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expeople1 [14]
3 years ago
8

What is the value of x in the equation x – y = 30, when y = 15?

Mathematics
2 answers:
vovikov84 [41]3 years ago
6 0
X should be 45
45-15=30
fomenos3 years ago
6 0
So you can plug in 15 and now the equation is x - 15 = 30. so then add 15 to 30 and so x is 45. you can plug in the numbers to see if it is correct. 45 - 15 does equal 30 so it is true. x = 45

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Find three consecutive odd integers such that the sum of the smaller two is three times the largest increased by seven
svlad2 [7]
Let the three odd integers be x - 2, x and x + 2
x - 2 + x = 3(x + 2) + 7
2x - 2 = 3x + 6 + 7
2x - 2 = 3x + 13
3x - 2x = -2 - 13
x = -15

The three consecutive odd integers are -17, -15 and -13.
4 0
3 years ago
A student is considering publishing a new magazine aimed directly at owners of Japanese automobiles. He wanted to estimate the f
JulsSmile [24]

Answer:

Check Explanation

Step-by-step explanation:

a) Confidence Interval for the population mean is basically an interval of range of values where the true population mean can be found with a certain level of confidence.

Mathematically,

Confidence Interval = (Sample mean) ± (Margin of error)

With p(japan) representing the true population proportion of US automobile that are made in Japan, the computer output 90% confidence

0.29938661 < p(japan) < 0.46984416

mean that p(japan); the true population proportion of US automobile that are made in Japan lies within the range of proportions (0.29938661, 0.46984416) with an assurance level of 90%.

b) 90% confidence mean that the true proportion may or may not be in the given range, but we are 90% certain that it does.

c) The confidence interval contradicts the politician's claim that "Half of all cars in the United States are made in Japan" because the proportion in the politician's claim, (0.50), does not lie within the range of values that our confidence interval says the true population proportion can take on; (0.29938661, 0.46984416).

0.50 lies outside of the confidence interval obtained for the true population proportion of US automobiles that are made in Japan, hence, the confidence interval contradicts the politician's claim.

Hope this Helps!!!

3 0
3 years ago
Need help with this asap
dem82 [27]

Answer:

I cant lie I don't know this answer

4 0
2 years ago
Read 2 more answers
Find the value of x to the nearest tenth.
Viefleur [7K]
Answer:

x = 7.8

Step-by-step explanation:

a^2 + b^2 = c^2

4^2 + 2^2 = c^2

16 + 4 = c^2

c^2 = 20

c = 4.5

a^2 + b^2 = c^2

a^2 + 4.5^2 = 9^2

a^2 + 20.25 = 81

a^2 = 81 - 20.25

a^2 = 60.75

a = 7.8

7 0
3 years ago
Read 2 more answers
What does -5.4+9.7 equal?
tatiyna
Oh gurly!!!! Just use a calculator but I’ll answer this one for you okay? Now how I’d do it without a calculator is subtract. Subtract if it asks you to add and add if it asks for subtraction.. it may be confusing but I’ll explain. 9.7-5.4=4.3


When you add a negative to a positive it subtracts the positive.
3 0
2 years ago
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