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Lubov Fominskaja [6]
3 years ago
7

PLS ANSWER THE QUESTION QUICK

Mathematics
1 answer:
andrey2020 [161]3 years ago
5 0
3x+5=-2x-10


solution:

x=3
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Sales at a fast-food restaurant average $6,000 per day. The restaurant decided to introduce an advertising campaign to increase
Akimi4 [234]

Answer:

The value of the test statistic is 2.8.

Step-by-step explanation:

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value expected value for the population mean, \sigma is the standard deviation and n is the size of the sample.

Sales at a fast-food restaurant average $6,000 per day

This means that \mu = 6000

Sample of 49

This means that n = 49

The sample showed average daily sales of $6,400.

This means that X = 6400

Population standard deviation is about $1,000.

This means that \sigma = 1000

The value of the test statistic is

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{6400 - 6000}{\frac{1000}{\sqrt{49}}}

z = 2.8

The value of the test statistic is 2.8.

7 0
3 years ago
It is 90 ft between the bases of baseball diamond. A catcher throws a baseball to the shortstop who is half-way between second a
Hunter-Best [27]

Answer:

127.3 ft

Step-by-step explanation:

A baseball diamond is constructed in a square shape.

The sides are 90 ft each

If a catcher throws a baseball to the shortstop who is half-way between second and third bases, the distance between the third base and the short stop = 1/2(90)

= 45 ft

length of the throw is found using Pythagoras theorem.

Hypothenus ^2 = opposite ^2 + adjacent ^2

= 90^2 + 45^2

Hypothenus = √8100 + 2025

=√10125

= 100.62 ft (approximately)

8 0
3 years ago
Math help NEEDED time running out please help!!! will mark brainliest
o-na [289]
1.

Answer C. (8)

2.

 Answer C. [6x^(4/3)]

3.

Answer D. (the one with 36x²)

4.

Answer B. (2a^(2/3)b²)

5.

Answers C. and D.
3 0
4 years ago
If d = 2, e = -3, f = 6, and g = 12, what is the value of (d + g) - (e + f) ?
natali 33 [55]

Answer:

.....................................

8 0
3 years ago
Forgot how to solve, i need help man..
Anna71 [15]

Answer:

3x + x + 100° = 180°

⇔ 4x = 80°

⇔ x = 20°

Step-by-step explanation:

5 0
3 years ago
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