Mathematics Middle School

15 points, Solve the rational exponents, please show the work if you can :)
[tex]2^{x} =128[/tex], [tex]5^{x} = 15,625[/tex], [tex]8^{x} = 4096[/tex], [tex]3^{x} =6561[/tex], [tex]5^{5x} = 3125[/tex], [tex]7^{x} = 2401[/tex], [tex]9^{x} =729[/tex]

Answers

Answer 1

Answer:

1. X=7

2. X=6

3. X=4

4. X=8

5. X=4

6. X=4

7. X=3

Step-by-step explanation: hope this help

$15 Points, Solve The Rational Exponents, Please Show The Work If You Can :)[tex]2^{x} =128[/tex], [tex]5^{x}$

Related Questions

During a field trip, 60 students are put into equal sized groups.
**Describe two ways to interpret 60 ÷5 in this context.

**Find the quotient.

Explain what the quotient would mean in each of the two interpretations you described.

NO WORK = NO CREDIT = REPORT

Thx for helpin <3 !

Answers

Answer:

The quotient would be 12.

Step-by-step explanation:

The first way to interpret it would be: 60 as the total amount of students, divided by 5 students per group which = 12 groups with 5 students in each.

The second way to interpret it would be: 60 as the total amount of students, divided into 5 groups which = 12 students in each group.

The answer to this would be 12

For every 25 litres of petrol a car can run for 60 km.
How much petrol do you need (to 1 DP) to ensure the car has enough petrol of a trip that is 105 km?

Answers

43.75 liters of petrol

Answer:

43.75 litters of petrol

Step-by-step explanation:

105/60 = 1.75

1.75(25) = 43.75

An amusement park charges $8 for parking in addition to $1.25 per ride ticket. Write an equation to represent the total cost to visit the amusement park, then find the number of rides a person can go on, if they have $30. Identify your variables.

Answers

Answer:

Amount of rides = (30 - 8)/1.25

Answer:

c = 8 + 1.25r

the unit used is dollars

r = the amount of ride tickets purchased

c = total cost

a person could could go on 17 rides with 30$

Step-by-step explanation:

To develop the equation:

1. first, you want your total cost on one side. That is c (c =)

2. second, you need to identify the variable that changes the cost in the equation. That would be the amount of ride tickets because it changes the total cost based on how many a person buys. (c = 1.25r)

3. third, you add the variable that never changes, which is the eight dollars for parking (c = 1.25r +8)

In order to solve for a specific amount of money, you plug in the amount in place of your total cost (c) variable. In this case, you would solve 30 = 8 + 1.25r

It would look something like this:

30 = 8 +1.25r

(subtract 8 from both sides)

22 = 1.25r

(divide each side by 1.25)

r = 17.6

(round down because you can't buy a ride ticket with only 60 cents)

and you're done!

hope that helps!

Given the lines shown here, what are two possible equations for this system of equations?

Answers

Answer:

Blue line: either y=1/4x+1, y=1/5x+1, or y=1/6x+1 (depending on how u see where it intercepts in the x-axis.

Black line: either y=1/4x-10, y=1/5x-10, or y=1/6x-10 (depending on how u see where it intercepts in the x-axis.

Step-by-step explanation:

Well because they don't have the numbers it's hard to tell. But they will have the same slope which makes them parallel. So the Y intecept for the blue line would be 1 if it's how it's shown. Then the slope would be one over 4,5 or 6. Then again I cannot see numbers there so... anyways, the equation for the blue line would be about y=1/5x+1. For the black line, I think it intercepts on the -10 for the Y. So if the slope is the same so that they can be parallel then it would be y=1/5x-10. (WARNING: This answer might change if they give you the numbers of the actual line. THIS IS JUST AN ESTIMATE!! THEY ARE POSSIBLE ONES!!!!!) But remember when lines are parallel they have the same slope but different Y-intercept! Hope this helped a bit... ask me if u have any questions.

cause y=mx+b (m is the slope which is rise over run) (b is the y-intercept)

find the slopes from the tables shown.

Answers

Answer:

1. m = 2

2. m = 5/2

Step-by-step explanation:

You need to use this equation:

1. M=2
2. M= 2.5.
You divide how much it goes up on the left, then on the right and then divide them both

Please help me with this last problem

Answers

the answer is b actually

Sandra saves 10% of her salary for retirement. This year her salary was $2,000 more than in the previous year, and she saved $4,400. What was her salary in the previous year?

Complete the equation. 0.10(x + ____) = 4,400

Sandra's salary in the previous year was _____.

HELPPP ITS DUEE TODAYY

Answers

The equation is 0.10 (x+2,000)= 4,400
Answer: 42000

42000 there hope it helps!

I suck at basic Geometry. ( episode 1)

( oh yeah, please explain how to get it)

Answers

8 and the angel is now 72

Jacob was tossing a ball up in the air and catching it. He found that in 25 tries, he could catch it 22 times. He is going to do this 110 more times. Predict how many times Jacob will catch the ball out of these 110 tosses. Help!!!

Answers

Answer:

a lot

Step-by-step explanation:

im smart

While digging, John found a large metal bar that weighed 50 ounces. John
was also able to determine that the bar had 30 ounces of silver. What
percent of the weight of the bar was silver?

Answers

60%
If you take the 30% and divide from the 50% you get .6 multiply that by a 100 you get 60.

30/50=.60
.60x100=60
60%

please help me on this for brainliest

Answers

Answer:

Option A ) 11.1 + 13.9 + m = 40

Answer:

Step-by-step explanation:

HELP :(
Every year, Kate and her sister attend 'The Nutcracker' at the Bloomington Ballet. Last year, orchestra seating cost $50 per ticket. This year, each ticket was 8% cheaper. What was the cost of each ticket this year?

Answers

Answer: 6.25

Step-by-step explanation:

Answer:

$46

Step-by-step explanation:

8% of 50 = 4

50 - 4 = 46

Therefore, 50 - 8% is $46.

Please Help, i need to get this done right now

Answers

Answer:

16 minutes

Step-by-step explanation:

80% of 20 is 16, so thats your answer.

Answer:

25 Minutes.

Step-by-step explanation:

This can be solved simply by long division. First, change 80% into its decimal form, which is 0.80, and is simplified to 0.8. Then, divide 20 by 0.8.

is -5.1 greater than -4?

Answers

Answer:

-4 is greater than -5.1.

Answer:

Step-by-step explanation:

In integers, it's almost backwards. If you are looking at a scale, -4 would be further up, or closer to zero than -5.1.

So, if you are looking at negative numbers, basically, the closer the number is to zero, the greater it is.

Please Solve This
6-x=4(5+x)-4

Answers

Answer:

x= -2

Step-by-step explanation:

the answer to the problem is x=-2

Please help with math ASAP, will give brainliest

Answers

Number 13 is 12 it’s a right angle so you do 90’-42 then you get 48 divide that by 4 your get 12

Answer:

8 : supplementary, 9 : complementary 10 : neither? (i think that 11 could be 24.66666 but Im not sure)

Step-by-step explanation:

The question is on this screenshot:

Answers

x=36° (180/5x because 2x+3x)

!!Giving 15 points and will give brainliest!!Use the second list of random numbers to again calculate the experimental probability of a group having at least three girls. The results using the second list are
10%
the results using the first list.

Answers

Answer:

39% chance for only boys, 61% chance for only girls for the first two questions

the second is a bit trickier,you need a ratio for finding how many would be in 224 groups.

100:224 = 61:x, or 61/100 = x/224

Cross multiply; 100x=13664

Then, divide by 100; x=136.64, or about 137 groups would contain all girls

Step-by-step explanation:

Answer:

39% 61%

Step-by-step explanation:

How would you do 13.54 + 20 + 18.7 + 11.29 using the algorithm

Answers

13.54 + 20 + 18.7 + 11.29

33.45 + 18.7 + 11.29

52.24 + 11.29

63.53

Thirteen less than a number is 70 write the as an expression

Answers

x - 13 = 70. x represents what needs to be subtracted by 13 to get 70.

Plssss Help!!!
Which of the following could be the side measures of a right triangle?
A. 6 ft, 5 ft, 4 ft
B. 8 ft, 7 ft, 6 ft
C. 10 ft, 8 ft, 6 ft
D. 12 ft, 10 ft, 8 ft

Answers

Answer:

Step-by-step explanation:

First, let us try the first on:

sqrt (5^2+4^2)=sqrt 41 so it can't be A

Second one:

sqrt (6^2+7^2)=sqrt 85, no

Third one:

sqrt (8^2+6^2)=sqrt 100 = 10, so it is C

Answer:

Step-by-step explanation:

I will just say how to do C but it is the same for all of the other ones.

First I write a²+b²=c²

Then I put in the numbers and get 6²+8²=10²

After that I do the ² to all of them to get 36+64=100

Next I add 64 and 36, which equals 100

100=100

Help and dont guess or ill report

Answers

Answer:

11 lessons +2/5th of a lesson

Step-by-step explanation:

360-85= 285

285/25 = 11.4

Answer is 11 lessons and 2/5th of a lesson

11 and 2/5 of a lesson

please help!! i need to have this assignment done in 45 mins, thanks for the help :D

Answers

Answer: f(3) = g(3)

Step-by-step explanation:

ok so f and g are unknown numbers and 3 is equal to 3, since f and g are unknown they could be any number so that's why there the same.

Answer:

f(3) > g(3)

Step-by-step explanation:

add 3 into each equation.

f(x) = 4x^4 g(x) = 10 * 2^x

= =

f(3) = 4(3)^4 g(3) = 10 * 2³

Solve each equation.

f(3) = 4(3)^4 g(3) = 10 * 2^3

= =

f(3) = 12^4 g(3) = 20^3

= =

f(3) = 20,736 g(3) = 8,000

f(3) is greater than g(3)

f(3) > g(3)

Hope I helped.

PLS HELPPP
Evaluate the expression for the given value of the variable. -3d - 4 for d=5!

Answers

Answer:

-19

Step-by-step explanation:

substitude d for 5:

-3(5)-4

= -15-4

= -19

Answer:

-19

Step-by-step explanation:

-3d - 4

-3(5) - 4

-15 - 4

-19

Hope this helps :)

How many different triangles can be made with the angles 45 degree, 45 degree, 90degree ?

a two triangles

b infinitely many triangles

c one triangle

d zero triangles

Answers

Answer:

C: one triangle

Step-by-step explanation:

well a triangle = 180°

45+45=90

90+90=180

I think C I hope this helps

( basic geometry)this is easy i just want to make sure my answer is right

Answers

80+65= angle
angle = 145

The angle would be 145

I will give brainliest to right answer

Answers

Answer:

Step-by-step explanation:

Redo !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! the problem is in the imaage

Pretend we have a new student in class. Explain step by step how they need to solve this problem. Make sure to explain the order of operations.

Answers

The answer is: 40
Step by step explanation:

Serafina is solving a number puzzle that involves three integers. Integers, e, f, and g, where e is negative. The product of e and f is -15. The product of e and g is 6. The product of f and g is -10. What are the values of e? *

Answers

Answer:

Step-by-step explanation:

PLEASE HELP ME! TIMED! PLSSSSSSSSSSS

Answers

you would have to buy 11 cans of chili

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15 points, Solve the rational exponents, please show the work if you can :) [tex]2^{x} =128[/tex], [tex]5^{x} = 15,625[/tex], [tex]8^{x} = 4096[/tex], [tex]3^{x} =6561[/tex], [tex]5^{5x} = 3125[/tex], [tex]7^{x} = 2401[/tex], [tex]9^{x} =729[/tex]

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15 points, Solve the rational exponents, please show the work if you can :)
[tex]2^{x} =128[/tex], [tex]5^{x} = 15,625[/tex], [tex]8^{x} = 4096[/tex], [tex]3^{x} =6561[/tex], [tex]5^{5x} = 3125[/tex], [tex]7^{x} = 2401[/tex], [tex]9^{x} =729[/tex]