Andre and Elena knew that after 28 days they would have 2²⁸ coins, but they wanted to find out how many coins that actually is. Andre wrote: 2 28 = 56. Elena said, "No, exponents mean repeated multiplication. It should be 28 28, which works out to be 784." Do you agree with either of them? Explain your reasoning.

Answers

Answer 1

Answer:

I agree with none of them

Step-by-step explanation:

Given

[tex]Expression= 2^{28}[/tex]

[tex]Andre: 2 * 28 = 56[/tex]

[tex]Elena: 28 * 28 = 756[/tex]

Required

Who is correct?

[tex]Expression= 2^{28}[/tex]

When we apply law of indices to the above, it gives 2 multiplies by itself in 28 places

i.e.

[tex]Expression= 2^{28}[/tex]

[tex]Expression= 2*2*2*..........*2[/tex] ---- in 28 places

Andre's interpretation of the expression is incorrect as:

[tex]2^{28} \neq 56[/tex]

Also, Elena's expression is incorrect.

This is so, because

[tex]2^28 \neq 28*28[/tex]

Hence, both of them are incorrect and I agree with none of them


Related Questions

I NEED HELP NOW!!! I ONLY HAVE 5 MIN TO TURN THIS IN

Answers

Answer:

a)

28000 + 3000·x = 36000 + 2000·x --> x = 8 years

b)

28000 + 3000·8 = $52000

Answer:

a.  x = 8 yearsb.  52,000

Step-by-step explanation:

company A = 28,000 + 3,000 (x)

company B = 36,000 + 2,000 (x)

where x = no. of years.

company A = company B

28,000 + 3,000 (x) = 36,000 + 2000 (x)

3,000 (x) - 2,000 (x) = 36,000 - 28,000

1,000 (x) = 8,000

x = 8,000

     1,000

x = 8 years

plugin value of x = 8 into company A and B

company A = 28,000 + 3,000 (8)

company A = 52,000

company B = 36,000 + 2,000 (8)

company B = 52,000

-8-3x=-8(1-7x) how many solutions will mark barilest

Answers

Answer:

x=0

Step-by-step explanation:

-8-3x=-8(1-7x)

add 8 to both sides =( -3x=56x)

subtract 56x from both sides (-59x=0)

divide both sides by -59 = (x=0)

MR. WINTER WAS STANDING ON THE MIDDLE RUNG OF HIS LADDER. HE THEN STEPPED UP 4 RUNGS, THEN DOWN 6 RUNGS. LATER HE CLIMBED BACK UP 7 RUNGS. FINALLY, HE CLIMBED UP 5 MORE RUNGS AND REACHED THE TOP OF THE LADDER. HOW MANY RUNGS WERE THERE ON HIS LADDER?

Answers

why all caps ? ;) ....

Abby takes a ride-sharing service to ride from her home to the mall. The ride-sharing service charges $1.75 per mile plus a one-time charge of $5.00. Which equation can be used to find y, the total cost of the ride, given x represents the number of miles of the ride

Answers

Answer:

y=1.75x + 5.00

Step-by-step explanation:

What theorem shows that l // m

Answers

alternate interior, they are inside the lines & on opposite sides !!

Help with question 1 & 2 pls .

Answers

Answer:

1. (c)

2. (c)

Step-by-step explanation:

Your roommate's closet is full of skeletons. There are containers full of skeletons which weigh pounds total. If there are containers, how much does each container weigh? Leave your answer in the form a^b.

Answers

Answer:

Each container weigh 10^3pounds

Step-by-step explanation:

The question lacks the necessary values. Let's restructure the question and include values.

Your roommate's closet is full of skeletons. There are containers full of skeletons which weigh 100,000 pounds total. If there are 100 containers, how much does each container weigh? Leave your answer in the form a^b.

From the question, we are given the following;

Weight of containers full of skeleton = 100000 pounds

Number of containers = 100

Required

Weight of each container

Let's say:

100containers = 100000pounds

1 container = xpound

Cross multiply

100×x = 100,000

Divide both sides by 100

100x/100 = 100,000/100

x = 10,000/100

x = 10^5/10^2

Using the law of indices

x = 10^{5-2}

x = 10^3

Hence the answer in form of a^b is 10^3 pounds.

what number should be added to both sides of the equation to complete the square?

Answers

-4 is what you put on both sides Bc it’s half of b

Help ASAP please!!!!!!!!!​​

Answers

Answer:

Δ JKL is similar to Δ ABC ⇒ D

Step-by-step explanation:

Similar triangles have equal angles in measures

In ΔABC

m∠A = 15°

m∠B = 120

∵ The sum of the measures of the interior angles of a Δ is 180°

∴ m∠A + m∠B + m∠C = 180°

→ Substitute the measures of ∠A and ∠B

∵ 15 + 120 + m∠C = 180

→ Add the like terms in the left side

∴ 135 + m∠C = 180

→ Subtract 135 from both sides

∴ 135 - 135 + m∠C = 180 - 135

m∠C = 45°

The similar Δ to ΔABC must have the same measures of angles

If triangles ABC and JKL are similar, then

m∠A must equal m∠J

m∠B must equal m∠K

m∠C must equal m∠L

∵ m∠J = 15°

m∠A = m∠J

∵ m∠L = 45°

m∠C = m∠L

∵ m∠J + m∠K + m∠L = 180°

→ Substitute the measures of ∠J and ∠L

∵ 15 + m∠K + 45 = 180

→ Add the like terms in the left side

∴ 60 + m∠K = 180

→ Subtract 60 from both sides

∴ 60 - 60 + m∠K = 180 - 60

∴ m∠K = 120°

m∠B = m∠K

Δ JKL is similar to Δ ABC

can somebody please help me on these questions ASAP , I appreciate it so much :)

Answers

I took the time to work it out but i really only got one answer i hope this helps

Order the set of integers from greatest to least.



{8, 32, 55, 32, 19, 3

Answers

Answer:

55,32,32,19,8,3

Step-by-step explanation:

Answer:

55,32,32,19,8,3

Step-by-step explanation:

I need help please ​

Answers

Answer:

false

Step-by-step explanation:

Answer:

False, it has no solution if the lines are parallel.

Solve for g in the proportion
g 15
4 6​

Answers

Answer:

g times 15 if it's a algebraic question

g=6

Refer to the explanation for the process.

Explanation:

Solve:

9 g=15 10

Cross multiply each denominator by the opposite numerator.

9×10=15×g

Simplify.

90=15g

Divide both sides by 15

90 15=g

Simplify.

6=g

Switch sides.

g=6

Hope this helps!

A necklace regularly sells for $25.00. The store advertises a 15% discount. What is the sale price of the necklace in dollars?

Answers

Answer:

$21.25

Step-by-step explanation:

100 - 15 = 85

25 * 0.85 = 21.25

Question 6 (1 point)
Erica is collecting cans for a school fundraiser. She collects 5 the first day, 10 the
second day, and 15 the third day. If the pattern continues, how many cans will she
collect on the tenth day?
50 cans
15 cans
100 cans
065 cans

Answers

59 cans ... she counting up by 5s so multiply 5 x 10

What is the y intercept of 4y+9x=18

Answers

Answer:

y = 9(2 - x)/4

Step-by-step explanation:

1.) Subtract 9x from both sides.

4y = 18 - 9x

2.) Divide both sides by 4.

y = 18 - 9x/4

3.) Factor out the common term 9.

y = 9(2 - x)/4

My words:

Hope this helps you and let me know if you need help again, also have a blessed day or night, also could I have brainliest for this?

The y intercept of the equation of the line  4y+9x=18 is 4.5.

What is defined as the y-intercept of the line?The point at which the graph intersects this same y-axis is known as the y-intercept. Finding the intercepts of any function of the form y = f(x) is critical when graphing. A function can have one of two types of intercepts. They are recognized as the x and y intercepts. An intercept of the a function is the point at which the function's graph intersects the axis.

For the given question,

The equation of the line is given as;

4y+9x=18

Write the equation in slope intercept form.

y = mx + c

Where, m is the slope and c is the y intercept.

4y = -9x + 18

y = -9x/4 + 9/4

y = -9x/4 + 4.5

Comparing with the standard form, y intercept is found as 4.5.

Thus, the y intercept of the equation of the line  4y+9x=18 is 4.5.

To know more about the y-intercept, here

https://brainly.com/question/25722412

#SPJ2

How many total minutes is the Express train stopped from 7:00 am until 8:30 a.m

Answers

8:30-7:00= 1hr 30 minutes

Answer is 1hr 30 minutes

y is directly proportional to x2
If y = 12 when X = 2 find
X when y = 300

Answers

80 I hope this helps

What is the slope of a line perpendicular to the line whose equation is x-3y=-18

Answers

Answer: y = 3x + 2

Step-by-step explanation: Convert the equation to slope intercept form to get y = –1/3x + 2.  The old slope is –1/3 and the new slope is 3.  Perpendicular slopes must be opposite reciprocals of each other:  m1 * m2 = –1

With the new slope, use the slope intercept form and the point to calculate the intercept: y = mx + b or 5 = 3(1) + b, so b = 2

So y = 3x + 2

b. Selena has a coupon for 15% off ice cream. If she pays $2.68 with the coupon, what was the original price of the ice cream?

Answers

$3.15 , if you took off 15% then that would be $0.47

The image of the point (9,0) under a translation is (7,4). Find the coordinates of
the image of the point (0,8) under the same translation.

Answers

Answer:

(-2, 12)

Step-by-step explanation:

The line passing through which two points is parallel to the line x - 2y = 16?

I need help anyone fast please

Answers

The two points are (0,-8)&(16,0) i used Desmos download it its great for problems like these

For the number .843356, round to the nearest 10th

Answers

The answer would be .8

The reason is .8 is in the tenths place and the 4 beside it makes it stay the same

Five or more up the score four or less let it rest

Answer: 0.8

Step-by-step explanation:

Sam paid $131 for 4 Rodeo Concert Tickets. Each ticket cost the same amount. What was the cost of each concert ticket in dollars and cents?

what i it i need help

Answers

Answer:

$32.75 each ticket

Step-by-step explanation:

131 / 4 = $32.75 each ticket

Answer:

each ticket was $32.75

Step-by-step explanation:

You need to divide 131 by 4.

wich linear function has the same slope as tge one thatis reperswnted by the table?​

Answers

Answer:

Answer: B

Step-by-step explanation: y=-1/5x+1/10

0.3x-2.4=1.25x
How to solve

Answers

Answer:

hi

Step-by-step explanation:

0

.

3

2

.

4

=

1

.

2

5

0.3x-2.4=1.25x

0.3x−2.4=1.25x

3

1

0

2

.

4

=

1

.

2

5

Answer:

x = -2.52631578

Step-by-step explanation:

Combine multiplied terms into a single fraction.

0.3x - 2.4 = 12.5x

3x/10 - 2.4= 1.25x

Again, combine multiplied terms into a single fraction.

3x/10 - 2.4= 1.25x

3x/10 - 2.4 = 5x/4

Add 2.4  to both sides of the equation

3x/10 - 2.4 = 5x/4

3x/10 - 2.4 + 2.4 = 5x/4 + 2.4

Simplify (Add the numbers)

3x/10 = 5x/4  + 2.4

Multiply all terms by the same value to eliminate fraction denominators.

3x/10 = 5x/4  + 2.4

2  x 2 x 5 x 3x/10 = 2 x 2 x 5(5x/4 +2.4)

Therefor, x = 2.52631578

Hope this helps, have a great day! :)

Which of these formulas models this arithmetic sequence?

4, 15, 26, 37, 48, . . .

Answer:

Answers

Answer:

A

Step-by-step explanation:

you were correct because you have to distribute 1st

write a equation that passes through the points 5,2 and 2,8

Answers

Answer:

y = -6/3x + 8

Step-by-step explanation:


.Shaun estimated that the attendance at a college
volleyball game was 1,000. The actual attendance was
1,632. What is the percent error of Shaun's estimate?
Round to the nearest whole percent

Answers

Answer:

38.72%

Step-by-step explanation:

Estimated attendance = 1,000

The actual value of attendance = 1,632

We need to find the percent error of Shaun's estimate. Using the formula as follows :

[tex]\%=\dfrac{|\text{actual value-estimated value}|}{\text{actual value}}\times 100[/tex]

Put all the values,

[tex]\%=\dfrac{1632-1000}{1632}\times 100\\\\=38.72\%[/tex]

So, the percent error of Shaun's estimate is 38.72%.

Scarlett and her friends are going into a movie theater. How much would it cost to
buy 5 drinks and 4 candies if each drink costs $4.50 and each candy costs $5.00?
How much would it cost to buy 5 drinks and 4 candies if each drink cost $d and each
candy cost $c?

Answers

Answer:

Step-by-step explanation:42.50

Answer:

5 drinks: $25.00 4 candies: $18.00 Total: $43.00

inn equation form: $5d+$4.5c=?

Step-by-step explanation:

5*5=25

4.5*4=18

25+18=43

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