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Mashcka [7]
4 years ago
13

What is the value of x in the solution to this system of equations

Mathematics
1 answer:
Nata [24]4 years ago
7 0
B is the correct answer because of the system


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35 POINTS
miv72 [106K]

Answer:

65

Step-by-step explanation:

520/8=65 so approximately 65 kids play soccer

4 0
3 years ago
The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population standard deviati
garik1379 [7]

Answer:

Their welders earn $50,000 annually.

Step-by-step explanation:

Given : \mu = 50,000

           \sigma = 2000

           n = 100

          \bar{x}=50350

To Find : The ship building association wishes to find out whether their welders earn more or less than $50,000 annually.

Solution :

H_0:\mu = 50000\\H_a: \mu \neq 50000

n = 100

Since n > 30

So we will use z test

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

Substitute the values

z= \frac{50350-50000}{\frac{2000}{\sqrt{100}}}

z=1.75

Refer the z table for p value

p value = 0.9599

α= 0.05

Since p value > α

So we accept the null hypothesis .

Hence  their welders earn $50,000 annually.

4 0
3 years ago
Astrid is in charge of building a new fleet of ships. Each ship requires 40 tons of wood, and accommodates
zalisa [80]

Answer:

it requires 280 ton of wood

Step-by-step explanation:

one ship can accommodate 300 sailors so for 2100 sailors you need

2100/300

7 ships

and as I ship require 40 tons of wood then 7*40

280 tons

then

he can get 4 ton of wood per day

then

280/4

70 days

therefore he needs wood for 70 days to accommodate 2100 sailors

6 0
3 years ago
What’s the answer to this
pantera1 [17]

Answer:

A

Step-by-step explanation:

Given f(x) the f(x) + c represents a vertical translation of f(x)

• If c > 0 then a shift up of c units

• If c < 0 then a shift down of c units

Here c = - 6, thus a shift down, thus

g(x) = x² - 6  → A

4 0
3 years ago
What are some good tips too carry with me for my junior year in highschool, I need a lot of tips of how too stay organized, how
irga5000 [103]

Answer:

tbh stay away from the drama because that just gets u in everything and u dont  want that and just focus on yourself to stay on task worry about everyone else and i need help on staying organized too

Step-by-step explanation:

7 0
3 years ago
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