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3 years ago

13

When 4x2 + 7x - 5 is subtracted from 9x2 - 2x + 3, the result is

1 answer:

skelet666 [1.2K]3 years ago

3 0

The Awnser for the exact value is 7x + 3

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I need help with this:

Brut [27]

By the commutative property of addition, the answer you got
c = -b+5a
is identical to selection ...
D. c=5a-b

The commutative property tells you the order of addition doesn't matter, so
(-b)+(5a) = (5a)+(-b) = 5a-b
(This is one of the reasons we study these properties.)

3 0

4 years ago

A sample of 200 college freshmen was asked how many hours per week they spent playing video games. The following frequency distr

JulsSmile [24]

Answer:

$\% Below\ 50 = 88 \%$

$\% 43\ or\ more = 17 \%$

Step-by-step explanation:

Given

$Total = 200$

<em>The attachment presents the table properly</em>

Solving (a): Percentage of those who play for less than 50 hours weekly

To do this, we simply consider the frequency of students that fall within:

1.0 - 7.9, 8.0 - 14.9,......,43.0 - 49.9

Their frequency is:

$Frequency = 21 + 37 + 40 + 27 + 23 + 18 + 10$

$Frequency = 176$

The percentage is then calculated as:

$\% Below\ 50 = \frac{Frequency}{Total} * 100\%$

$\% Below\ 50 = \frac{176}{200} * 100\%$

$\% Below\ 50 = \frac{176* 100}{200} \%$

$\% Below\ 50 = \frac{176* 1}{2} \%$

$\% Below\ 50 = \frac{176}{2} \%$

$\% Below\ 50 = 88 \%$

Solving (b): Percentage of those who play for 43 or more hours weekly

To do this, we simply consider the frequency of students that fall within:

43.0 - 49.9,......,64.0 - 70.9

Their frequency is:

$Frequency = 10 + 7 + 5+12$

$Frequency = 34$

The percentage is then calculated as:

$\% 43\ or\ more = \frac{Frequency}{Total} * 100\%$

$\% 43\ or\ more = \frac{34}{200} * 100\%$

$\% 43\ or\ more = \frac{34* 100}{200} \%$

$\% 43\ or\ more = \frac{34* 1}{2} \%$

$\% 43\ or\ more = \frac{34}{2} \%$

$\% 43\ or\ more = 17 \%$

7 0

3 years ago

Which expressions are equivalent to the given expression.<br> y^-8y^3x^0x^-2

vesna_86 [32]

$y^{-8} y^3 x^0 x^{-2}$ is equivalent to $y ^{-5} x ^{-2}\\$ .

<h3>What is a simplification of an expression?</h3>

Usually, simplification involves proceeding with the pending operations in the expression.

Simplification usually involves making the expression simple and easy to use later.

Given;

$y^{-8} y^3 x^0 x^{-2}$

Simplify

$y^{-8} y^3 x^0 x^{-2}\\\\y ^{-8+3} x ^{0-2}\\ \\y ^{-5} x ^{-2}\\$

Hence, $y^{-8} y^3 x^0 x^{-2}$ is equivalent to $y ^{-5} x ^{-2}\\$ .

Learn more about an expression here:

brainly.com/question/1249625

#SPJ1

8 0

2 years ago

2(d − 6) − 3 = 1 solve for d

andrey2020 [161]

Answer:

<em><u>d = 8</u></em>

Step-by-step explanation:

2(d -6) - 3 = 1

+3 +3

2(d-6) = 4

/2 /2

(d-6) = 2

+6 +6

(d) = 8

<u><em>d = 8</em></u>

5 0

3 years ago

Read 2 more answers

Write the following as an inequality.

shepuryov [24]

The Answer is
-7 < W ≤ -3

8 0

3 years ago