simplify 2 a + 4 - 7 a + a

Answers

Answer 1

2a + 4 - 7a + a

2a -7a +a +4

-5a + a +4

-4a + 4

-4a + 4 is your answer

hope this helps

Related Questions

simplify the expression 3^-2/3^-4

Answers

3^-2/3^-4 is = 9 wow that was hard XD

Applying the Power Rule: [tex]x^m[/tex]÷[tex]x^n[/tex] = [tex]x^{m-n}[/tex]

[tex]3^{-2}[/tex]÷[tex]3^{-4}[/tex] = [tex]3^{-2--4}=3^{-2+4}=3^2=9[/tex]

Jeffery read a book with one-fifth the pages of the book Toby read. Which variable expression represents the number of pages in the book Jeffery read?

Answers

t/5 since toby only read 1 fifth of it

Answer:

1/5

Step-by-step explanation:

i took the test its right

how to convert unit rates

Answers

When you talk about the speed of a car, you usually say something in miles per hour. For example, you say, 'I drove 40 miles per hour.' Normally, you don't say, 'I drove 120 miles per 3 hours.' Figure out how to convert a rate like 120 miles per 3 hours to theunit rate of 40 miles per hour by watching this tutorial.

How do I do this (Comes With Picture) if someone could help me with this that would be amazing :)

Answers

The error occurs in step 3. The student did not distribute the negative properly to every term inside the parenthesis. Below is one proper way to solve for y

[tex]3 - \left(y + \frac{1}{2}\right) = 8[/tex]

[tex]3-3 - \left(y + \frac{1}{2}\right) = 8-3[/tex]

[tex]-\left(y + \frac{1}{2}\right) = 5[/tex] <--- Note the negative and the parenthesis

[tex]-y - \frac{1}{2} = 5[/tex] <--- Note how we have -1/2 and not +1/2

[tex]-y - \frac{1}{2}+\frac{1}{2} = 5+\frac{1}{2}[/tex]

[tex]-y = 5\frac{1}{2}[/tex]

[tex]y = -5\frac{1}{2}[/tex]

So the proper final answer is [tex]y = -5\frac{1}{2}[/tex]
(this is a mixed number which converts to the decimal number -5.5)

Which number is prime? Choose each correct answer. 55 56 57 58 59 60 61

Answers

59 and 61 are prime
answerss

The prime numbers are 59 and 61

Which table best represents the steps to solve the equation 8 + = 4?

Answers

Usaully if you add a larger number with a smaller negative number you will get your answer is 8 + -4+4

At a bake sale, brownies were sold for .75 each, cookies were sold for .50 each. There were 10 more cookies sold than brownies. The total amount earned was 40. How many brownies and cookies were sold

Answers

75b + .5c = 40 c = b + 10 .75b + .5(b + 10) = 40 .75b + .5b + 5 = 40 1.25b = 35 b = 28 c = 38.

indira, bonnie and chang all work at the same pet store. indira works every other day. bonnie works every fourth day. chang works every fifth day. today they all work together. how many days will it be until they work together again?

Answers

This is asking for the LCM between 2,4, and 5. It is 20. So, the answer is 20 days.

Hope this helps!

What is a multiplication story for 2x6=

Answers

2x*6=
x=12
2*6=12
But either way. I think that's the answer

A sidewalk is built 12 bricks wide by laying each brick side by side. How many inches wide is this seidewalk if each brick measures 3 7 over 8 inches wide ??

Answers

1 brick = 37/8
37/8 x 12 = 55.5 inches wide

Hope this helps!! :)

It is a commonly used guideline that for the average American child, their maximum adult height will be about twice their height at age 2. Suppose that Micah’s adult height fits the following equation a = 2c – 1, where a represents his adult height and c represents his height at age 2. At age 2 Micah was 35 inches tall. What is Micah’s adult height? Write and solve an equation.

Answers

a=2c-1
a=2(35in)-1
a=70-1
a=69in.

Final answer:

The question is about predicting Micah's adult height based on his height at the age of 2. Using the formula a=2c-1 where 'c' is the height at age 2, we substitute 'c' with 35 (his height at age 2) and calculate. Thus, Micah's adult height is predicted to be 69 inches.

Explanation:

The question asks about Micah's adult height based on the given equation, a = 2c – 1. In this equation, 'a' represents Micah's adult height and 'c' represents his height at age 2. Given that Micah's height at age 2 ('c') is 35 inches, we can substitute this value into the equation to find Micah's adult height ('a').

So, substituting c=35 into the equation gives us: a = 2*35 - 1. Calculating this results in: a = 70 - 1. Therefore, Micah's adult height is predicted to be 69 inches.

Learn more about Height prediction here:

https://brainly.com/question/22740770

#SPJ2

Round 8.984 to nearest hundredths, tenths, ones and tens

Answers

Hundredths: 8.98
Tenths: 9 whole
ones: 9 whole
tens: there is none

Hundredths = 8.98

Tenths = 9.0

Ones = 9

Tens = 10

Hope I helped :)

10 power of 1 x 0.23

Answers

10^1=10
10x0.23=final answer=2.3

What would be the third step in simplifying the expression 4 2 ÷ (2 · 9) + 5?
divide
exponent
add
multiply

Answers

P
E
M
D
A
S

okay since the first step is parenthesis, the next step would be exponents but you have none so you skip to multiplication, then you divide

divide is your answer

Jeanie has a 3/4 piece of ribbon. She needs one 3/8 yard piece and a 1/2 yard piece. Can she cut the piece of ribbon into the two smaller pieces? Explain

Answers

Jeanie cannot cut the piece of ribbon into two smaller pieces.

[tex] \frac{3}{4} = \frac{6}{8} [/tex] if you multiply the numerator and the denominator for [tex] \frac{3}{4} [/tex] by 2.
She needs [tex] \frac{1}{2} [/tex] yard piece, which is [tex] \frac{4}{8} [/tex] if you multiply the numerator and the denominator for [tex] \frac{1}{2} [/tex].
Now that all the numbers have the same denominator, you can subtract the numerators which is: 6 - 4 - 3 = -1
This means that she cannot cut the ribbon into two smaller pieces.

~I hope this helped!!

one third of a number

Answers

Well the thing is you didn't tell us which number but if it is 12 then i strongly believe that the answer is 3/9

One third of a number is same as n/3 or 1/3 · n

Which problem can be solved using base-10 blocks? A. Simplify x − (x + 2). B. Model the sum of 950 and 26. C. Order 2.7, 3.1, and 2.9 from greatest to least. D. Plot the points (2, 5) and (4, 9).

I need help ASAP

Answers

The answer is B.ejdjshsjdj

What is 12.405 as a mixed number in simplest form

Answers

Final answer:

To express 12.405 as a mixed number in simplest form, the whole number part is 12, and the decimal .405 is equivalent to 405/1000, which simplifies to 81/200, resulting in the mixed number 12 81/200.

Explanation:

To express the decimal 12.405 as a mixed number, we first recognize that the number to the left of the decimal point is the whole number part, which is 12. The decimal part is .405, which we need to convert to a fraction. Since .405 has three decimal places, it is equivalent to 405/1000. However, we must simplify this fraction to its simplest form.

We find the greatest common divisor (GCD) of 405 and 1000, which is 5. Dividing both numerator and denominator by 5, we get 81/200. Thus, the mixed number equivalent of 12.405 in simplest form is 12 81/200.

An important note to consider is that when working with significant figures, the number of decimal places in the original number is maintained in the fractional part of the mixed number. Therefore, in a scientific context, the number of significant figures can influence the final result.

a
22 degrees

b
3 degrees

c
40 degrees

d
20 degrees

Answers

Bisects means it divides in two equal parts. So:

7x - 1 = 4x + 8
3x = 9
x = 3

This problem isn't over, though.

7(3) - 1
20

Because one of the parts equals 2, the whole thing equals double of that, or 40

Hope this helps!

the answer is d.

7x-1=4x+8

3x-1=8

3x=9
x=3

7(3)-1=20°

Solve: 2x + 12 - 7x = -2

Answers

x=14 over 5 that's the answer I got when I did it on paper

2x + 12 - 7x = -2
1. you can either minus or add 7x to 2x
2. which gives 9x + 12 = -2
3. minus 12 on both sides
4. gives you 9x +-14
5. divided -14 by 9

Answer is -1.55 repeatting

What are the dimensions of his bedroom

Answers

There are several possibilities to this. Square feet it just area. Some dimensions are 2ft and 90ft, 4ft and 45ft, or possibly 9ft and 20ft.

6/20
3/15
15/20
16/32
21/45
Simplest form please

Answers

3/10
1/5
3/4
1/2
7/15
Thanks (:

Salutations!

To simplify fractions, you can either do the prime factorization method, or find the same factors for the simplified numbers.

6/20 = 3/10

3/15 = 3/5

15/20 = 5/6

16/32 = 1/4

21/45 = 7/15.

Hope I helped (:

Have a great day!

What is the value of y?

Answers

64............................

well you know no matter what a triangle will always equal 180 degrees so you take 37 + 79 and you get 116 which you then subtract from the 180 you know a triangle will always be and you will get y=64

Selena bought 5.62 pounds of meat for $3.49 per pound. What was the total cost of the meat?

Answers

Pounds multiplied by the unit price will solve this problem. Be sure to round your answer to two decimal places; it's money $.

5.62 lbs x $3.49/lb = $19.61

Simply multiply 5.62lb by $3.49/lb = 19.6138 or 19.61 in short form.

Y times y of the power to 4

Answers

y * y^4 = y^5

Remember that y equals y^1. Also when multiplying exponents with the same base, add the given exponents. 1+4=5

Final answer: y^5

A store manager timed Janette to see how long it would take her to fold and put away a sweater, a shirt, a pair of pants, and a scarf. It took her 26.1 seconds for the shirt, 24.3 seconds for the sweater, 32.8 seconds for the pants, and 18.2 seconds for the scarf. What was the average time it took Janette to fold and put away all four items?

Answers

The Average, or the mean of the times, is the sum of the times divided by the number of times.

26.1 + 24.3 + 32.8 + 18.2 = 101.4
101.4 / 4 = 25.35 seconds.

25.35 seconds is the average

25.35 seconds.
26.1+24.3+32.8+18.2=101.4
101.4/4 (the number of items)=25.35 per each item

Please help me on number 12 :)

Thank you ! :)

Answers

2 divided by 5

2/5

Hope i helped =)

To find 12 times 13, I double 13 and halve 12 and then multiply

Answers

No just multiply them 12 times 12 is 144 just add 12 so it could be 12 times 13 and it would be 156

13
x12
——-
26
+130
——-
156

So first you do the back of 12, 2 times the back of 13, which is 6. Then the back of 12, 2 times the front of 13, which is 2. So you get 26. Then you go to the next line and put a zero, then the same thing as you did with the back of 12, but with the front, which is 1. So 1 times 3 and 1 times 1, so you get 13 and the zero you added earlier, 130. So you get 26 and 130, add them to get 156.

Richie has 27apple he buys 12 more apples how many apples does he have how ?

Answers

27 + 12
39

Hope this helps!

Richie has 39 apples

Express 42 and 150 as a product of its prime numbers.

Answers

42 = 3 x 2 x 7

150 = 5 x 5 x 3 x 2

hope this helps

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