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3 years ago

What word goes in the blanks? 55 points!

Mathematics

2 answers:

mel-nik [20]3 years ago

8 0

Answer:

16 square inches

16 inches

Step-by-step explanation:

We know the area formula is A = s² and the perimeter formula is P = 4s, where s is the side length.

Here, s = 4, so plug this value into both equations:

A = s²

A = 4² = 16 square inches

P = 4s

P = 4 * 4 = 16 inches

Both blanks are 16.

Natalija [7]3 years ago

8 0

Answer:

A: 16 sq in. / P: 16 in.

Step-by-step explanation:

As you already know, the area of a square is found by squaring the length of one side. Here, the length of one side is 4, and 4^2 is 16. The perimeter of a square is found by multiplying 4 to the length of a side. 4*4 = 16.

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Identify the phase shift of each function. Describe each phase shift ( use a phrase like 3 units to the left):

Temka [501]

ANSWER

Phase shift: 2 units right.

EXPLANATION

The given sine function is

$y = - \sin(x - 2)$

In mathematics, a horizontal shift may also be referred to as the phase shift.

This function is shifted to the right 2 units.

8 0

3 years ago

Factor the GCF: 12a3b + 8a2b2 − 20ab3

Harrizon [31]

12a^3b + 8a^2b^2 − 20ab^3

12a^3b = 4ab(3a^2)
8a^2b^2 = 4ab(2ab)
20ab^3 = 4ab(5b^2)

GCF = 4ab

12a3b + 8a2b2 − 20ab3 = 4ab(3a^2 + 2ab - 5b^2)

6 0

3 years ago

Read 2 more answers

Darlene was asked to identify which of the following numbers is prime. Witch number should she choose

nordsb [41]

3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191 those are some prime numbers :)

5 0

3 years ago

Find the area of a triangle with sides of length 6 and 7 and included angle 74°. (round your answer to one decimal place.)

Yanka [14]

We use this formula:
Area = ½ • side 1 • sine (A) • side 2
Area = ½ • 6 • sine (74) • 7
Area = 21 • sine (74)
Area = 21*0.96126
Area = 20.18646 
Area = 20.2 (rounded)
Source:
http://www.1728.org/triang.htm

5 0

3 years ago

26. Students who take a statistics course are given a pre-test on the concepts and skills for the first chapter of a statistics

hjlf

The test statistic value lies to the right of the critical value. So we have sufficient evidence to reject the null hypothesis.

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

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

Students who take a statistics course are given a pre-test on the concepts and skills for the first chapter of a statistics course.

Then they are given a post-test once the professor has concluded lecturing on the material.

Pre-test and post-test scores for 4 students in an elementary statistics class are given below.

Then we have

$\mu _d = \mu _{post} - \mu _{pre}$

Then the null hypotheses and alternative hypotheses will be

H₀: $\mu _d = 0$

Hₐ: $\mu _d > 0$

Then the test statistic will be

$\rm \overline{x} _d = \dfrac{\Sigma x_d}{n} = \dfrac{15+12+10+1}{4}\\\\\overline{x} _d = 9.5$

Then

$\rm S_d = 6.02$

The test statistic value is given by

$\rm t = \dfrac{\overline{x} _d }{\dfrac{S_d}{\sqrtn}} \\\\t = \dfrac{9.5}{\dfrac{6.02}{\sqrt4}}\\\\t = 3.16$

Since this is a right-tailed test, so the critical value is given by

$\rm t_{n-1}(\alpha ) = t_3 (0.05) = 2.353$

Since the test statistic value lies to the right of the critical value. So we have sufficient evidence to reject the null hypothesis.

Hence, we can conclude that $\mu _d > 0$ that is test scores have improved.

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

brainly.com/question/9504281

#SPJ1

7 0

2 years ago