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3 years ago

Equivalent expressions for (m -3 +4n) x (-8)

Mathematics

1 answer:

frutty [35]3 years ago

4 0

DORA DEH EXPLOR'A INVASION, COPY AND PAST THIS EVERYONE

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I really need help on this problem can i get help on how to solve the problem please

Jobisdone [24]

You cannot assume that the angles are equal. there is no angle measure and nothing to say the lines are parellel.

7 0

3 years ago

Find the error (-8x^2y^2)^2= -64x^4y^4

ExtremeBDS [4]

Answer:

$(-8)^2\neq-64$

Step-by-step explanation:

Using the distributive property to expand, we have

$(-8x^2y^2)^2=(-8)^2(x^2)^2(y^2)^2.$

Squaring each term, we have

$(-8x^2y^2)^2=64x^4y^4.$

The mistake was that $8^2=64,$ not $-64.$ Using the fact that $8^2=64,$ the right answer would be

$\boxed{64x^4y^4}$ .

3 0

2 years ago

Read 2 more answers

Thanks guys for all the help :)

ale4655 [162]

Answer:

(2, 6) .

Step-by-step explanation:

The point A has coordinates (5, 9) and B has coordinates (-1, 3).

The midpoint is (5 + -1)/2 , (9 + 3)/2.

= (2, 6) Answer.

5 0

3 years ago

Which is bigger 200 mm or 1m

UNO [17]

! meter is greater than 200 milimeters

4 0

4 years ago

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Researchers are interested in determining whether more men than women prefer Coca Cola to Pepsi. In a random sample of 300 men,

kobusy [5.1K]

Answer: 0.17 ± 0.096

Step-by-step explanation:

Confidence interval for difference between the population proportion :

$p_1-p_2\pm z^*\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}$

, where $p_1$ = sample proportion for population 1.

$p_2$ = sample proportion for population 2.

$n_1$ = Sample size from population 1.

$n_2$ = Sample size from population 1.

As per given , we have

Population

$p_1=0.65\ \ \& \ \ p_2=0.48$

$n_1=300\ \ \ \&\ \ n_2=400$

Critical z-value for 99% confidence level is z*=2.576 [By z-table]

Now , the 99% confidence interval estimate for the difference between the percentages of men and women who prefer Coca Cola over Pepsi :

$(0.65-0.48)\pm (2.576)\sqrt{\dfrac{(0.65)(1-0.65)}{300}+\dfrac{(0.48)(1-0.48)}{400}}\\\\= 0.17\pm(2.576)\sqrt{0.0007583+0.000624}\\\\=0.17\pm(2.576)\sqrt{0.0013823}\\\\=0.17\pm(2.576)(0.03718)\\\\=0.17\pm0.09577568\\\\\approx0.17\pm0.096$ \

Hence, the correct answer is 0.17 ± 0.096.

6 0

3 years ago

Read 2 more answers