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
Zina [86]
3 years ago
7

Simplify the expression. (−0.75x + 8) + (1.5x + 4.4) The simplified expression is

Mathematics
1 answer:
Len [333]3 years ago
4 0

Simplify

-0.75x + 8 + 1.5x + 4.4

Collect like terms

(-0.75x + 1.5x) + (8 + 4.4)

Simplify

<u>0.75x + 12.4 </u>

You might be interested in
Mr. Ray wanted to measure the height of a light post. He placed a mirror on the ground 32 feet from the light post, then walked
ryzh [129]

Answer:

Option (2) is the answer.

Step-by-step explanation:

From the figure attached,

AB represents the length of Mr. Ray, ED represents the light post and the mirror was placed at point C.

Here AB = d = 6 feet

CD = w = 32 feet

BC = f = 9 feet

Since both the triangles ABC and EDC are similar, their corresponding sides will be in the same ratio.

\frac{AB}{DE}=\frac{BC}{CD}

\frac{6}{h}=\frac{9}{32}

h = \frac{6\times 32}{9}

h = 21.33 feet

h ≈ 21.3 feet

Therefore, height of the light post is 21.3 feet.

Option (2) is the answer.

7 0
3 years ago
When dividing exponents with the same base, keep the base and subtract the powers
tresset_1 [31]
3^3 / 3^1 = 3^2 is my example 
5 0
4 years ago
Find the product or type<br>"impossible".<br>3 -5 4 2<br>​
katrin2010 [14]

Answer:

The product of \begin{pmatrix}3&-5\\ \:1&7\end{pmatrix}\begin{pmatrix}4&2\\ \:-4&2\end{pmatrix} is \begin{pmatrix}32&-4\\ -24&16\end{pmatrix}.

Step-by-step explanation:

A matrix is a rectangular arrangement of numbers into rows and columns.

Matrix multiplication refers to the product of two matrices.

The main condition of matrix multiplication is that the number of columns of the 1st matrix must equal to the number of rows of the 2nd one.

To find the product of \begin{pmatrix}3&-5\\ \:1&7\end{pmatrix}\begin{pmatrix}4&2\\ \:-4&2\end{pmatrix}

\mathrm{Multiply\:the\:rows\:of\:the\:first\:matrix\:by\:the\:columns\:of\:the\:second\:matrix}\\\\\begin{pmatrix}3&-5\end{pmatrix}\begin{pmatrix}4\\ -4\end{pmatrix}=3\cdot \:4+\left(-5\right)\left(-4\right)\\\\\begin{pmatrix}3&-5\end{pmatrix}\begin{pmatrix}2\\ 2\end{pmatrix}=3\cdot \:2+\left(-5\right)\cdot \:2\\\\\begin{pmatrix}1&7\end{pmatrix}\begin{pmatrix}4\\ -4\end{pmatrix}=1\cdot \:4+7\left(-4\right)\\\\\begin{pmatrix}1&7\end{pmatrix}\begin{pmatrix}2\\ 2\end{pmatrix}=1\cdot \:2+7\cdot \:2

\begin{pmatrix}3&-5\\ 1&7\end{pmatrix}\begin{pmatrix}4&2\\ -4&2\end{pmatrix}=\begin{pmatrix}3\cdot \:4+\left(-5\right)\left(-4\right)&3\cdot \:2+\left(-5\right)\cdot \:2\\ 1\cdot \:4+7\left(-4\right)&1\cdot \:2+7\cdot \:2\end{pmatrix}

\mathrm{Simplify\:each\:element}\\\\\begin{pmatrix}3&-5\\ 1&7\end{pmatrix}\begin{pmatrix}4&2\\ -4&2\end{pmatrix}=\begin{pmatrix}32&-4\\ -24&16\end{pmatrix}

6 0
4 years ago
Without multiplying, determine the sign of the product (−247,634) × (183,758).
Vitek1552 [10]

the sign will be a negative sign -

6 0
3 years ago
Read 2 more answers
Which ones are functions and which ones are NOT functions?
sweet-ann [11.9K]

Answer:

only a is a function because its the only one that doesn't have a repeating x value

7 0
4 years ago
Read 2 more answers
Other questions:
  • Which one is greater 12/25 or 9/20 can someone tell me the answer and explain
    5·1 answer
  • What is the function rule of 2x - 1
    12·1 answer
  • For each of the following system of linear equations, state the number of solutions without solving the system. a) -x+3y=9, -4x+
    8·1 answer
  • In the first ten months of the year, people took out 427,113 books from the Brookton Library.the librarian would like to set a n
    7·1 answer
  • In your own words, define "like terms".
    11·1 answer
  • Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well
    11·1 answer
  • One reading at an arctic research station showed that the temperature was -35 c what is this temperature in degrees fahrenheit?
    11·1 answer
  • Yeah im kind of confused can you guys help me
    5·1 answer
  • Fastest answer gets brainiest !
    5·1 answer
  • F(x)= 2x^3 + 5x^2 -x -6 is divided by x+1
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!