Explain how you can use mental math to
calculate 2^8.

Answers

Answer 1

Answer:

think about what 2 times 8 equals

Step-by-step explanation:


Related Questions

Could somebody solve this problem for me- step-by-step? I would appreciate it!

Answers

Answer:

The first step would be to add the problem.

The second step would be for us to answer it.

The third and final would be appreciation.

402/3333 simplified please

Answers

Answer:

134/1111

Step-by-step explanation:

Answer:

Reduce the expression, if possible, by cancelling the common factors.

Exact form:  [tex]\frac{134}{1111}[/tex]

Decimal form: 0.1206...   (repeating)

Find x

Please show your work

Answers

Answer:

I think it would be

A= 3/5

B= 7/6

When President Obama stated, "Transparency and the rule of law will be the touchstones of this presidency," he meant that

Answers

Answer:

that what

Step-by-step explanation:

6x² +12x²y + 6xy² chỉ tui đi

Answers

Answer:

6x(x+2xy+y^2)

Step-by-step explanation:

pls help me with this if you can

Answers

1) Let L = the larger # and S = the smaller #.

A large # is 5 more than twice a smaller #.....This gives Eq 1) L = 5 + 2S

Their sum is 80...This gives Eq 2) L + S = 80.

Substitute Eq 1) into Eq 2), you get

L + S = 80

5 + 2S + S = 80

3S = 75

S = 75 / 3 = 25

L = 5 + 2S

  = 5 + 2(25)

= 5 + 50

 = 55

-----------------------------------------------------------------------------------------------------------------

2) [-7,2)

- Vocabulary

· Interval

A set of values between two endpoints.

· Inequality

A mathematical expression which shows that two quantites are not equal.

Answer:

1) x = 25

2) 2(25)+5 = 55

-12<= x < 6

x <2 and x <= -7

Step-by-step explanation:

1) x

2) 2x + 5

x + 2x + 5 = 80

3x = 80 - 5

x = 75/3

x = 25

-24 <= 2x - 10

-24+10 <= 2x

-14/2 <= x

-7 <= x

2x -10< -6

2x < - 6 + 10

x < 4/2

x < 2

1.
A train travels at a constant rate of 45 miles per hour.
a.
What is the distance, d, in miles, that the train travels in t hours?
How many miles will it travel in 2.5 hours?
b.

Answers

112.5 miles in 2.5 hours

Answer:

11.25 miles in 2.5 hours

Step-by-step explanation:

speed × time = distance

45 × 2.5 = 112.5

45 is the speed

2.5 is the time

11.25 is the distance

ALL FELLOW PEOPLE I NEED HELP ASAP ! WILL MARK BRAINLIEST!!EXTRA POINTS !!!!

Answers

Answer:

Question 1:

A) Perpendicular

Question 2:

B) y = -8 and y = 2

can someone please help me with this

Answers

Answer:

3. How many faces do each of the following have?

cube - 6 facessquare pyramid - 5 facestriangular pyramid - 4 facespentagonal pyramid - 6 faces

Hope this helps!

NEED ASAP hurry plz

Write a story that would explain the graph below.

Answers

Answer:

A kid leaping happily to home after school

The graph represents the relationship between height and time.

Given that,
A curve has been shown we have to explain the behavior of the curve.

What is a graph?

The graph is a demonstration of curves that gives the relationship between the x and y-axis.

Here,
The curve is shown, where the vertical axis represents the height above the ground and the horizontal axis represents the time. Let's assume a plane of paper is flying, the plane getting a rise and then a certain down and again rise and down as according to the height of the plane.

Thus, the graph represents the relationship between height and time.

Learn more about graphs here:

brainly.com/question/16608196

#SPJ2

Solving quadratic equation by Factorization
[tex]10x {}^{2} - x = 2[/tex]
Help me pleasee​

Answers

[tex]x = - \frac{2}{5} \\ x = \frac{1}{2} \\ \\ \\ hope \: \: it \: \: helps \: \\ \\ see \: \: the \: \: attachment[/tex]

Arrange in ascending order:

7,85,460 ; 7,58,406 ; 7,85,046 ; 7,85,640.​

Answers

Answer:

7,58,406 ,   7,85,046 ,    7,85,460 ,   7,85,640  

Step-by-step explanation:

In general, the diameter of a tree trunk increases with age.



What could be the correlation between the diameter of the tree trunk and age for all trees?


0


0.7


−0.7


1

Answers

The third option
Hope this helps love!

answer is 0.7 ...............

5 miles in 1 1/2 hours unit rate

Answers

Answer: 3.33 miles/hr

Step-by-step explanation:

(5 miles)/(1.5 hr) = 3.33 miles/hr

What is the sum of the 15th square number and the 4th square number?

Answers

Answer:

241

Step-by-step explanation:

15th squared number = 225

4th squared number = 16

225 + 16 = 241

There are 15 pieces of the same size candy in a bag. Four are banana flavored, three strawberry flavored, six cherry flavored, and two orange flavored. What would be the probability of picking a banana, cherry, or a strawberry flavored candy from the bag? Write your answer as a simplified fraction in a/b form.

Answers

Answer:

The answer is 7/15

Place the following steps in order to describe how to solve the following equation: ​ ​ 2(2x+3)-2=5

Answers

Answer:

0.25

Step-by-step explanation:

First, you distribute the equation.

2(2x+3)-2=5

4x+6-2=5

Then, you combine like terms.

4x+6-2=5

4x+4=5

Next, you subtract 4 from each side.

4x+4=5

4x+4-4=4x

5-4=1

4x=1

Finally, you divide each side by 4.

4x/4

1/4

(4x/4 you'd end up with x)

Answer: x=1/4

Translate the sentence into an equation or formula.

The perimeter P of a triangle is equal to the sum of the lengths of sides a, b, and c.

Answers

Answer:

P = a + b + c

Step-by-step explanation:

Arden has 7/8th yard of ribbon. What is the maximum number of 1/16th yard-long pieces Marilyn can cut from this ribbon?

Answers

Answer:

2/8 is the answer

Step-by-step explanation:

I think the answer

i need help please thanks​

Answers

Answer:

The initial value is 1

Step-by-step explanation:

The initial value is the value when t =0

When t=0 p =1

The answer is 1 hope it helps

PLEASE HELP ME WILL MARK YOU BRAINLIEST

Answers

1.

2(2)^3 - 5(2)^2

2(8) - 5(4)

16 - 20

-4

2.

[ 4(5)^2 + 2 ] / [ 5 + 1 ]

(4(25) + 2) / 6

100 + 2 / 6

102 / 6

17

3.

15 - (-1)^5

15 - - 1

15 + 1

16

Hope this helps!! :)

Find three consecutive integers such that twice the first is equal to 17 more than the largest number

Answers

smallest is X

middle is X+1

largest is X+2

 

2X = x+2 + 17

 

2X = x + 19

 

x = 19

 

19. 20, 21

a die is rolled once . what is the probability that the number on top will be _____​

Answers

Answer:

I think the number on top will be 3

Answer:

50%

Step-by-step explanation:

Since the dice was only rolled twice, that would give youa  50/50 chance of getting any number on the dice, as it was only rolled once obviously.

Marques is a waiter at a restaurant. Each day he works, Marques will make a
guaranteed wage of $25, however the additional amount that Marques earns from
tips depends on the number of tables he waits on that day. From past experience,
Marques noticed that he will get about $14 in tips for each table he waits on. How
much would Marques expect to earn in a day on which he waits on 17 tables? How
much would Marques expect to make in a day when waiting on t tables?

Answers

Answer:

Step-by-step explanation:

25- guaranteed

$14 on each table waited on

He waited on 17.

17x14= $238 tips

238+25= $263

1. Marques expects to earn $263 on 17 tables

2. He expects to make 25+14t per day.

Sam does a weekly exercise program consisting of cardiovascular work and weight training. Each week, he exercises for at least 5 hours. He spends at most 3 hours doing cardiovascular work. He spends at most 11 hours on weight training. Let x denote the time (in hours) that Sam spends doing cardiovascular work. Let y denote the time (in hours) that he spends on weight training. Shade the region corresponding to all values of x and y that satisfy these requirements.

Answers

5 you can get your order and your order for the next order for the order from here

I will Brainlist Who can Answer this 4 Question Math Match the situation with the corresponding linear system. Write the letter of your answer.​

Answers

Step-by-step explanation:

6 = b

7 = d

8 = c

9 = a

hope this answer helps you dear...take care and may u have a great day ahead!

Find the value of X and Y​

Answers

Answer:

x = 20 , y =43

Step-by-step explanation:

1- 7x-3 + 3x-17 = 180

10x = 200, x = 20

Y = 3x-17  x is 20 so Y=60-17=43

GEOMETRY HELP ASAP PLEASE

Answers

Answer:

None

Step-by-step explanation:

It would be easier to ask your teacher instead of getting wrong answers from random people. Ever think of that :0

How do you do this question?

Answers

Answer:

The answer is D) 12

 

There are two trips, but the distances are the same.

Trip #1: uphill, at 9 mph

Trip #2: downhill at 18 mph

Total round trip is 30 minutes.

Since he's going half the speed uphill, Trip #1 takes twice as long as Trip #2.

So if the time for Trip #2 is x, then the time for Trip #1 is 2x.

     x + 2x = 30, so x=10

Trip #2 takes 10 minutes.

Trip #1 takes 20 minutes.

Trip #1: 20 minutes at 9 mph = 3 miles

Trip #2: 10 minutes at 18 mph = 3 miles

This means his school is 3 miles away.

If you want an equation to solve,

Let d = distance to school.  We use d = r·t formula to set up that t = d/r

let t1 = time going to school and t2 = times going home

t1 + t2 = 30 and t1 = d/9 and t2 = d/18.

    d/9 + d/18 = 0.5    (it's 0.5, because we need the time in hours)

      mutiply both sides b 18

    2d + d = 9

     3d = 9

       d = 3

One day, while going to her office, Suchitra has to go to her son's school to attend PTM. Then she worked
in the office and left early as some guests are arriving at her house in the evening. She went to the bank after
the office and then to the shop to purchase some groceries to welcome the guests. The route of Suchitra has
been shown in the Cartesian plane in the figure below. The location of Suchitra's house in Cartesian plane is
10.-4).
of the chane

Answers

10000/3355532 that might be it
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