help neededdd.......

Help Neededdd.......

Answers

Answer 1

Answer:

1. -5a

Step-by-step explanation:

The definition of combining like terms is adding their coefficients, for example: 2x + 3x = (2+3)x = 5x.

So for this one, -21a+16a = (-21+16)a = -5a.


Related Questions

Solve for n in the following equation. A=P(1+n) show all your work

Answers

Answer:

A-1/P=n

Step-by-step explanation:

step 1. look at the parentheses and use inverse operations on both sides

A=P(1+n)

-1       -1

step 2. divide both sides by P

A-1=P(n)

/P    /P

n= A-1/P

The value of n on solving the equation A = P (1 + n) is A / P - 1.

What is equation?

An assertion that two mathematical expressions have equal values is known as an equation. An equation simply states that two things are equal. The equal to sign, or "=," is used to indicate it.

Given:

A = P (1 + n),

Here we can solve the parentheses by using the distributive property as shown below,

A = P × 1 + P × n

A = P + nP

Transform as shown below,

nP = A - P

n = (A - P) / P

n = A / P - 1

Thus, the value of n is A / P - 1.

To know more about equation:

https://brainly.com/question/12788590

#SPJ2

One person is chosen from a class of students here are some possible outcome

a) The person is over to 14 years old.

B)the person is less than 12 years old

C)The person is a female

D)the person is a male

For Each of these statements decide whether it’s true ‘ false ‘ or you can’t tell

A and B are mutually exclusive

A and C are mutually exclusive

C and D are mutually exclusive

Answers

I think is A and the another question is B

Let see if this work

Answers

Answer:

i really dont know what you are saying, but thanks for the points and have a nice day! always smile peeps!

The mixed number 9 14/100 is equivalent to 9.14.

True or False?

ANSWER TO GET 20 POINTS

Answers

Your answer is True !:)

Answer:

true

Step-by-step explanation:

​​​​​​Write an equation to describe this situation using decimals. “Tessa bought x pounds of almonds. Lark (y) bought more than that”. PLEASE HELP!

Answers

Answer:

y = 1.6x

Step-by-step explanation:

y is the total amount/pounds of almonds that Lark bought. x is the amount that Tessa bought. 3/5 is the same as 0.6. If we multiplied Tessa's amount by 0.6 it would decrease by 2/5 so we have to add 1 to make it 1.6. To find how much Lark bought multiply 1.6 and Tessa's amount.

Answer:

how many 35 (x) did molly purchase, for 5 (y) weeks.

Step-by-step explanation:

I chose this because each number represents a different volume , it also makes a good answer, comment or repsond if i am wrong.

What are 1/2 and 2/4 as a decimal?

Answers

Answer:

0.50 or 0.5

Step-by-step explanation:

Answer:

1/2= 0.5  2/4=0.5

The reason for this is because both questions are half a fraction, so both of them would be half a decimal  

Step-by-step explanation:

HELP ME PLEASEEEEEEEEEE

Answers

Answer: The total amount the water change was -28 gallons by the end of the week OR The total amount the water changed decreased 28 gallons by the end of the week. Depending on how you want to word it.

Hope this helps!

Step-by-step explanation:

Create you equation:

x = the total amount the water changed

d = the amount of days

x = -4d

Insert the known information into the equation and solve:

x = -4d

x = -4(7)

x = -28

The pizzas you order for home delivery cost $19. The sales tax is 4.9%. What is the total price for the pizza?

Answers

Answer:

23.9

Step-by-step explanation:

you add the percentage to 19

Help!!!! I have no idea how to even begin this

Answers

Answer:

y=-7x+3

since the formula is y=mx+b where m is the slope and b is the y-intercept.

The answer is y=-7x+3

Given the points a ( -2,4 ) and b(7,-2) find the coordinates of the point p on the directed like segment ab that partitions ab in the ratio 1:2

Answers

9514 1404 393

Answer:

  p = (1, 2)

Step-by-step explanation:

We want ...

  (p -a)/(b -p) = 1/2

  2(p -a) = b -p . . . . . cross multiply

  3p = b +2a . . . .. . . rearrange

  p = (b +2a)/3

  p = ((7, -2) +2(-2, 4))/3 = (7 -4, -2 +8)/3 = (3, 6)/3

  p = (1, 2)

please help!! :)

find the area of this parallelogram. Be sure to include the correct unit in your answer.

Answers

Answer:

7x12x13=1092

Step-by-step explanation:

select the correct answer which statement is true​

Answers

there is no questions on It!!

Can someone help me with this question please and thank you

Answers

Answer:

The complete table will be:

x        y

1        5

0.8    4

0.4    2

Step-by-step explanation:

Given rule is:

y = 5x

In the given rule, x is multiplied by 5 to get the values of y. The same rule can be manipulated to find the value of x in terms of y.

[tex]\frac{y}{5} = \frac{5x}{5}\\x = \frac{y}{5}[/tex]

Putting y = 5

[tex]x = \frac{y}{5}\\x = \frac{5}{5}\\x = 1[/tex]

Putting y = 4

[tex]x = \frac{y}{5}\\x = \frac{4}{5}\\x = 0.8[/tex]

Putting y = 2

[tex]x = \frac{2}{5}\\x = 0.4[/tex]

Hence,

The complete table will be:

x        y

1        5

0.8    4

0.4    2

Simplify the following expression where b = -2 and z = 6

4(−2−7)+3

Answers

There is a typo here. We cannot evaluate the given expression if there is no b and z to replace with the given values. Get it?

Please, help me with my homework! Thank you!

Answers

Answer:

i think (17)

Step-by-step explanation:

The perimeter of this compound shape (17) when you add up the sides and find the answer to the missing side.

Triangle ABC is transformed to triangle A' B'C', as shown below:
B
-4 CA-2-10
26
3 4
A
Which equation shows the correct relationship between the measures of the angles of the two triangles? (1 point)
mZCAB = mZC'B'A'
mZBCA = MZA'B'C'
OmZCAB = mZC'A'B'
OmZBCA = mZC'A'B'

Answers

OMZBCA=MZCAB that the one

I know I put An answer I don’t know if that’s it I just accidentally put it

Answers

Answer:

38

Step-by-step explanation:

Answer:

the answer is 36ft² or c

Step-by-step explanation:

hope this helps :)

Carmen has taken out a loan for $800 to buy a car. She plans to pay back the loan at a rate of $40 per month. Ramona has borrowed $500 to buy a car, which she plans to pay back at a rate of $20 per month.

How long will it take Ramona to pay back her loan?​

Answers

25 months, hope this helps!

Answer:

It will take Ramona 25 months or 2 years and 1 month to pay back for the car.

Three machines are used to produce nails. the table displays the total number of nails produced by the three machines over different lengths of time

Answers

Answer:

Step-by-step explanation

they answer would be a whole number because you are multiplying by one thousand

Using the principle of proportionality, the number of nails that will be produced by 1 machine in 1 hour is [tex] 21 \frac{3}{5} \: thousand [/tex]

Let :

Number of machines = mNumber of nails produced = nTime taken = t

Using Principle of variation :

Number of machines α nails produced α 1/time

[tex] m = \frac{kn}{t} [/tex] ; where k = constant of proportionality

Using a row from the table :

t = 15 ; n = 81/5

3 = (81/5)k / 15

Cross multiply :

3 × 15 = (81/5)k

45 = (81/5)k

Divide both sides by (81/5) to isolate k

(45 ÷ 81/5) = k

k = (45 × 5/81) = 25/9 = 2.7777

Substituting the value of k into the expression:

[tex] m = \frac{\frac{25}{9}n}{t} [/tex]

We can use the expression to obtain, the value of n ; when m = 1 and t = (1 hour = 60 minutes)

[tex] 1 = \frac{\frac{25}{9}n}{60} [/tex]

[tex] 60 = \frac{{25}{9}}{n}[/tex]

Divide both sides by 25/9 to isolate n

[tex] 60 \times \frac{9}{25} = n [/tex]

[tex] n = \frac{540}{25} = 21 \frac{3}{5} \: thousand \: nails [/tex]

Learn more :https://brainly.com/question/13218948

Find the slope of the line that passes through the points A(5,-1) and B
(3, -1).

Answers

Answer:

1/6

Step-by-step explanation:

The slope is 0 .........

35.
A box is 1 m long, 40 cm high and 20 cm wide. What is the volume of the box in cubic
centimeters?
I need help please thank you

Answers

Answer:

Step-by-step explanation: First, we need to convert 1m to cm, which is 100. Now, we simply do 100 x 40 x 20, which equals 80,000 cubic centimeters.

Hope this helps :)

I NEED HELP WITH THESE 2 ASAP!!! I WILL MARK BRAINLIEST!!

Answers

Answer:

c and f

Step-by-step explanation:

What would be the best first step to convert 5x-y=7 to slope intercept form?

Question 1 options:

Multiply both sides by -1


-5x from both sides


+5x to both sides


Subtract 7 from both sides

Answers

Answer:

-5x from both sides

Step-by-step explanation:

When converting an equation to slope-intercept form, you need to isolate the y. The first step in isolating the y is to remove 5x from both sides of the equation:

5x - y = 7

5x - 5x - y = 7 - 5x

-y = 7 - 5x

Now it's just -1y on one side of the equation.

Subtract 5x from both sides

Help quick!!!!!!!!!!!!

Answers

9 muffins and 15 pizza pies
Answer: 9 muffins sold. 15 pizza pies sold.

Explanation: a bakery sells 3 muffins for every 5 pizza pies.

If muffins=

Pizza pies=5x

The bakery sold a total of 24 muffins and pizza pies together.

3x + 5x = 24

8x = 24

Dividing both sides by 8, we get..

X=3

Muffins = 3 x 3 = 9

Pizza pies = 5 x 3 = 15.

Hope this helps! :D

Find the slope between the following points (2,5) and (-3,-9)

Answers

Answer: 14/5

Step-by-step explanation: Use Algebra calculator on math papá.com

Answer:

[tex]m=\frac{14}{5}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Point (2, 5)

Point (-3, -9)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute [SF]:                    [tex]m=\frac{-9-5}{-3-2}[/tex]Subtract:                              [tex]m=\frac{-14}{-5}[/tex]Simplify:                               [tex]m=\frac{14}{5}[/tex]

which function represents the relationship between x and y when y=16/5 and x=20 ​

Answers

Answer:

y = (4/25)x

Step-by-step explanation:

We are given;

y = 16/5 and x = 20

Now if y varies directly with x, then we can say;

y = mx

Where m is constant of proportionality

This means that;

16/5 = 20m

Divide both sides by 20 to get;

(16/5) × 1/20 = m

16/100 = m

m = 4/25

Thus,the equation is:

y = (4/25)x

Two planes take off from the same airport at approximately the same time. Plane A has an airspeed of 600 mph
and travels in the direction S 20° W. Plane B has an airspeed of 450 mph and travels in the direction N 35° E.
Which diagram represents the distance, x, between the planes?

Answers

Answer:

B

Step-by-step explanation:

edge 2020

Answer: option B

Step-by-step explanation:

edge 2023

Can you help me with this question please

Answers

Answer:

x should be 101

Step-by-step explanation:

X: -3, 2, 7, 12
Y: 0, 2, 4, 6
Whats the slope ?

Answers

Answer:

The Slope in 7,2

Step-by-step explanation:

There are 2 answers for this
(Please use a comma to separate them)

Emma got 90% of the questions on her history test correct if she answered 27 questions correctly, how many questions did Emma get wrong?

There were (A) questions on the test so she got (B) questions wrong

Answers

Answer:

There were 30 questions on the test so she got 3 questions wrong.

Step-by-step explanation:

Given that:

Correct answers by Emma = 27

Percentage of correct answers = 90%

Let,

x be the total number of questions on test

90% of x = 27

[tex]\frac{90}{100}x=27[/tex]

[tex]0.9x=27[/tex]

Dividing both sides by 0.9

[tex]\frac{0.9x}{0.9}=\frac{27}{0.9}\\x=30[/tex]

There were 30 questions on the test.

Wrong answers = Total questions - Correct answers

Wrong answers = 30-27 = 3

Hence,

There were 30 questions on the test so she got 3 questions wrong.

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