Mathematics Middle School

Can I get help simplifying these three questions? Thanks!
First Question 3a–a+18–a
Second Question (a+3)–(a+2)
Third Question 43+a–2a

Answers

Answer 1
1. 3a - 1 + 18 - a

So you can reorder these, as long as they keep the sign in front of them.

3a - a - 1 + 18, you can reorder it to.

And then just add or subtract.

2a + 17

2. (a+3) - (a + 2)

First you want to open the parenthesis.

To do that, check the symbol before the parenthesis.

If it's a minus, reverse the operator inside the parenthesis. If it's a plus, do nothing.

So just,

a + 3 - a - 2

Then reorder again

a - a + 3 - 2

1

3. 43 + a - 2a

Just subtract, a - 2a, to get -a.

So,

43 - a

Related Questions

What is the slope of the line on the graph?



Enter your answer in the box.



Answers

I know this is WAY late.. but this is for whoever finds this in the future.

The answer is: -2

:)

Answer:

-2

Step-by-step explanation:

i took the test

A fraction with fractions in either the numerator or the denominator or both is called a _____.

mixed fraction

complex fraction

compound fraction

parallel fraction

Answers

Answer: Parallel fractions

Step-by-step explanation:

evaluate m+n for m=5 and n=4

Answers

The answer is 9 since m and n are added together, you add the value of them together, which is 5 and 4, which makes 9  


The answer is 9 because you put the 5 in for the M & then 4 for the N

write as an algebraic equation
Jimmy ran m miles in t minutes. What was his speed?

Answers

Final answer:

To find Jimmy's speed, we use the formula speed = distance/time and represent his speed as m miles / t minutes.

Explanation:

To find Jimmy's speed, we need to use the formula speed = distance/time. In this case, Jimmy ran m miles in t minutes. So, his speed can be represented as:

Speed = m miles / t minutes

Which conditional statement is true?

A. If two angles are acute, then they are complementary?
B. If an angle is acute, then its measures is less than 90 degrees

Would it be A?

Answers

Im not that sure but I think it's A
It would be B because we don't know if the two angles that are acute are the exact same

Ron works 5 hours for a total of $300. He deposits all of his money in his account. He is trying to save $500 for a new LED TV. How many hours must he work to take home $500, if he saves all of his earnings

Answers

He must work about 4-5 more hours, and if he works 4 hours, he would earn $240, and $300 + $240 = $540. Or, if he works for 5 hours, it would equal $300. $300 + $300 IS $600, and his savings may be $60 or $100. Your Choice.

You and two friends are playing basketball. You make 7 out of 15 shots. Your first friend makes 6 out of 10 shots and your second friend makes 5 out of 12 shots. Who is the better shooter? How would you solve this problem using what you know about rational numbers?

Answers

First, you will need to find the percentage of shots made for each person, or you can find the least common denominator. This is because it makes it easier to see how the numbers compare to each other in size. You can find the percentage of shots made by looking at how many shots a person made and dividing it by the total shots that person made, which us the denominator. Then, you would take the decimal and move it two places to the right. Once you find the percentages of all three people, you can then compare the percentages to each other. In this case, the higher the percentage, the better the shooter that person is.

how did people affect the environment in hurricane irma? History

Answers

It was trashed because of all of the peoples stuff in there homes was now on the streets
This my opion but how people caused hurricane Irma well i think if people treated the earth with more care half of all the storms we have lately like the pullotion in the air and glob warming which is actually happing which human caused so i would say people have a large part in most natural disasters like hurricane irma

Relationship A has a greater rate than Relationship B. These numbers represent Relationship B. Hours worked: ( 2 ) ( 4 ) ( 5 )  ( 8 ). Amount paid: ( 30.40 ) ( 60.80 ) ( 76 ) (121.60 ). Which equation could represent Relationship A? Hours worked is represented by x and Amount paid is represented by y. Select each correct answer.
( y = 14.9x) ( y = 16.4x ) ( y = 15.2x  ) ( y = 15.4x )

Answers

The data for relationship B is shown in this table.
Hours           Amount
Worked        Paid
-----------       --------------
     2             30.40
     4             60.80
     5             76
     8             121.60

A graph of the data is shown below.
It passes through (0,0).
Its slope is
(121.6 - 30.40) / (8 - 2) = 15.2
Therefore its equation is
y = 15.2x +0 = 15.2x

Answer: y = 15.2x

Answer:

I took the test and. this is what I got

Step-by-step explanation:

the triangles shown below must be congruent. right awnsers only please.

Answers

Answer: false

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

Properties of congruent triangle :

SSS -"side, side, side" and means that we have two triangles with all three sides equal.

ASA- "angle, side, angle" and means that we have two triangles where we know two angles and the included side are equal.

SAS -"side, angle, side" and means that we have two triangles where we know two sides and the included angle are equal.

AAS -"angle, angle, side" and means that we have two triangles where we know two angles and the non-included side are equal.

Since the given triangles does not satisfy any property

So, the given triangles are not congruent.

So, Option B is true

Hence False

calculate the rise and run to find the slope of each line

Answers

First you count UP/ DOWN how many units until you get to the point the dot is at. For the first one, your rise (by counting up) is 4. Than you count to the side (your run) to the dot. This would be 2. So your slope is 4/2. Which is equal to 2/1. 2/1 equals 2. So your slope is 2.
The first one 2 and the second one is 4/-5

Find the range 4.9,5.7,6.0,5.3,4.8,4.9,5.3,4.7,4.9,5.6,5.1

Answers

4.5 is the range. because almost all the answers stay around 4.5
9 is the highest ND 0 IS THE LOWEST and when you subtract them to get 9 so 9 is your range

jeff rakhnovich buys a 500000 t-bill at 2.5% discount for 36 weeks find the effective interest rate of APR assume 52 weeks per year

Answers

This is solved as follows: $500,000* ((.025 * 36/52)+ 1)^-1 = $491,493.38 The effective interest APR is simply the bracketed term above which when evaluated will yield %1.73.

write a fraction equivalent to 60mi/4hr that has 2 in the denominator

Answers

30mi/2hr

Explanation: just divide both by two. It won’t always work like this. You can’t always divide something by 2 to get 2. Find a number that will go into the denominator two times and divide the numerator by it also.

Round 3.4 to the nearest gallons please.

Answers

I'm assuming the 3.4's units are gallons, too. If you're rounding to the nearest whole gallon, that means you're going to have round 3.4 to the nearest whole number. Think about the two whole numbers 3.4 lies between: 3 and 4. Which one of those is 3.4 closer to? That's where you'll want to round.

Tommy plotted the opposite of one. Alicia plotted the opposite of two.Which Number is greater in value ? Explain.

Answers

The opposite of 1 is -1. The opposite of 2 is -2. (-1) > (-2), so Tommy plotted the greater number in value.

are the given lines parallel y=-5 y=3 ? how do you know? ASAP TY

Answers

Yes, the given lines are parallel as the value for x is both cases is equal to 0.
Final answer:

The lines y = -5 and y = 3 are parallel because they are both horizontal lines with a slope of 0. This is the same case with lines Y2 and Y3 from the reference provided; they are parallel because they share the same slope.

Explanation:

The lines y = -5 and y = 3 are indeed parallel lines. This is because they are both horizontal lines, which means their slopes are both 0. In mathematics, two lines are parallel if and only if their slopes are equal. In the case of these two lines, since they do not have a variable component (x), they are straight horizontal lines, meaning their slopes are equal and thus, they are parallel.

To illustrate this, contrast it with the given lines in the reference; line Y2 = -173.5+ 4.83x − 2(16.4), and line Y3 = -173.5+ 4.83x + 2(16.4), whereby y = -173.5+ 4.83x is the line of best fit. Y2 and Y3 have the same slope, which shows these lines are also parallel as they share the same inclination and distance apart at all points.

Learn more about Parallel Lines here:

https://brainly.com/question/29762825

#SPJ2

in a comparison taste test of two drinks 780 people preffered Cranberry blast. Only 220 people preferred Melon splash. How many percent of people like cranberry blast?

Answers

78% more people preferred Cranberry blast. You would add 780 to 220, giving you an even 1,000. Since you want to find the percent of people who perferred Cranberry Blast, you would make a fraction of 780 and 1000, giving you 780/1000. To find the percent, simply do 780/1000, since a fraction can also be represented as a division problem. Hope this helped!!! 

What are fractions that equal 10

Answers

Some examples are 30/3, 40/4, 50/5, 60/6.

Hope this helps!
10/1 would equal ten because if you simplify 10/1, it would be 10

Identify the type of transformation given the rule R(x, y) = (–x. –y). a. horizontal translation c. reflection across the x- or y-axis b. vertical translation d. 180° rotation

Answers

It's
d. 180° rotation

Equation 13.00 x 0.53

Answers

the answer is 6.89 because calculators
The answer is 6.89. Just multiply them together.

At the end of a party, 3/4 cup of dip is left. Jim divides 4/5 of the leftover dip equally between 2 friends. How much dip does each friend get?

Answers

Final answer:

Each friend gets 3/10 cup of dip.

Explanation:

To calculate how much dip each friend gets, we first need to find the amount of dip Jim had after dividing.

Since 3/4 cup of dip was left and Jim divided 4/5 of that dip, we can calculate it as follows:

Amount of dip Jim divided = (3/4) * (4/5) = 3/5 cup

Since there are 2 friends, we divide the amount of dip Jim divided equally:

Amount of dip each friend gets = (3/5) / 2 = 3/10 cup

Therefore, each friend gets 3/10 cup of dip.

Which answer shows this equation in standard form?

7 – 3(x – y) = –5x + 2

A.
–8x + 3y = –5

B.
–2x – 3y = 5

C.
2x + 3y = –5

D.
2x – 3y = –5

Answers

B I believe. Because it is the only one that has -2 which should be part of the problem

Question 15



Leo bought a bulldozer for $63,103. The value of the bulldozer depreciated at a constant rate per year. The table below shows the value of the bulldozer after the first and second years:

Year
1
2
Value (in dollars)
58,054.76
53,410.38


Which function best represents the value of the bulldozer after t years?

f(t) = 58,054.76(0.92)t
f(t) = 63,103(0.08)t
f(t) = 63,103(0.92)t
f(t) = 58,054.76(0.08)t

Answers

The function is
f(1) = 63,103(0.92)^1
F (1)=58054.76
Solve for r (rate of depreciation)
58054.76=63103 (r)^1
Divide both sides by 63103
R=58,054.76÷63,103
R=0.92 rate of depreciation

So the function best represents the value of the bulldozer after t years is
f(t) = 63,103(0.92)t

Hope it helps!

Answer:

c f(t) = 63,103(0.92)t

Step-by-step explanation:

A number divided by -9 is 16. What is the missing number?

Answers

x/(-9) = 16

x/(-9) x (-9) = 16(-9)

x = 16(-9)

x =  - 144

hope this helps
144









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The speed of light is about 3x10 to the 8th power meters per second. About how far can light travel in 30 minutes?

Answers

5.4x10^11 metres per second or 540,000,000,000 metres per second

Last week,a share of stock gained a total of 1.64 points.express this gain as a mixed number in simplest form

Answers

The mixed number for 1.64 is 41/25

Convert the fraction into a decimal: 35/10 =

Answers

35/10

=7/2

= 7divided by 2

 = final answer 3.5

Answer: 3.5

Step-by-step explanation: In order to write [tex]\frac{35}{10}[/tex] as a decimal, we need to find a fraction that is equivalent to [tex]\frac{35}{10}[/tex] with a 100 in the denominator. Notice that if we multiply the numerator and denominator of [tex]\frac{35}{10}[/tex] by 10, we get the equivalent fraction [tex]\frac{350}{100}[/tex] which we can now write as a decimal. Remember that the hundredths place is two places to the right of the decimal point. Therefore, we can write [texfrac{350}{100}[/tex] as 3.5.

how many solutions does the equation have? 6x+4x-6=24+9x

Answers

Combine like terms.
10x+6=24+9x

Put variables to one side and the constants to another.
x=-18

There is only one solution.

Hope this helps!

For the proportional relationship y = -5x, what is the ratio of vertical change to horizontal change? Will the graph of the line increase or decrease? A. -51 The graph increases from left to right. B. -50 The graph increases from left to right. C. -51 The graph decreases from left to right. D. -50 The graph decreases from left to right.

Answers

The given proportional relationship is y = -5x.
Therefore the ratio
y/x = -5 = -5/1

If x changes by 1, then y/x = y/1 = -5.
This means that y changes by -5 when x changes by 1.
The ratio of vertical change is -5:1

The standard equation for a straight line is
y = m*x + c
where
m = the slope,
c = the y-intercept.

Therefore the given relationship is a straight line with a negative slope of -5. This means that y decreases as x increases.

Answer: C
-5:1
The graph decreases from left to right.
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