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liq [111]
3 years ago
15

Esther wants to solve the problem using an equation. Help her write an equation to determine how many text messages Lexie could

send in any number of minutes.
Find the missing value in Kenny’s table.

Solve Esther’s equation. Will she get the same answer as Kenny?

What is Lexie’s unit rate? That is, how many text messages can she send in
minute
Mathematics
1 answer:
Marat540 [252]3 years ago
7 0

Answer2/0

Step-by-step explanation:

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HELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKK
Lilit [14]

Answer:A

Step-by-step explanation: The first few square numbers are:

1

,

4

,

9

,

16

,

25

,

36

,

49

,

√

1

=

1

√

4

=

2

√

9

=

3

√

16

=

4

√

25

=

5

√

36

=

6

w

w

w

w

w

w

←

√

40

lies here

√

49

=

7

Therefore

√

40

is between

6

and

7

8 0
2 years ago
Read 2 more answers
More math help pls. :)
Step2247 [10]

By using trigonometric relations, we will see that x = 9.97°.

<h3>How to find the missing angle?</h3>

First, we need to find the bottom cathetus of the smaller triangle, we will use the relation:

Tan(θ) = (opposite cathetus)/(adjacent cathetus).

Where:

  • θ = 26°
  • Adjacent cathetus = k
  • Opposite cathetus  = 55ft.

Replacing that we get:

Tan(26°) = 50ft/k

Solving this for k, we get:

k = 55ft/tan(26°) = 112.8 ft

Now, we can see that the longer triangle adds 200ft to this cathetus, so now we will have:

  • angle = x
  • opposite cathetus = 55ft
  • adjacent cathetus = 112.8ft + 200ft = 312.8ft.

Then we have:

Tan(x) = (55ft/312.8ft)

Using the inverse tangent function in both sides, we get:

x = Atan(55ft/312.8ft) = 9.97°

If you want to learn more about right triangles, you can read:

brainly.com/question/2217700

6 0
2 years ago
If an electrician charges $60 an hour and a base fee Of 150 for every house call. Write an equation foR C, in terms of t, res pr
azamat

Answer

Basically you need to know how many hours to work then I think it would help your problem.

Step-by-step explanation:

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
Factor out 3^2 ^3−18^2 ^4
34kurt
The factor of three is six factor of two is to 3 is three factor of two is 22 is four and poster of four is 22 Answer
3 0
3 years ago
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