Mathematics College

How Do I simplify this?
-3(x + 4y) + 2(x - 2y) + (3x -5y)​

Answers

Answer 1

Answer:

=2x - 21y

Step-by-step explanation:

One step at a time

-3(x + 4y) = -3x - 12y

2(x - 2y) =2x - 4y

=-3x - 12y + 2x - 4y + 3x -5y

=2x - 21y

Related Questions

what is the sign of f on the interval -5

Answers

Answer:

f(x) = x3 - 3x + 1

f'(x) = 3x2 - 3 = 3(x2 - 1) = 3(x+1)(x-1)

Find the critical numbers:  set f'(x) = 0

                                    3(x+1)(x-1) = 0     x = 1, -1

Check the sign of f'(x) on either side of each critical number.  If f'(x) is positive on an interval, then f is increasing on the interval.  If f'(x) is negative on an interval, then f is decreasing on the interval.  

     +      l       -       l      +     sign f'(x)

-------------------------------------

            -1              1

f is increasing on (-∞, -1) υ (1, ∞)

f is decreasing on (-1, 1)

On Saturday the farmer planted 10 rows of tomato plants with p plants in each row on Sunday the farmer planted 6 rows of pepper plants with p plants in each row. Which expression gives the total number of plants the farmer planted this weekend?

Answers

Answer:

Step-by-step explanation:

40

express 28x-35y=-7,inthe form ax+by+c=0and find the value of a,b,&c​

Answers

Answer:

a = 28, b = -35 and c =7

Step-by-step explanation:

Given expression is :

28x-35y=-7

We need to express it in the form of ax+by+c=0 and then find the value of a,b and .

Adding 7 to both sides.

28x-35y+7=-7+7

28x-35y+7=0

or

28x+(-35y) +7=0

It is in the form of ax+by+c=0.

On comparing,

a = 28, b = -35 and c =7

2a - 3b = -11
a + 3b = 8

Answers

Answer:

b = 3 and a = -1

Step-by-step explanation:

You have your given equation:

2a - 3b = -11

a + 3b = 8

You need to find what a and b is.

To find b:

2a - 3b = -11

-2a - 6b = -16

I multiplied a + 3b = 8 by -2. When you multiply a number you have to multiply all of them. You have to choose a number that would cancel out all of a.

So now your equation would look like this when you solve for b:

2a - 3b = -11

-2a - 6b = -16

-------------------

a - 9 = -27 then you divide -9 to -27 which is 3 so b = 3.

To find a:

2a - 3b = -11

a + 3b = 8

I multiplied a + 3b = 8 by -1 and 2a - 3b = -11 by -1 as well.

Your equation will look like this when you solve for a:

-2a + 3b = 11

-1a - 3b = -8

------------------

-3a = 3 then divide -3 to 3 which is -1 so a = -1.

Check to see if you have the correct answer by plugging in the number you got for a and b into the equation and solve.

1. 2(-1) -3(3) = -11

 -2 - 9 = -11

2. -1 + 3(3) = 8

   -1 + 9 = 8

Pls help extra points

Answers

Answer:

9^7

Step-by-step explanation:

9 x 9 x 9 x 9 x 9 x 9 x 9 = 9^7

The "^" symbol means the number behind it is an exponent btw!

Find the missing side length. WILL GIVE BRAINLIEST

Answers

Answer:

13.318

Step-by-step explanation:

i would go into all the work, but my hands will hurt from typing. Hope this helps

Find the value of x.

Answers

Answer:

x=34 degrees

Step-by-step explanation:

since angle TSU=4x then angle RSP=4x

4x-3x=x

angle PSQ=x

angle PQS=112 degrees (180-68=112)

triangle PSQ angles are x+x+112=180

2x-68

x=34 degrees

Express this rate as a unit rate: $50 for 4 days of work. Note: You must label your unit rate.

Answers

Answer:

12.50 dollars per day

Step-by-step explanation:

This is a fraction equal to

50 dollars ÷ 4 days

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 4

50 dollars ÷ 4

4 days ÷ 4

=  

12.5 dollars

1 day

=  

12.5 dollars

day

= 12.5 dollars per day

PLEASE ANSWER QUICKLY

Answers

Answer:

C. 5

Step-by-step explanation:

6=-3x+21

6=-3(5)+21

6=-15+21

6


Are the triangles similar?

1.These triangles are not similar.

2.These triangles are similar by AA.

3.These triangles are similar by SAS.

4.These triangles are similar by SSS.

Answers

Answer:

Yes, the triangles are SIMILAR, not exact.

Step-by-step explanation:

None.

Answer:

yes

no

no

yes

Step-by-step explanation:

Which expression is equivalent to 3x + 6

Answers

Answer:

3x + 6 is equal to x + 2

Step-by-step explanation:

Answer: 3( x + 2)

Step-by-step explanation:

6

3x+6

3(x+2)

A
car travels 120 miles in 3 hours how far does the car travel in 1 hour

Answers

Answer:

200 miles

Step-by-step explanation:

Answer: i have no idea sorry

Step-by-step explanation:

The octahedron can be constructed from the repetitive folding of ___.
A. equilateral triangles
B. squares
C. regular pentagons
D. triangles

Answers

Answer:

Triangles

Step-by-step explanation:

hotgsosbsga aksnsusgsv

Answer:

A. EquilateralTriangles BRAINLIEST PLS

Step-by-step explanation:

solve the following equation: 7/8 = -7

Answers

Answer:

lets just say -8

Step-by-step explanation:

able
10. Find the rate of change in the table below.
Show all work.
Х
18
20
22
24
4.5
у
5
5.5
6

Answers

Answer:

1/4

Step-by-step explanation:

.5/2=.25=1/4

3) 5.6 x 7.3
Use the expression to answer Rewrite the expression above using two whole numbers.

Answers

Hello there!

Explanation:
↓↓↓↓↓↓↓↓
First you had to multiply without the decimal points, and then you put the decimal point it should be the correct answer.

5.6 it has one decimal place.
7.3 it has one decimal place.
Therefore, the answer should be the two decimal places.

Answer⇒⇒⇒⇒⇒40.88
Hope this helps!
Thank you for posting your question at here on Brainly.
Have a great day!
Well, we have to answer 5.6 by 7.3.
First of all, let’s answer this question just like that without converting anything:
5.6 * 7.3 = 40.88
So, we have our answer which is 40.88 but the question also tells us to answer this question using whole numbers instead of decimals so, what we are going to do is that we will multiply both 5.6 and 7.3 by ten so that we change them to 56 and 73.
Once we finish multiplying 5.6 and 7.3 together, we will take our answer and divide it by 100 (moving two spaces to the left of our answer) because we multiplied our two numbers by ten which is 2 decimal places do, when we get our answer, we will move back those two decimal places.
= 56 * 73
= 4088
= 4088 / 100
= 40.88.

So, in conclusion, we came up with the same exact answer!
Really glad that I could help and have a fantastic day!
Also, can you please mark my answer as the brainliest answer?
Thank you so much!

Okay I need help so I just don't understand. The only thing I know is that 3^{2} means 3 times 3 but How do I solve the problem???

Answers

Answer:

(49-3square)÷(10-5)

(49-9)÷5

40÷5

8

Find the indicated term of each arithmetic sequence. 27th term: 59, 56, 53, 50....

Answers

Answer:

The 27th term is -22

Step-by-step explanation:

So we know 59 is the first term

and for every term, its -3

So multiply -3 by 27= -81

59-81

-22

SOS HURRY 25 POINTS

A small business reported profits of 135% of the previous month's profit. If they profited $5,000 this month, then how much did they profit last month?​

Answers

Answer:

5,000 / 1.35= 3,703.70 is last months profit

Step-by-step explanation:

I hope this helps :)

Which expression is equivalent to 4/9 times 7

Answers

Answer:

4/9 * 7 =3.11111111

Step-by-step explanation:

4/9 * 7 =3.11111111

Answer:

7 times 4/9

Step-by-step explanation:

Its simple lol

Points T and D are located on a number line. Point T has coordinate negative 4 and point D has coordinate 8.

Find the length of T D

Answers

Answer:

12 units?

Step-by-step explanation:

22 divided by 5, area model

Answers

Answer:

The answer for this question is 4.4

can somebody please help me with this and explain it?

Answers

Answer:

7. No, because the x-value 11 has two y-values pair with it.

8. Not a function

Step-by-step explanation:

If there is more than one y-values per x-value then it is not considered a function, same with Question 8.

7.)D because the y values should not repeat to be a function
8.)B it is not a function because the x values repeats (-3)

Hope this helps

Have a great day/night

A) options: liters, millileters
B)Options: millimeters centimeters meters kilometers
C) options grams, kilograms ​

Answers

A.) milliliters
B.) centimeters
C.) grams

Jim picks 16 quarts of berries. He needs 2 1/4 quarts to make a batch of jam. If he saves 2 1/2 quarts of berries to eat how many batches of jam can Jim make?

Answers

16 - 2.5 = 13.5
13.50/2.25 = 6

He can make 6 batches of jam!

Given: f(x) = 1/x+5 and g(x) = x - 2.
What are the restrictiorts of the domain of f(g(x))?
0 x4 -5
O X-3
OX= 2
There are no restrictions.

Answers

Answer:

The restriction of the domain of f(g(x)) is that x cannot be 3.

Step-by-step explanation:

The first step to solve this question is finding the function, replacing the values. So

[tex]f(x) = \frac{1}{x+5}[/tex]

[tex]g(x) = x - 2[/tex]

[tex]f(g(x)) = f(x - 2) = \frac{1}{x - 2 + 5} = \frac{1}{x - 3}[/tex]

The function is a fraction, which means that the restriction is that the denominator cannot be zero. So

[tex]x - 3 \neq 0[/tex]

[tex]x \neq 3[/tex]

The restriction of the domain of f(g(x)) is that x cannot be 3.

-x+y=-2 in slope intercept form​

Answers

Answer:

y = x - 2

Step-by-step explanation:

Slope intercept form is: y = mx + b, where m is the slope and b is the y- intercept. In this question, we are given everything, and all we need to do is rearrange the terms.

-x + y = -2

Add x to both sides

y = x - 2

In this equation, the slope is 1 and the y intercept is -2.

Answer:

Step-by-step explanation:

Y = mx + b

Y = x -2 after adding x to both sides of equation

m = 1 and b = -2

Round 0.00076511 to one significant figure

Answers

Answer: 0.0008

Step-by-step explanation: Hope this helps :)

Sven has 11 more than twice as many costumers as when started selling newspapers
He now has 73 customers.How many did he have when he started ?​

Answers

Answer:31

Step-by-step explanation:

You take 73 and subtract 11 and get 62 then divide it by 2 and you get 31

73-11=62
62/2 =31 the answer is 31

Directions: Match the product and quotients estimates below with the correct expression on the left
35 x 23
132168
173 X 18.4
999 208
998 x 211
11 10x20 170x180
11100020
11 1303170
11 1000 210

Answers

Answer:

Answer is in attached image.

Step-by-step explanation:

Given the expressions, for which we have to find the estimates as per the expressions on the left.

The given expressions are:

1) 35 [tex]\times[/tex] 23

2) 132 [tex]\div[/tex] 168

3) 17.3 [tex]\times[/tex] 18.4

4) 999 [tex]\div[/tex] 208

5) 998 [tex]\times[/tex] 211

Here, we need to find the rounded off numbers.

35 can be rounded to 40 and 23 to 20.

Therefore, equivalent to 35 [tex]\times[/tex] 23 is 40 [tex]\times[/tex] 20

132 can be rounded to 130 and 168 to 170.

Therefore, equivalent to 132 [tex]\div[/tex] 168 is 130 [tex]\div[/tex] 170.

17.3 can be rounded to 17.0 and 18.4 to 18.0.

Therefore, equivalent to 17.3 [tex]\times[/tex] 18.4 is 17.0 [tex]\times[/tex] 18.0.

999 can be rounded to 1000 and 208 to 210.

Therefore, equivalent to 999 [tex]\div[/tex] 208 is 1000 [tex]\div[/tex] 210.

998 can be rounded to 1000 and 211 to 210.

Therefore, equivalent to 998 [tex]\times[/tex] 211 is 1000 [tex]\times[/tex] 210.

The solution can be found in the attached image as well.

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