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s344n2d4d5 [400]
4 years ago
10

Subtract -3x-4 from 7x^2-7x​

Mathematics
1 answer:
professor190 [17]4 years ago
4 0

Answer:

−49x8−3x−4

Step-by-step explanation:

−3x−4−49x7x

=−3x+−4+−49x8

hope this helps

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The reported unemployment is 5.5% of the population. What measurement scale is used to measure unemployment? Select one: a. Nomi
kiruha [24]

Answer:

c. Interval or ratio

Step-by-step explanation:

There exists the following measurement scales:

Nominal: A variable is linked to a number. For example, Buffalo Bills players, 27 is Tre'Davious White, 49 Tremanine Edmunds, and then on...

Ordinal: Ranks the intensity of something. For example, grading some pain on a 1 to 10 scale.

Interval or ratio: Represents quantity and has an equality of units. One example is the rates of unemployment.

Descriptive: Tries to attribute qualities to quantitative data. For example, rates of unemployment being classified as very low, low, medium, and then on...

So the correct answer is:

c. Interval or ratio

4 0
3 years ago
A out of 10 trials, a receiver got four cards correct. what is her success rate? what is her expected rate of success, assuming
abruzzese [7]
Complete question:

One classical experiment on ESP (extrasensory perception) tests for telepathy between two participants by using five cards with different designs, all known to both participants.For each trial, the “sender” participant sees a randomly chosen card and concentrates on its design. The “receiver” attempts to guess the identity of the card.<span>Assume that each of the five cards is equally likely to be chosen.

</span>Out of 10 trials, a receiver got four cards correct. What is her success rate?<span>What is her expected rate of success, assuming she is only guessing?

answer:

</span>Success rate = 4/10 = 40%
<span>Expected success rate = 1 out of 5 correct = 20%</span>
5 0
3 years ago
5 feet long divide by 6 feet long
katovenus [111]

Answer:

5 feet / 6 feet = 0.8333

Step-by-step explanation:

4 0
3 years ago
An education budget went from $800,000 to $1,120,000. What is the approximate percent increase?
alina1380 [7]

Answer:

The percentage increase is 40%

Step-by-step explanation:

Percentage Increase =

<u>Final Value - Starting Value</u>

      Starting Value                    x 100 (the whole fraction, not just the bottom)

Hope this helps!!!! :)

8 0
3 years ago
(x-9)(x+9) find the product
klio [65]

Method 1.

Use (a-b)(a+b)=a^2-b^2

(x-9)(x+9)=x^2-9^2=x^2-81

Method 2.

Use distributive property: (a + b)(c + d) = ac + ad + bc + bd

(x-9)(x+9)=(x)(x)+(x)(9)+(-9)(x)+(-9)(9)=x^2+9x-9x-81=x^2-81

7 0
3 years ago
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