What is a 2c − 5b − c a − b simplified?

Answers

Answer 1

Answer: All you have to do is combine like terms. 2c and (-c) are like terms (-5b) and (-b) are like terms and a is a term. So, 2c combined with (-c) is C. (-5b) and (-b) combined is (-6b). Since a doesnt need to be combined with anything, you leave it as it is so your answer will then be c - 6b + a (this is the answer assuming that there is a + in front of the a. If there is a - sign, then just change your +a to -a at the end

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Which of the following is a polynomial with roots 4, −5, and 7?Question 4 options: 1) f(x) = x3 − 6x2 − 27x + 1402) f(x) = x3 − 6x2 − 20x + 273) f(x) = x3 − 20x2 − 27x + 35 4) f(x) = x3 − 20x2 − 35x + 140
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Determine the volume of the picture below. Please help

Answers

the answer to this question is D

Answer:

6825 in

Step-by-step explanation:

Since the shape is a composite figure, we need to break it up into 2 shapes!

Rectangle and a triangular prism

Solving for Rectangle...

Volume = Length · Width · Height

Volume = 30 · 13 · 13

Volume = 5070 in

Solving for Triangular Prism

Volume = Length · Width · Height / 2

Volume = 30 · 9 · 13 / 2

Volume = 3510/2

Volume = 1755 in

Finally, add the volumes!

5070 + 1755 = 6825 in

A ship must be unloaded by two cranes in 12 hours. Both cranes worked for 8 hours and then one of them broke. The rest of the work was done by the other crane in 7 hours. How long would each crane take to do the entire job if it was working alone? Thank you!

Answers

Answer:

6 hours

Step-by-step explanation:

8 hours x 2 cranes = 16 hours of total work

After one broke

7 hours x 1 crane = 7 hours of total work

16 + 7 = 23 hours

It would take 23 hours for one crane to do the whole job.

Function 1: y = 4x + 5Function 2: The line passing through the points (1, 6) and (3, 10).

Which of these functions has the greater rate of change?
A) Function 1, because the slope is 5 and the slope of function 2 is 4.
B) Function 1, because the slope is 4 and the slope of function 2 is 2.
C) Function 2, because the slope is 7 and the slope of function 1 is 5.
D) Function 2, because the slope is 5 and the slope of function 1 is 4.

Answers

Answer:

Option B is correct

Function 1, because the slope is 4 and the slope of function 2 is 2.

Step-by-step explanation:

Slope-intercept form:

The equation of line is given by:

$y=mx+b$

where, m is the slope and b is the y-intercept

As per the statement:

Function 1: y = 4x + 5

On comparing with [1] we have;

Slope of function 1 = 4

Function 2: The line passing through the points (1, 6) and (3, 10).

Using slope formula:

$\text{Slope}= (y_2-y_1)/(x_2-x_1)$

Substitute the given points we have;

$\text{Slope}= (10-6)/(3-1)$

⇒ $\text{Slope}= (4)/(2)$

Simplify:

⇒ $\text{Slope}=2$

⇒ $\text{Slope}= (4)/(2)$

⇒ Slope of the function 2 is, 2

Since, function 1 is greater rate of change.( i.e 4 > 2)

Therefore,

Function 1 has the greater rate of change, because the slope is 4 and the slope of function 2 is 2.

Answer:

Answer is b

Step-by-step explanation:

If f(x) = 2x^2 - 10, find f(5).

Answers

sub 5 for every x
f(5)=2(5)^2-10
f(5)=2(25)-10
f(5)=50-10
f(5)=40

Decrease £40 by 10% someone please help me! X

Answers

£40 * 0,1 = £4
£40 - £4 = £36

40 * .10 = 4
40 - 4 = 36.

Or subtract 10% from 100%
1.00 - .10 = .90

.90 * 40 = 36

Money adding how to do it

Answers

Basically if you know your addition just add the values of each coin or dollar bill. Just forget about the $ sign or cent sign when adding the values together.
FOR EXAMPLE:
$1 and $2.75
You would ignore dollar sign and add together like normal to get
3.75
But remember to add dollar sign back at the end.
If the value only have 2 values with cents it should be something like
0.54 cents BUT NO DOLLAR SIGN
Hope that helps

what you do is add the numbers up then when you get your answer put the dollar sign in the front of of the first number to the left hope that helps

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