what is f(r+2) ?
fiasKO [112]

Answer:

f(x) =  - 2x - 3

when x is r + 2 :

f(r + 2) =  - 2(r + 2) - 3 \\  =  - 2r - 4 - 3 \\  =  - 2r - 7 \\  \\ { \boxed{ \boxed{f(r + 2) =  - 2r - 7}}}

4 0
3 years ago
Other questions:
  • Jonathan, a researcher, wants to know the average variation in altimeters of small, privately owned airplanes. This task is expe
    10·1 answer
  • A game of chance involves rolling a 14-sided die once. If a number from 1 to 3 comes up, you win 2 dollars. If the number 4 or 5
    8·1 answer
  • Evaluate 2x+5.6 x=1.4
    12·2 answers
  • If y varies directly with x and y =70 when x=14, find x when when y = 110
    13·1 answer
  • What is the measure of an angle whose degree is five times its compliment?​
    5·1 answer
  • A dripping faucet loses about 2.5×10^−4 litres of water each minute. There are approximately 3×10^5 minutes in a month.
    6·2 answers
  • The 18 faculty members in a college math department range in age from 32 to 68. A stem plot follows: The first and third quartil
    9·1 answer
  • Sterling and Diamond Bracelet<br> $49<br><br> Originally $150<br> ______% Off
    7·1 answer
  • What is the equivilent of 2(6x+2)
    13·2 answers
  • Find the missing angle measure in each triangle as acute, right or obtuse
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!