4 years ago

Which expression is equivalent to -2 1/2 / -2/3? PLEASE HURRY

Mathematics

1 answer:

antoniya [11.8K]4 years ago

3 0

Answer:

-5/2 x - 3/2

Step-by-step explanation: this is the answer don’t ask how

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What is the sum of Negative 8 + 6?

Pavlova-9 [17]

Answer:

-14 or -2

Step-by-step explanation:

-8+-6= -14

-8+6 = -2

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3 years ago

X over 7+4 is greater than or equal to 16

Blizzard [7]

X/11>=16

X>=16x11

X>=176

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3 years ago

9.50 One way to evaluate the effectiveness of a teaching assistant is to examine the scores achieved by his or her students on a

EleoNora [17]

Answer:

Step-by-step explanation:

Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.

$H_0: s^2 = 300\\H_a: s^2 \neq 300$

(Two tailed test for variance )

Sample variance =480

We can use chi square test for testing of hypothesis

Test statistic = $\frac{(n-1)s^2}{\sigma^2} \\=62.4$

p value = 0.0100

Since p <0.05 our significance level, we reject H0.

The sample variance cannot be claimed as equal to 300.

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3 years ago

One's intelligence quotient, or IQ, varies directly as a person's mental age and inversely as that person's chronological age.

Olin [163]

Answer:

The chronological age is 30 years

Step-by-step explanation:

Q= (kM)/C

132= (22k)/ 25

3300= 22k

k= 150

Q= (150M)/C

100= (150 x 20)/C

100= 3000/C

100C= 3000

C= 30

brainliest pls

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3 years ago

Please I need help ASAP

Anni [7]

Answer:

A. 3t = 24

Step-by-step explanation:

$24 is the total amount spent.

$3 is the price per ticket.

so to get the number of tickets, t, you need the equation 3t = 24.

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3 years ago

Read 2 more answers