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IgorLugansk [536]
3 years ago
5

32-7 (6+12) divided by 4 to the power of 2. Brainliest

Mathematics
1 answer:
Leni [432]3 years ago
8 0

Answer:

Step-by-step explanation:

32 - 7(6+12) / 4^2

25 + 18 /4^2

43 / 16

2.6875 when you round it you get 2.7

You might be interested in
A political pollster claims that 55% of voters prefer candidate A. To investigate this claim, a random sample of 75 voters is po
Elanso [62]

The null hypothesis is rejected because the probability is 0.52.

<h3>What are null hypotheses and alternative hypotheses?</h3>

In null hypotheses, there is no relationship between the two phenomena under the assumption that it is not associated with the group. And in alternative hypotheses, there is a relationship between the two chosen unknowns.

A political pollster claims that 55% of voters prefer candidate A.

To investigate this claim, a random sample of 75 voters is polled.

The pollster finds that 39 of those polled prefer candidate A.

He would like to know if the data provide convincing evidence that the true proportion of all voters who prefer candidate A is less than 55%.

This is left tailed test

H₀: p = 0.55

Hₐ: p < 0.55

Then the probability will be

p = 39 / 75

p = 0.52

P-value = 0.3015

Interpretation of P-value:- In a random sample of 75 voters, the chance of getting a sample statistic of 0.52 or below is 0.3015, assuming that the real population proportion of the voter base who chooses candidate A is 0.55.

More about the null hypotheses and alternative hypotheses link is given below.

brainly.com/question/9504281

#SPJ1

4 0
2 years ago
NEED HELP ASAP!
galina1969 [7]

9514 1404 393

Answer:

  • lamp: $80
  • end table: $140

Step-by-step explanation:

If we let x and y represent the costs of a lamp and end table, respectively, the two purchases can be written as ...

  3x +2y = 520

  2x -y = 20

__

These equations can be solved many ways. If we use "elimination", we can add twice the second equation to the first to eliminate y:

  (3x +2y) +2(2x -y) = (520) +2(20)

  7x = 560 . . . . simplify

  x = 80 . . . . . . divide by 7

  y = 2x -20 = 2(80) -20 = 140

The cost of a lamp is $80; the cost of an end table is $140.

6 0
3 years ago
Please answer correctly !!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!
Liula [17]

Answer:

  8 5 5

Step-by-step explanation:

Line 3 sets t = 5

Line 5 sets n = t = 5

Line 6 sets c = n+3 = 8

The displayed values for c, n, are

  8 5 5

6 0
3 years ago
Plz help due tomorrow plz hurry
muminat

Answer:

(4,-3)

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
HELPPPP!!!!<br> ASAP!!!!! NEED BEFORE TOMORROW!!!! I'll give 20 points!!!
olya-2409 [2.1K]
#1:(A)

#2:(E)

#3:(C)

Hope it helps!
3 0
3 years ago
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