Why can you not combine the 8a2 and 8a?

Answers

Answer 1

Answer:

you can't add or subtract numbers that don't have the same variable or the same exponent

Answer 2

Answer:

You cannot combine the terms [tex]8a^2[/tex] and [tex]8a[/tex] because they are not like terms, which are terms that consist of both the same power, and the same variable. Seen with the two terms given, they both share the same variable ([tex]a[/tex]), but not the same power ([tex]2[/tex]).


Related Questions

A class has 30 boys and 20 girls. The average age of
boys is 11 yrs and girls 12 What is the
average age of the whole class."

Answers

x = total age of boys

x / 30 = 11yrs

Multiply both sides by 30

x = 330

y = total age of girls

y / 20 = 12

Multiply both sides by 20

y = 240

(240 + 330) / 50 = 11.4 yrs

The average age of the whole class = 11.4 years.

Given:

A class has 30 boys and 20 girls.

The average age of boys and girls is 11 and 12 respectively.

To Find:

The average age of the whole class.

Solution:

Boys = No. of boys × Age

Boys = 30 × 11 = 330

Girls = No. of girls × Age

Girls = 20 × 12 = 240

Average Age = Boys + Girls / Total no. of boys and girls

Average Age = 330 + 240 / 50

Average Age = 570 / 50

Average Age = 11.4

Answer:

Average age of of the whole class is 11.4 .

Which are equivalent ratios to 7:13?
Check all that are true.
D 21:39
72:128
28:52
14:26
36:48

Answers

14:26 and 21:39 and 28:52
14:26, 21:39, and 28:52!

PLEASE HELP ITS EASY suppose you are converting x kilograms to ounces. will the number of oz be less than or greater than x?

Answers

Answer:

greater

Step-by-step explanation:

greater beacause 1 kilo =35.274 ounce

Evaluate the expression for x = -3 and y = 4
3x2 – 2xy

Answers

Answer: -36 is your answer

Step-by-step explanation:

do number 7 and 8 please

Answers

7) [tex]\sqrt[3]{64} = \sqrt[3]{4^3} = 4[/tex]

8) [tex]\sqrt[3]{216} = \sqrt[3]{6^3} = 6[/tex]

(20 points & brainliest)

Answers

Answer:

Perimeter: 42cm

Area: 66cm^2

Step-by-step explanation:

Answer:

P42 cm - P26 cm = 16 cm + 13 cm = P = 26 cm

Step-by-step explanation:

Those are two rectangles. One total and deduct the missing piece.

P=2(l+w)

First: Total 12 by 9 rectangles = P42 cm

Second: Lengths = 12 -5 = 7 and 9-3 = 6 = P=26

Thirs: add the missing lengts! 7 + 6 cm

Evaluate 8/2


please help! very much appreciated if so

Answers

the answer would be 4/four!

Your answer would be four

-16 = -5x + x
please help

Answers

Answer:

x = 4

Step-by-step explanation:

-16 = -5x + x   -->   Collect like terms   -->    -16 = -4x    -->

                   swap the sides of the equation   4x = -16   -->  

   Divide both sides of the equation by -4   -->      x =4  

three solutions to x ≥ 7

Answers

Answer:

x=7

x=8

x=9

(any number greater than or equal to 7)

Step-by-step explanation:

i can’t figure this out

Answers

Answer:

B: 2 1/3 > 2 1/6

is the correct answer

A,C, and D are false answers and are incorrect

Answer:

2 1/3 > 2 1/6

Step-by-step explanation:

5/6 < - 1/3

2 < -2 1/2

negative cannot be bigger than positive

1 1/4 > 1 1/3 if you divide them you would get 1.25 > 1.333333, so 1 1/4 not bigger than 1 1/4

which is longer, 12m or 13yd?

Answers

Answer:

13 yards

Step-by-step explanation:

Answer:

12m

Step-by-step explanation:

12 meters . a meter is approx. 4" longer than a yard, x 12 =48 inches (or thereabouts). a yard is 36 inches long therefore 12 meters is longer

A class has 50 students. 20 students are playing basketball and rest are playing volleyball. The percent of the class playing basketball is?
a) 20 percent
b) 40 percent
c) 60 percent ​

Answers

Answer:

60 percent

Step-by-step explanation:

so 50 is half of 100,right? so that means you can just multiply everything by 2 to make it easier. so then there are 100 students and 40 play basket ball. so that means 40 percent play basketball and that only leaves 60 remaining :)

60% should be right because it’s out of 100 and 100 - 20 is 60

Is 4 a solution of 5m + 7 = -3? Justify your . answer.​

Answers

Answer:

The equality is false because one side is positive and the other side negative.

Step-by-step explanation:

5(4)+7        

Multiply the numbers 4 and 5

20

20+7

add the numbers 20 and 7

27[tex]\neq[/tex]-3

so the number 4 is not the solution

At the local aquarium,one fish tank contained 1,080 clown fish and 60 parrot fish,for a total of 1,140 fish all together. What is the most reduced ratio of total fish to parrot fish

Answers

1,140:60 can you mark brainliest

Suzuki starts her hike at 270 feet below sea level. When she reaches the end of the hike, she is still below sea level at -135 feet. What was the change in elevation from the beginning of Suzi's hike to the end of the hike?

Answers

Answer:

135feet

Step-by-step explanation:

Given ABCE is a rectangle, find the length of AD

Help me

Answers

Answer:

AD = 10

Step-by-step explanation:

It's given that ABCE is a rectangle.

Therefore, measure of opposite sides of the rectangle will be equal.

AB = EC

AB = ED + DC

12 = ED + 4

ED = 8

Measure of side AE = 6

Since, measure of interior angles of a rectangle = 90°

Therefore, ΔEAD will be a right triangle.

By Pythagoras theorem,

AD² = AE² + ED²

      = 6² + 8²

AD = [tex]\sqrt{36+64}[/tex]

      = [tex]\sqrt{100}[/tex]

      = 10

Therefore, measure of side AD = 10 units



I need help
[tex] - 3n + 7 + 2n - 8[/tex]
this is due today​

Answers

-1n+1
simplified to n=1
hope this helps!

P Mar
1 The table shows pairs of figures that are related to each other in the same way.
Figure 1 Figure 2
Oo
Which conjecture best describes how the second figure in each set is related to the first?
A) Figure 2 is always a horizontal reflection of Figure 1.
B) Figure 2 is always a vertical reflection of Figure 1.
C) Figure 2 is always a 90° clockwise rotation of Figure 1.
D) Figure 2 is always a 180° rotation of Figure 1.

Answers

Is that all the answer choices ? Becaus e

could you help me convert 10 miles to feet?

Answers

Answer:

52800 feet

that's the answer.

Answer:

The answer is

52800 feet

Step-by-step explanation:

To convert a distance from miles to feet we use the conversion

1 mile = 5280 feet

From the question the value to be converted is 10 miles

We have

if 1 mile = 5280 feet

Then 10 miles = 10 × 5280

We have the final answer as

52800 feet

Hope this helps you

A boy rolls down a hill on a skateboard. At time = 4 seconds, that boy has rolled 6 meters from the top of the hill. At time = 7 seconds, the boy has rolled to a distance of 30 meters. What is his average speed?

Answers

Answer:

His average speed is 4.75 m/s

Step-by-step explanation:

Here, we are interested in calculating the average speed of the boy.

At time t = 4 seconds, total distance traveled = 6 meters

The average speed here is distance/time = 6/4 = 1.5 m/s

Now at time 30 7 seconds , he has rolled 30 meters

What this actually means is that for the next 3 seconds after the initial 4 seconds, he rolled a total distance of 30-6 = 24 meters. Hence, he rolled 24 meters in the next three seconds

So mathematically, his average speed for the second part of the rolling is 24/3 = 8 meters per second

Conclusively therefore , his average speed will be (1.5 + 8)/2 = 9.5/2 = 4.75 meters per second

Two lines and a ray intersect at a
point as shown in the diagram
Write and solve an equation to find the value of 2 Find the measure of
DAE
110°
A
D
(+4)
30
E

Answers

Answer:

m<DAE = 80°

Step-by-step explanation:

Given that m<CAB = 110°,

m<DAE = (x + 4)°,

m<EAF = 30°,

m<EAF + m<DAE = m<DAF (angle addition postulate)

30° + (x + 4)° = m<DAF (substitution)

(34 + x)° = m<DAF

<DAF and <CAB are vertically opposite angles. Vertically opposite angles are said to be congruent. Therefore:

m<DAF = m<CAB

(34 + x)° = 110° (substitution)

The equation above can be used to solve for x as follows:

34 + x = 110

x = 110 - 34 (Subtracting 34 from both sides)

x = 76

m<DAE = (x + 4)°

Plug in 76, to replace x

m<DAE = 76 + 4

m<DAE = 80°

Help please ! I don’t get it

Answers

at:5

ts:11

oa:5

hope this helps you!

A number between 1 and 3 is chosen 30 times. Results are shown in the table below. What is the experimental probability of picking a number that is NOT odd? *
10 points

Answers

The chances of picking an even number (that is not odd) would be 1 out of 3

Answer:

I'm trying to find it out to

Step-by-step explanation:

Keyani went to the store with a $50 bill. She bought three pounds of turkey for $7.25 per
pound, and a certain number of packs of bread rolls, r, for $3.50 per pack. She receives $10
in change

Answers

What’s the question?

A teacher is researching the effect of what type of font she uses on a test and the scores on the test to see if there is a
relationship. She randomly gives half her classes tests with Times New Roman font and half her classes tests with Comic
Sans font and then tracks their test scores for a semester. Which is this an example of?
-experiment
-simple random sample
-observational study
-convenience study

Answers

Answer:

Experiment

Step-by-step explanation:

By going out of her way to make different tests and giving it to different portions of the class, she's creating and running an experiment.

Please help me with this question

Answers

Answer: C

Step-by-step explanation:

To find f(g(x)), you plug in g(x) into f(x).

[tex]f(g(x))=\sqrt{(8x-12)+8}[/tex]                [combine like terms]

[tex]f(g(x))=\sqrt{8x-4}[/tex]                           [factor]

[tex]f(g(x))=\sqrt{4(2x-1)}[/tex]                      [square root of 4]

[tex]f(g(x))=2\sqrt{2x-1}[/tex]

Now, we know that the answer is C.

What's the greatest common factor of 26 and 104 (gcf)

Answers

I’m not completely sure if this is right but I think it is 26

i need help with this answer

Answers

Answer:

Im not sure but lets play warzone

Step-by-step explanation:

i think it would just be 3.2 and 2 1/3

i need help with answering this question -7/12 + 1/2 =

Answers

Answer:

[tex]-\frac{1}{12}[/tex]

Step-by-step explanation:

Answer:

[tex]\frac{-1}{12}[/tex]

Step-by-step explanation:

[tex]\frac{-7}{12}[/tex] + [tex]\frac{1}{2\\}[/tex]

[tex]\frac{-1}{12}[/tex]

if f(x)=2x^2-5
and
g(x)=5x+7
find
g(f(x))=___x^2+___​

Answers

Answer:

work shown and attached

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