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bija089 [108]
3 years ago
13

What value is equivalent to ​

Mathematics
2 answers:
kotykmax [81]3 years ago
6 0

Answer:

D

Step-by-step explanation:

2^3 equals 8, and 3^4 equals 81. 81 times 8 equals 648.

Vesna [10]3 years ago
4 0

Answer:

648

Step-by-step explanation:

3^4 is 81 and 2^3 is 8 and 81x8=648

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Ms. Davenport's class studied the changes in temperature in math class as a part of their study of rational numbers.
Simora [160]

Answer:

D

Step-by-step explanation:

If it was 6 degrees cooler on Monday than it was on Sunday, but also having Tuesday be 4 degrees warmer than Monday, Wednesday would have to be 2 degrees cooler than Tuesday because it is a number that would comply with the limits  

7 0
3 years ago
Read 2 more answers
Darren runs 1/4 a mile in 2.5 mins. how long will it take him to run a full mile?
rusak2 [61]

it is simple, you multiply 2.5 by 4

2.5*4=10


6 0
3 years ago
A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic ca
Ugo [173]

Answer: A. 664

Step-by-step explanation:

Given : A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.

But there is no information regarding the population proportion is mentioned.

Formula to find the samples size , if the prior estimate to the population proportion is unknown :

n=0.25(\dfrac{z*}{E})^2

, where E = Margin of error.

z* = Two -tailed critical z-value

We know that critical value for 99% confidence interval = z*=2.576  [By z-table]

Margin of error = 0.05

Then, the minimum sample size would become :

n=0.25(\dfrac{2.576}{0.05})^2

Simplify,

n=0.25\times2654.3104=663.5776\approx664

Thus, the required sample size= 664

Hence, the correct answer is A. 664.

5 0
3 years ago
Anthony earned $131 in tips last night while working at the restaurant. If his tips consisted of $1 bills and $5 bills only and
Nadya [2.5K]

Answer:

21

Step-by-step explanation:

Let x = $1 bill

Let y = $5bill

<em>Translating the word problem into an algebraic equation;</em>

<em>For the total number of bills;</em>

x + y = 47 .........equation 1

<em>For the total number of tips;</em>

x + 5y = 131 ..........equation 2

<em>*Solving the linear equation by using the substitution method*</em>

<em>Making x the subject in equation 1:</em>

x = 47 - y .......equation 3

<em>Substituting "x" into equation 2;</em>

(47 - y) + 5y = 131

<em>Simplifying the equation, we have;</em>

47 + 4y = 131

4y = 131 - 47

4y = 84

y = \frac {84}{4}

y = 21 (For the $5 bills).

<em>Therefore, Anthony received 21 pieces of the $5 bills.</em>

To find x;

Substituting "y" into equation 3;

x = 47 - 21

x = 26 (For the $1 bill).

6 0
2 years ago
Is the sample mean difference within the confidence interval you computed in part A of this task?
Alenkasestr [34]

Answer:

xit the problem

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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