Simplify the expression (3.5x - 2.7y) + (-12.8x + 15.8y)

Answers

Answer 1

Answer:

-9.3x + 13.1y

Step-by-step explanation:

(3.5x - 2.7y) + (-12.8x + 15.8y) = 3.5x - 2.7y - 12.8x + 15.8y =

= 3.5x - 12.8x - 2.7y + 15.8y = (3.5 - 12.8)x - (2.7 - 15.8)y =

= -(12.8 - 3.5)x + (15.8 - 2.7)y = -9.3x + 13.1y

because

-(-a) = a

-(a + b) = -a - b

-(a - b) = -a + b = b - a

a + (-b) = a - b


Related Questions

Your savings account had $1,500. You withdrew money to pay for a karate lessons and now have $750. What is the percent change of money in your savings account? plss hurry

Answers

Answer:

The percent change is 50%

Step-by-step explanation:

The savings account lost $750. When the amount lost is the same amount you have left, it signifies that the amount lost is half as much as you had.

Half of the total is represented as 50%.

Check Work:

1500 x 0.5(50%*) = 750

1,500 - 750 = 750

In 14 days the daily high temperature in cedar hills dropped by 16.8 degrees Fahrenheit what is the average daily rate of change in the high temperature in degrees Fahrenheit

Answers

Answer:

1.2°F

Step-by-step explanation:

Given that:

The drop in temperature in degree Fahrenheit over a period of 14 days = 16.8

The average daily rate of change in degwrr Fahrenheit ;

Total drop in temperature / number of days

= 16.8°F / 14

= 1.2°F

Hence, the average daily drop in temperature is 1.2°F

Answer:

12 degress

Step-by-step explanation:

Find the value of x.
A.5.2
B.5.8
C.13.2
D.37.4

Answers

Answer:

x=(14)(sin22)

x=5.24...

x=5.2

The answer is A.

Step-by-step explanation:

pls help w this math

Answers

Answer:

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Answer:

it's the hmmmmm

Step-by-step explanation:

for me you saying hmmmmm

(a) 40% of 70 ice cream orders were for
vanilla. How many orders were for
vanilla?

Answers

28 orders for vanilla

Answer:

lets use proportion:

if 70=100percent

x=40percent

x=(40×70)/100=28 orders for vanilla❤️

(of course, everyone prefers chocolate flavor lol)

Answer:

28 orders were for vanilla

Step-by-step explanation:

40%x70=2800 then cary the decimal over 2 times and u get 28 orders for vanilla



SOMEONE PLEASE HELP ME I WILL GIVE YOU BRAINLY

Answers

Step-by-step explanation:

a scatter plot with no association

pls help with this question

Answers

Answer:

7.01, 10, 7.1, 12, 7.001, 8, 15

Step-by-step explanation:

Those numbers are all greater than 7

Choose a number divisible by 5

A, 1234 b, 5670 c, 3457

Answers

B :) it’s 1134 you’re welcomeeeeeeww

Answer:

B. A number divisible by 5 should have a 5 or a 0 in the ones place.

9(x/3+1)>6 can you help me with this.

Answers

Answer:

the answer is 3 raised ro the third power

In the picture above which represents a linear relationship?

A.
B.
C.
D.

Answers

Possibly d, because it’s a reflection

Answer:

the answer is d for this one

On January 1st, the high temperature was 81 °F in kona, hawaii. the low temperatures was 29 °F in Barrow, Alaska. What was the difference in the two temperatures?​

Answers

Answer:

52 Degrees

Step-by-step explanation:

Subtract 29 (lower number) from 81 (higher number). This will often give you the difference (52) between the two measurements.

А A
P р
С.
D
1 R 1 Pgp is the midpoint of [ABS
I wanna prove that p is the midpoint of (AB) ​

Answers

Answer:

where is the graph.................

find angle A and angle B..​

Answers

Step-by-step explanation:

[tex]\sf{\bold{\blue{\underline{\underline{Given}}}}}[/tex]

[tex]\tt{\angle{c}=110°}[/tex]

and,

[tex]\tt{BC=AC}  [/tex]

⠀⠀⠀⠀

[tex]\sf{\bold{\red{\underline{\underline{To\:Find}}}}}[/tex]

☆Find the [tex]\angle{B} ~and~\angle{A}  [/tex]

[tex]\sf{\bold{\purple{\underline{\underline{Solution}}}}}[/tex]

Here,

BC =AC

so,

⠀⠀⠀

[tex]\angle{A}=\angle{B}  [/tex]

we know that,

[tex]\tt{\boxed{\pink{\angle{A}+\angle{B}+\angle{C}=180°}}}  [/tex]

But [tex]\angle{C}=110°  [/tex](Ģìvéñ)

so..

[tex]\angle{A}+\angle{B}+110°=180°  [/tex]

[tex]\angle{A}+\angle{A}+110°=180°  [/tex]

[tex]\because{\angle{A}=\angle{B} }  [/tex]

[tex]2\angle{A}=180°-110°  [/tex]

[tex]2\angle{A}=70°  [/tex]

[tex]\angle{A}=\dfrac{70°}{2}  [/tex]

[tex]\boxed{\orange{\angle{A}=35°}}  [/tex]

But...

[tex]\angle{A}=\angle{B}  [/tex]

soo,

[tex]\boxed{\orange{\angle{B}=35°}}  [/tex]

[tex]\sf{\bold{\green{\underline{\underline{Answer}}}}}[/tex]

⠀⠀⠀⠀

[tex]\boxed{\green{\angle{A}=35°}}  [/tex]

[tex]\boxed{\green{\angle{B}=35°}}  [/tex]

Pls help and show workings
Thank you in advance
Option
A. 7
B. 10
C. 13
D. 22

Answers

Answer:

D. 22

Step-by-step explanation:

Because if the missing side is 22 cm, the other two sides' sum would have to be greater than 22, but 13 + 9 = 22.

The answer is 7 it wouldn’t make sense to be higher than the numbers when the line is smaller

Help ASAP I’ll mark you as brainlister

Answers

Answer:

9.4 units

Step-by-step

By sine rule:

[tex]\frac{AC}{\sin B} = \frac{AB}{\sin C} [/tex]

[tex]\frac{AC}{\sin 36\degree} = \frac{AB}{\sin 90\degree} \\ \\ \frac{AC}{\sin 36\degree} = \frac{16}{1} \\( \because \: \sin 90\degree = 1) \\ \\ AC = 16 \: \sin 36\degree \\ \\ AC = 16 \times 0.5877852523 \\ \\ AC = 9.40456404 \\ \\ AC \approx \: 9.4 \: [/tex]

PLEASE HELP I will mark brainliest to the correct answer

Answers

Answer:

y=-3x-2

Step-by-step explanation:

so the line is going down so we know that the slope is going to be negative.

slope is y over x and it looks like every time it goes up 3 and to the right 1 so 3/1 is 3 so the slope is 3 and if the slope has to be negative than the answer is the first one

Which of the following is divisible by 2
70581
16853
90000

Answers

90000 is divisible by 2

Answer:

Option 3. 90000 is divisible by 2

Step-by-step explanation:

70581÷2=35,290.5

16853÷2=8,426.5

90000÷2=45,000

This implies that only 90000 is divisible by 2

Help me out please help me​

Answers

5x-22=3x+10
2x-22=10
2x=32
X=16

2(3x + 1) = 5(x – 4) + X

Answers

Answer:

No solution

Step-by-step explanation:

What is the equation of a line that is perpendicular to the y-axis and goes through point (-1,-8).​

Answers

y= -1

it’s a horizontal line that is perpendicular to the y-axis

click on all the coordinate pairs that are solutions to y= 2x^2 + 3x +1

answers : (0,1)
(1,0)
(1,6)
(2,11)
(2,15)​

Answers

The answer I think is (0,1).

Which ordered pair makes the equation y = 4 x + 21 true?

Answers

Answer: x=

1

4

y+

−21

4

Step-by-step explanation:

Let's solve for x.

y=4x+21

Step 1: Flip the equation.

4x+21=y

Step 2: Add -21 to both sides.

4x+21+−21=y+−21

4x=y−21

Step 3: Divide both sides by 4.

4x

4

=

y−21

4

x=

1

4

y+

−21

4

what is the slope of the line shown?

Answers

Answer:

right angle

Step-by-step explanation:

because the bottom right looks empty

Calculator
This figure consists of a rectangle and semicircle
What is the area of this figure?
Use 3.14 for
Enter your answer as a decimal in the box.

Answers

Answer:

180

Step-by-step explanation:12m * 15m

If a = 3, what is the value of 2a2.

A. 6

B. 12
C. 18

D. 36

Answers

Answer:

C.

Step-by-step explanation:

I got it correct good luck bye!

Answer:

c

Step-by-step explanation:

I got it right I did the test

Use the distributive property to solve: 4(x - 7) *
4x - 28
28x
28 - x
28 - 4x

Answers

The answer is : 4x-28

Help ASAP please helppp
Here’s a picture too

Answers

Answer:

B

Step-by-step explanation:

Stet by step explanation

Answers

Answer:

x = 4

y = -3

Step-by-step explanation:

2x + 4y = -4

x + 2y = -2 ---------(1)

3x + 5y = -3 ----------(2)

Equation (1) multiplied by 3 then subtracted from equation (2),

(3x + 5y) - 3(x + 2y) = -3 + 6

-y = 3

y = -3

From equation (1)

x + 2(-3) = -2

x - 6 = -2

x = 6 - 2

x = 4

Leah surveys every fifth person leaving the public library about whether they support a plan to increase town bus service. She finds that most of the people surveyed support the plan. Leah concludes that most residents of the town must support the plan.

Which statement best explains whether Leah's conclusion is correct or incorrect?

A She may not be correct, because her sample is representative of the voters in the town,
B She should be correct, because her sample is representative of the voters in the town,
© She may not be correct, because her sample is not representative of the voters in the town,
D) She should be correct, because her sample is not representative of the voters in the town.​

Answers

Answer:

ghhjufhbf7hfigtcyghuiojvgukbv

I WILL MARK BRAINEST!!
I really need help on how to do this I’m so confused someone please help me find the answer and is it okay if you explain how you got the answer thank you so much!!!!

Answers

To find how much the tax is you multiple 750 by .13(13%) to get 97.5. That is how much the tax is after you have to add the tax to the original price to get how much the total amount is with tax giving you $847.50
I hope this helps:)
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