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3 years ago

Please help me with this question!!

Mathematics

1 answer:

Pachacha [2.7K]3 years ago

6 0

Answer:

B. Negative

Step-by-step explanation:

We are given that x equals negative and y equals positive.

That means the fraction is negative multiplied by the 7y³ term, which is positive.

Negative times positive is negative, so B is our answer.

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Please help . I’ll mark you as brainliest if correct

il63 [147K]

Answer:

30 m

Step-by-step explanation:

51-21=30

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3 years ago

If testing the claim that sigma subscript 1 superscript 2 baseline not equals sigma subscript 2 superscript 2σ21≠σ22, what do w

12345 [234]

Answer:

The statistic for this system of hypothesis is given by:

$F=\frac{s^2_1}{s^2_2}$

If the statistic is equal to 1 then that means $s^2_1 = s^2_2$ and we don't have enough evidence to conclude that the two population variances and deviations are different.

Step-by-step explanation:

System of hypothesis

We want to test if the variation for a group1 is equal to another one 2, so the system of hypothesis are:

H0: $\sigma^2_1 = \sigma^2_2$

H1: $\sigma^2_1 \neq \sigma^2_2$

Calculate the statistic

The statistic for this system of hypothesis is given by:

$F=\frac{s^2_1}{s^2_2}$

If the statistic is equal to 1 then that means $s^2_1 = s^2_2$ and we don't have enough evidence to conclude that the two population variances and deviations are different.

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3 years ago

Ali bought 2 litre milk. he drank ⅖ litre of it. how much milk did ali has left?

oksian1 [2.3K]

Answer:

1.6 litre of milk is left

8 0

2 years ago

Given the functions f(x) = – 3x – 5 and g(x) = x^2 – 4, find g(f(x)).

IceJOKER [234]

Answer is b . G)f(x))=9x^3+30x

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3 years ago

At dinner, the meal cost $22 and a $1.87 sales tax was added to the bill. What would be the total amount if the meal cost $80.

Helen [10]

1.87 is 8.5% of 22 so 8.5% of 80 is 0.085 x 80 so $6.80

3 0

2 years ago