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
lesya [120]
3 years ago
12

Select the expression equivalent to -81 x + 27.

Mathematics
1 answer:
MArishka [77]3 years ago
5 0

Answer:

B -9(9x-3)

Step-by-step explanation:

b/c -9(9x-3) means -9×9x-(-3)

= -81x+27

if you say why -(-3) is +27, I will say b/c negative times negetive it give us positive. and if you they why we don't add -81x and 27, I will say b/c they are not like terms.

like terms : are terms with the same variable and same exponent.

example:2x and 3x,5xy and 9yx and etc....

if it helpful ❤❤

THANK YOU

You might be interested in
The value of a car is inversely proportional to its age. if a car is worth ​$8100 when it is 6 years​ old, how old will it be wh
Sveta_85 [38]
It is $13.500 because you are adding
8 0
2 years ago
An airplane is traveling in the direction 20 degrees west of north at 700 ​km/hr. Find the component form of the velocity of the
OLga [1]

Answer:

  (-239.4, 657.8) km/h

Step-by-step explanation:

Measured CCW from the +x axis, the angle at which the airplane is traveling is 110°. Then the (x, y) components of the velocity vector are ...

  (700 km/h)(cos(110°), sin(110°)) ≈ (-239.4, 657.8) km/h

4 0
3 years ago
What is the midpoint of a segment with These endpoints (-6,-9) and (16,5)
lora16 [44]

~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ (\stackrel{x_1}{-6}~,~\stackrel{y_1}{-9})\qquad (\stackrel{x_2}{16}~,~\stackrel{y_2}{5}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{ 16 -6}{2}~~~ ,~~~ \cfrac{ 5 -9}{2} \right)\implies \left( \cfrac{10}{2}~~,~~\cfrac{-4}{2} \right)\implies (5~~,~-2)

7 0
2 years ago
True or false this number is written in scientific notation? <br> .2486 x 10^12
Scilla [17]

Answer:

<h2>It Is True </h2>

It is true because scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.

8 0
3 years ago
How to wirte a linear equation from a graph
astra-53 [7]
Hey there!
I'll assume we're using the slope-intercept form equation:
y = mx + b
m = slope
b = y-intercept
First, we keep the y, because it's value depends on the x value given.
Next, we find the slope. Slope is defined as rise/run, so we take two points on the graph, find how much taller one is from another, and how far right/left they are, put those values over each other, and we have out slope (m).
Finally, we need to determine the y-intercept, and that's as simple as seeing where the line crosses the y axis and writing down that value.
Hope this helps!
8 0
3 years ago
Other questions:
  • Show that the following rational number by expressing it as a ratio quotient of two integers 0.9
    8·1 answer
  • Here are five number cards.
    12·1 answer
  • Which of the segments below is a secant
    8·2 answers
  • On a coordinate grid the coordinates of vertices p and q for polygon pars are p(5,4) and q(-2,4) what is the length of side pq?
    14·1 answer
  • Show all Work; Solve using the substitution method:<br><br> y=x-6<br> 3x-2y=8
    15·1 answer
  • Sam borrowed $4,500 for 2 years and had to pay $630 simple interest at the end of
    13·1 answer
  • Alyssa has 25$. She spends 4/5 of her allowance on a new shirt . How much did she spend on the shirt
    8·1 answer
  • PLEASE HELP MEEE PLEASEEEE
    6·1 answer
  • HELPPPPP!Determine the range of the following graph:
    7·1 answer
  • NOT is coded as LKF and FLY is coded as TNA, then which of the following word/s has/have correct coding? (1) TOP – FKJ (2) RUN –
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!