Mathematics Middle School

What is the value of _a_ in the equation below?

2a + 3 = 4a + 5

Answers

Answer 1

Step-by-step explanation:

hope it is helpful to you

What Is The Value Of _a_ In The Equation Below?2a + 3 = 4a + 5
Answer 2

Step-by-step

Simplifying 2a + 3 = 4a + 5

Reorder the terms: 3 + 2a = 4a + 5

Reorder the terms: 3 + 2a = 5 + 4a

Solving 3 + 2a = 5 + 4a

Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right.

Add '-4a' to each side of the equation. 3 + 2a + -4a = 5 + 4a + -4a

Combine like terms: 2a + -4a = -2a 3 + -2a = 5 + 4a + -4a Combine like terms: 4a + -4a = 0 3 + -2a = 5 + 0 3 + -2a = 5 Add '-3' to each side of the equation. 3 + -3 + -2a = 5 + -3 Combine like terms: 3 + -3 = 0 0 + -2a = 5 + -3 -2a = 5 + -3 Combine like terms: 5 + -3 = 2 -2a = 2 Divide each side by '-2'. a = -1 Simplifying a = -1

Related Questions

The table below gives the price for different numbers of burgers. Do the numbers in the table represent a proportional relationship?

Answers

yes it does.
18/6=21/7=24/8=27/9= 3

Pepino’s pizza charges $8 for medium pizza plus $2 for each topping. How many toppings are on a medium pizza that costs $20?

Answers

Answer:

6 toppings

Step-by-step explanation:

Find how much the toppings cost in total without the medium pizza.

20 - 8 = 12

12 ÷ 2 = 6 toppings

There would be 6 toppings on the medium pizza.

How are convection currents in the mantle (geosphere) and in the oceans (hydrosphere) similar? Or how are they different. Explain one of the two or how their similar and different. Thanks :)
I give brainliest to whichever makes the most sense

Answers

Answer:

They are different because in the mantle, the magma is heated, it becomes less dense and rises. It give off it's thermal energy and cools down, becoming more dense and descend to be heated again.

In the ocean, the tropics warm the water and it travels to the poles to cool down, then returns to the tropics to heat up again.

they are similar in the ways that they move and create energy.

different because

Please help me!!!
At midnight, the temperature in a city was 5 degrees Celsius. The temperature was dropping at a steady rate of 2 degrees Celsius per hour.
Write an inequality that represents t, the number of hours past midnight, when the temperature was colder than -4 degrees Celsius. Explain or show your reasoning.

2.
Tyler is simplifying the expression 6−2x+5+4x.

Here is his work:

6−2x+5+4x

(6−2)x+(5+4)x

4x+9x

13x

His work is incorrect. Explain the error he made.

3.
Simplify the expression 6−2x+5+4x. Hint: Your final expression shoul donly have two terms.

4.
Factor to write an equivalent expression:

36a−16

5.
Expand to write an equivalent expression:

−14(−8x+12y)

6.Diego's family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel is 1.5 gallons or less.

Starting from a full tank, can Diego's family drive the car for 14 days without the warning light come on?

Please help me thank you

Answers

Answer:

I dont really know the answer

Step-by-step explanation:

I dont know

did you figure it out?

In a seventh-grade class of 28 students, there are 16 girls and 12 boys. If one student is randomly chosen to win a prize, what is the probability that a girl is chosen?

Answers

Answer:

65/100

Step-by-step explanation:

3x + 2 = -55 i need all the steps

Answers

Answer:

-19

Step-by-step explanation:

3x+2 = -55

   -2         -2

3x = -55-2

3x = -55+-2

3x = -57

/3      /3

x=-19

Answer:

-19

Step-by-step explanation:

[tex]3x + 2 = -55[/tex]

[tex]3x = -55[/tex]

       [tex]-2[/tex] (2 is negative because it was moved to the other side of the equation)

[tex]3x/3 = -57/3[/tex]   (Divide both sides of the equation by 3 to isolate x.)

[tex]x = -19[/tex]

i need help pls help me

Answers

Answer:

the answer for a is t-10p= x

Step-by-step explanation:

t= tomatoes

p= pounds

x= leftover amount of tomatoes.

2.5x - 10 = y

x, y
ethan amt, zachary amt
2.5, 10, x, y
2.5
10

Michael has five different stocks that he watches on a daily basis. The table shows the change in each stock price in dollars at the end of a trading day.

Change in Daily Stock Prices (Dollars)

Stock A
Stock B
Stock C
Stock D
Stock E
–1.5
2.9
Negative one-half
3 and three-fourths
4.6


A number line going from negative 6 to positive 6 in increments of 1.

What is the correct order of the rational numbers in the table from least to greatest

Answers

Answer:

3

Step-by-step explanation:

3
.....................

What is 3x+8 ?
I believe you simplify.

Answers

Step-by-step explanation:

Simplifying x = 3x + -8 Reorder the terms: x = -8 + 3x Solving x = -8 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. x + -3x = -8 + 3x + -3x Combine like terms: x + -3x = -2x -2x = -8 + 3x + -3x Combine like terms: 3x + -3x = 0 -2x = -8 + 0 -2x = -8 Divide each side by '-2'. x = 4 Simplifying x = 4

Nothing further can be done with this topic. Please check the expression entered or try another topic.
3
x
+
8

A cylinder has a volume of 24 cubic feet. Which of the following could have the same radius and height as the cylinder?

A. A cone with a volume of 72 cubic feet
B. A cone with a volume of 32 cubic feet
C. A sphere with a volume of 18 cubic feet
D. A cone with a volume of 8 cubic feet

Answers

DO NOT OPEN THAT FILE THEY COULD BE TRYING TO HACK YOU, i've seen them send it to a lot of ppl

The taillight of a car is in the shape of a kite whose diagonals are both 15 centimeters. How many square centimeters does the kite occupy?

30
56.25
112.5
225

Answers

The answer is 30
Have a great day!!

Please help i will mark brainliest

as of 2019, forbes magazine has estimated the washington redskins to be worth $3.1
billion, making it the fifth most value football team. Which number represents 3.1 billion?

A) 3.1 x 10 exponent 8
B)3.1 x 10 exponent 9
c)31x10 exponent 9
d)33.1 x 10 exponent 10

Answers

Answer:B

Step-by-step explanation:

3.1x10^9 is putting 9 zero’s behind the 3.1

move the decimal point over 9 spaces which will leave you with 3,100,000,000

= 3.1 Billion

If x is 100, what is the area of the cell phone's range?
BTW, it is in feet.

Answers

3.1415926535897932384626433

H:$/1111.7733744477z !:;7;;):34.

what is the value of x

Answers

Answer:

x = 105

Step-by-step explanation:

Skills needed: Triangle Angle Measures, Solving a One-Variable Equation

1) To get the answer, you need to know that all the angles inside a triangle add up to 180 degrees. This is very important in the future as well.

2) So to find x, we can make the equation: x + 30 + 45 = 180

3) You can combine like terms:

30 and 45 can be combined --> 30 + 45 = 75

4) Based on step 3, you can get: x + 75 = 180

Subtract 75 from both sides, and you will get: x = 105

Hope this helps and have a nice day! :] :) :D

A 6-sided number cube is rolled 120 times and 4 is rolled 23 times. Based on the data, what is the best estimate of the probability that the next roll will be a 4?

A. 1/6
B. 1/3
C. 1/4
D. 1/2

Answers

Answer: A

Explaination: I’ll try my best, let’s round 23 to 20. If we divide 120 by 20, we will get six. 1/6.

Plz help: what is the probability?
Rolling a number that is less than three 5 times in a row on a number cube labeled 1 through 6

Answers

Answer:

whats the options

Answer:

well to me it would be a half and half deal so you might and you might not..

Step-by-step explanation:

need help with this one question

Answers

Answer:

71.6599

Step-by-step explanation:

I think if I’m wrong please tell me

wich ik I’m probably wrong

Simplify −3√27−2√2−3√45−√18 Work Needed

Answers

Answer:

Step-by-step explanation:

27 = 3 * 3 * 3

-3√27 = -3*3√3 = -9√3

Index of the radical is 2. So, after prime factoring, for each two of same number, pull one outside.

-3√45= -3√3*3*5 = -3*3√5 = -9√5

-√18 = -√2*3*3 = -3√2

-3√27 - 2√2 - 3√45 - √18 = -9√3 - 2√2 -9√5 -3√2

Now combine like terms

         = -9√3 - 9√5 -2√2 - 3√2

        = -9√3 - 9√5 - 5√2

Answer:

-9√3 - 5√2 - 9√5

Step-by-step explanation:

-3√27 = -3√9x3 = -3x3√3 = -9√3

2√2 = 2√2

3√45 = 3√9x5 = 3x3√5 = 9√5

√18 = √9x2 = 3√2

-9√3 - 2√2 - 9√5 - 3√2 = -9√3 - 5√2 - 9√5

An octagon has an area of 55.3 square inches. It is a smaller version of an octagon whose dimensions are 7 times larger. What is the area of the larger octagon?

Answers

9514 1404 393

Answer:

  2709.7 square inches

Step-by-step explanation:

If the linear dimensions are a factor of 7 larger, then the area is a factor of 7^2 = 49 larger.

  larger area = 49(55.3 in^2) = 2709.7 in^2

Ok so I have been trying to figure this answer out but I CANT SO PLZZZZZ HELP AND NO LINKS!!!

Graph the following inequalities on a number line.
X ≥ -4

Answers

x is greater then -4 because x is just one
On a number line draw a closed circle on -4 then draw a line from it facing right

Closed circle is greater/less than or equal then the line shows if x could be doing higher or lower number

4/9 kilogram of baking soda costs $2. How much does 1 kilogram of baking soda cost?

please drop an explanation, and equation thanks!

Answers

Ok so we want to cross multiply.
To do this you know 4/9=2$ so now you want to know 1=x$
When you do this you get $5

Answer:

1 kg of baking soda costs $4.50.

Step-by-step explanation:

Write and solve an equation of ratios, as follows:

 4/9 kg            $2

------------- = --------------

    1 kg               x

Multiplying both numerators by 9, we get:

  4 kg          $18

------------ = ---------

   1 kg             x

Cross-multiplying, we get 4x kg = $18-kg.  Solving for x, we get:

        $18-kg

x = -------------- = $4.50

         4kg

1 kg of baking soda costs $4.50.

Alex is setting up an in-line skating course 21 feet long to practice weaving around cones. He wants a cone every 3 1/2 feet. How many cones does he need?​

Answers

Answer:

I think it is 6 cones

Step-by-step explanation:

21 ÷ 3.5 = 6

tysm 30 points!! pls answer correctly

Answers

Answer:

The answer is 4 trust me i'm in high school.

Step-by-step explanation:

Plzz mark brainliest

4. What is the area of the composite shape below?

do it step by step

Answers

Answer:

A=(L×W)

=10ft×8ft=80ft²

Step-by-step explanation:

I hope it helped. I think this is the answer.

a=(pi)(r^2)
a=(l)(w)

half-circle
a=(3.14)(4^2)
a=50.24
50.24/2 (because it half circle)
25.12

rectangle
a=(10)(8)
a=80

total area
80+25.12=105.12

105.12

How can I add ¾? Explain.

Answers

Answer:

Step-by-step explanation:

you can do many things to add 3/4, most common way si thinking of 3/4 3 quarters of your number

you can add 3/4 to 1 which is 1 3/4

1+3/4=1 3/4

or,

you could do

3/4 OF 10 is 3 quarters of 10 which is 2.5x3 or 10 -2.5 which equals,

7.5

Answer:

You can add 3/4 by adding as a decimal so 3/4 of 100 is 75 so it would be .75

Step-by-step explanation:

what is 3/10x 5/7
a.15/70
b.20/70
c.8/17
d.15/17

Answers

Answer:

Option A is your answer ☺️☺️☺️

What is 2+4+6-9+17-4=x

Answers

Answer:

x = 16 or 16 = x

Step-by-step explanation:

2+4+6-9+17-4=x

6+6-9+17-4=x

12+17-9-4=x

29-9-4=x

20-4=x

16=x

Answer:

[tex]x = 16[/tex]

Step-by-step explanation:

[tex]2 + 4 + 6 = 12[/tex]

[tex]12 - 9 = 3[/tex]

[tex]3 + 17 = 20[/tex]

[tex]20 - 4 = 16[/tex]

HELP QUICK!
...........................
Find x.

Answers

Answer:

i think its 2 ft i’m not sure tho

Step-by-step explanation:

Answer:

The answer is 1.75.

Step-by-step explanation:

Since 3 is 1/4 of 12, you have to divide 7 by 4 to get your answer. Hope this helps

can somebody please help me and explain a little bit? :(

Answers

Median: number in middle
Arrange in lowest to highest
1, 2, 3, 3, 4, 6, 7, 8
Cross out numbers until you reach the middle two
3 and 4, what’s between them?

Solution: 3.5
The median is the middle number in a set of numbers.
For this set of numbers, the median would either be 7 or 1 because the set of numbers is uneven

no one get the answer right so i will repost this again

Answers

Answer: the rectangle is 5 and the other one is i think 135  

Step-by-step explanation:

rectangle is 5, not sure about the other inw
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