Mathematics Middle School

Please Help Me Out!
Evaluate the expressions. Write your answer as a single base with a positive exponent.

(b^-7)^2 x b^6

a^-10 x a^8

Answers

Answer 1

Answer:

1/b^8, 1/a^2

Step-by-step explanation:

(b^-7)^2 x b^6

= b^-14 x b^6

= b^-8

= 1/b^8 In a fraction

a^-10 x a^8

= a^-2

= 1/a^2 In a fraction

Answer 2

Answer:

1/b^8

1/a^2

Step-by-step explanation:

Related Questions

How is evaluating an expression with fractions like evaluating an expression with whole numbers? How is it different?



pls help

Answers

Answer:

Step-by-step explanation:

How do you evaluate fractions with whole numbers?

Multiply a fraction with a whole number by multiplying only the numerator. For example, 5 x 1/8 = 5/8. Multiply a fraction with another fraction by multiplying the numerators together and the denominators together. For example, 3/8 x 2/5 = 6/40 = 3/20.


Rick is setting up a model train track that is 5 5/6
feet long. No telephone pole is needed at the start of the track. However, along the track, he places a telephone pole
every
5/12
foot apart. How many telephone poles does he need? (Input number values only)

Answers

Answer:

to understand this we will turn 5 5/6 into a inproper fraction 5 can be turned into 60/12 and 5/6 can be turned into 10/12 so this is equal to 70/12.

5 5/6=70/12

in 70 there are 14 pairs of 5's,   14x5=70

this means that he will need 14 telephone pole's

14 multiplied by 5 is 70. So he will need 14 telephone poles.

The y axis is _____________
horizontal
vertical
diagona

Answers

Answer:

It is a vertical line.

Step-by-step explanation:

See below attached picture. The purple line represents the y-axis.

Hoped this helped.

[tex]GeniusUser[/tex]

Please help me with this question!!

Answers

The answer is D
Explanation..
Answer is D

Step by step explanation

i need help i will give 19 po.ints

Answers

-5 7/10

How?

13 4/5

8 1/10

you need similar denominators.

13 4/5 x 2 = 13 8/10

13 8/10 + ? = 8 1/10

8 1/10 + 5 7/10 = 13 4/5

(5 7/10 turned negative bc its below sea level and your technically adding.)

MAY BE INCORRECT!

Answer:

5 7/10

Step-by-step explanation:

you would need to subtract 13 4/5 - 8 1/10 t get positive 5 7/10

(i got this right o my test)

Find the missing value in each row. Use the percent equation.

Answers

Interest =115
Time =1
Principal =50
Rate =%1.5
115

1

50

1.5

hope that helps !

Help meee I don't know what to do anymore--

Answers

Answer:

It is increasing by 40 and the first game will 40 the next is 80 the next is 120 and it keeps going on

Step-by-step explanation:

Help plz:
8. Multiply the following:
a. (x^3)(x^2) =
b. (x^7)(x^10) =
c. (3s^4)(-6s^5) =
d. (-20x)(3x) =

Answers

Answer:

a.x^5 b.x^17 c.SORRY I really do not know (You don't have to make brainliest for this answer) d.-60x

Step-by-step explanation:

a.x^3*x^2=x*x*x*x*x=x^5

b.Quite the same. 7+10=17 x^17

d.-20*3=-60x

:)

Which statement is the correct interpretation of the inequality −3 > −4? (5 points)

A) On a number line, −3 is located to the left of −4.
B) On a number line, −3 is located to the right of 0 and −4 is located to the left of 0.
C) On a number line, −3 is located to the left of 0 and −4 is located to the right of 0.
D) On a number line, −3 is located to the right of −4.

help as soon as possible and you will get brainliest <3

Answers

Answer:

D)−3 is located to the right of −4.

Step-by-step explanation:

Hope It Helps

D)-3 is located to the right of -4

Solve each problem below. Show your work.

1) A cookie factory uses 1 ⅓ bags of flour in each batch of cookies. The factory used 9 ⅓ bags of flour yesterday. How many batches of cookies did the factory make?



2) Last week, a chocolate shop sold 8 ounces of white chocolate. It sold 2 ½ times as much milk chocolate as white chocolate. How many ounces of milk chocolate did the shop sell?


3) Every day, Lindsey’s orange juice stand uses 1 ½ bags of oranges. How many days will 4 ½ bags of oranges last?


4) A bow factory puts 9 bows in each box. It takes 4 1/10 inches of ribbon to make each bow. How many inches of ribbon does it take to make enough bows to fill a box?


5) The cattle at the Washington Farm are fed ½ of a bale of hay each day. The horses are fed ⅗ as much hay as the cattle. How many bales of hay are the horses fed each day?

Answers

1. 7 bags

2. 20 ounces

3. 3 days

4. 3.6 inches

5. 9/10 of a bale of hay
For the first question it’s 7 bags
For the second question it’s 20 ounces
Not sure about the third and fourth question

the diameter of the sun is about 1.4 x 10^6km. the diameter of the planet Neptune is about 50,000km. which expression best approximates the ratio of the diameter of the sun to the diameter of Neptune
A - 3.6 x 10^2
B - 2.8 x 10^1
C - 2.8 x 10^2
D - 3.6 x 10^-2

Answers

Answer:

A. 3.6 × [tex]10^2[/tex].

Step-by-step explanation:

A recipe for 1 batch of cookies uses 5 cups of flour and 2 teaspoons of vanilla.

Complete the double number line diagram below to show the amount of flour and vanilla needed for 1,2,3,4, and 5 batches of cookies. MAKE SURE YOU FILL OUT THE DOUBLE NUMBER LINE COMPLETELY! Then use the double number line to answer these questions:



a) If you use 20 cups of flour, how many teaspoons of vanilla should you use?

b) If you use 6 teaspoons of vanilla, how many cups of flour should you use?

Answers

a) 8 because 5.4=20 so 2.4=8
b)2.3=6 therefore you should use 15 of four ( 5.3=15)

Which expression is equivalent to 4(y-3)

Answers

Answer:

4y-12

Step-by-step explanation:

4(y-3) = (4)(y) + (4)(-3) = 4y + (-12) = 4y-12

4y-12 hope this helps

Solve for a.

a + -12 = 45
A. a = 33
B. a = 42
C. a = 57
D. a = 63

Answers

Answer:

The answer is C

Step-by-step explanation:

a-12=45

a=45+12

a=57

your answer would be 57 :) have a good day

The grass is the number of gallons of white paint that were mixed with gallons of blue paint and various different ratios the number of gallons of white paint mix with 1 gallon of blue paint is ____

numerical answers expected

Answers

The slope/ratio is 2/1
So the ratio between white paint (1 gallon) is blue paint (1/2 gallons)

Answer : 1/2
Person above is correct 1/2

For christmas you received an itunes gift card worth $50. you are super excited and can't wait to download justin bieber newest music at 1.25 per song. based on this information, fill out the chart, graph, and answer.

Answers

50 divided by 1.25 is 400. 40 songs

Answer:

40

Step-by-step explanation:

Monica paid sales tax of $1.50 when she bought a new bike helmet. The sales tax rate was 5%, how much did the store charge?

Answers

Answer

1.50 cents for 5% sales tax on 30 dollars

Step-by-step explanation:

Answer:

$30

Step-by-step explanation:

$30x0.05=$1.50

Please help me find the answer to this question.

Answers

Answer:

6

Step-by-step explanation:

Step one: make 2 2/3 into an improper fraction

2 x 3 = 6

Add 6 to the numerator

gives you 8/3

Step two: divide

16=48/3

(48/3) / (8/3)

48 divided by 8 = 6

Answer:

6

Step-by-step explanation:

Turn 2 2/3 into an improper fraction  8/3

Turn 16 into a fraction  16/1

16/1 divided by 8/3 means flip the second fraction

16/1 * 3/8

Multiply and reduce

48/8 = 6

Find the missing values in the ratio table. Then write the equivalent ratios.

Gnats 2 14
5
Flies 8
28

Answers

Answer:6:14

Step-by-step explanation:I wasn't sure if you were trying to put a mixed number and tell the diffrence and I don't know if this is the right answer.

Gnats 2 14 5 Flies 8 28 6:14

Select all the fractions that are equivalent to 4.05¯¯¯¯¯.
405/99
401/99
81/33
802/198
405/100 (can only give 2 answers, so yea...)

Answers

It is 401/99 and 405/100

But if you only want one answer, then do 405/100

Hope this helps! :)
401/99 and 802/198. this can be proven by dividing 401 by 99, and dividing 802 by 198. you also know these are equivalent fractions since 401/99 times 2 is equal to 802/198 (recognizing this is not necessary, but it could help). hope this helps :)

Please help! This really doesn't make sense to me. I NEED HELP!!!!

Answers

Find the scale of the two similar sides with known dimensions:

45/27 = 1 2/3

Figure A is 1 2/3 times larger than B. Now multiply the similar side of B to find x:

x = 18 x 1 2/3

x = 30

Answer: x = 30

Answer: 30

Step-by-step explanation:

(This is a similarity question)

So,

X/18 = 45/27

Then cross multiplication

X= 45×18/ 27

X= 30

A tortoise moves at a speed of 26 inches in 9 seconds. What is its average speed in feet per hour?
≈ 780 ft/h
≈ 867 ft/h
≈ 855 ft/h
≈ 936 ft/h

Answers

Answer:

867 ft/h

Step-by-step explanation:

26 inches = 2.17 feet

9 seconds = 0.15 of a minute = 0.0025 of an hour

2.17 / 0.0025 = 867

867 ft/h
EXPLANATION
26 in=2.17ft
9 sec = 0.0025 hr
2.17/0.0025 = 867

The total length of fabric needed is 375 m.

65% of 375 meters can be written as 0.65× 375 m = 243.75 m

The length of fabric still needed is 375 m − 243.75 m =

___m

Answers

Answer:

375 - 243.75 = 131.25

Step-by-step explanation:

The length of fabric still needed is 131.25 m.

Hope this helped!

Connor has sold 15 cups of lemonade at his stand and will sell 5 more cups per hours. Which equation is right?

1. y=10x+5
2. y=15x+5
3. y=5x+15
4.y=20x

Answers

3. y=5x+15 is correct
x is the number of hours and since he’s selling 5 per hour it’s 5x. Plus the 15 he has already sold.
3. y=5x+15 is the correct answer

i shall give the right answer brainliest

Answers

Answer i believe its C im sorry if im not right

Step-by-step explanation:

The answer is c because 10^10 meters is 10^13 mm

Help please....If you can, draw on the attachments.

Answers

Answer:

Problem 3: Just 33 draw 4 boxes of 11 and one with 11

Problem 4: 30
Problem 5: Naomi

Step-by-step explanation:

For problem three since you are multiplying the same equation by 4 its basically (2+9)+3(2+9) so you can just cancel out the 2+9 from both and you are left with 3(2+9) which is just 33

For problem 4 100-(12x4)=52 and 10+(3x4) = 22 and when you subtract the two (52-22) you get 30

For problem 5 you get 18 with your equation and so since Carlos' equation gets 9 and Miranda gets 24 and Will gets 35 the only one left is Naomi which also gets 18 just like you.

look at the pic help

Answers

Answer:-68 i think

Step-by-step explanation:

Answer:

the answer is A -68

Step-by-step explanation:

A university currently has 18,000 enrolled students. Due to a discounted tuition, the university expects the number of enrolled students to increase at a rate of 5% per year. If the expected increase occurs, which function represents the number of enrolled students in t years?

Answers

Answer:

f=1/50t+18000

Step-by-step explanation:

Answer:

f=1/50t+18000

im sorry im not sure if this is right

Step-by-step explanation:

Hello, I will give brainiest! What is 2.47 in simplified fraction form? Please work it fully out, step-by-step! Thanks!

Answers

Answer:

247/100

Step-by-step explanation:

can be writen as 2.47 in dedimal form

247/100, I believe it's the answer, I'm not sure

What is the scale factor?

Answers

Answer:

3

Step-by-step explanation:

the second figure is 3 times larger than the first

3 because if you count the boxes or whatever the second scale is 3 times bigger then the first one
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