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3 years ago

Find the product -1(-15) . Oh and also -1(-24) pls help

Mathematics

2 answers:

allochka39001 [22]3 years ago

7 0

Answer:

15 and 24

Step-by-step explanation:

distribute the -1 to the -15 amd it will cancel out same for the other

Romashka-Z-Leto [24]3 years ago

3 0

Answer:

15 and 24

Step-by-step explanation:

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The measure of the angle with "?" is what?

Sergeeva-Olga [200]

Answer:

? = 116°

Step-by-step explanation:

when a line passes through 2 parallel lines,

the angles ?° + 64° are complementary or add up to 180°

? + 64° = 180°

? = 180° - 64° = 116°

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3 years ago

What are the answers to the ones that are circled

givi [52]

It is 395.3 use calculators or do the division out of paper

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3 years ago

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A photo frame in the shape of a quadrilateral has one diagonal longer than the other. Is it a Rectangle? Why

julsineya [31]

Answer:

80°

Step-by-step explanation:

A rectangle has same opposite sides and 4 right angles as property of a rectangle.

The photo frame has different diagonal lengths

It makes opposite sides different, therefore it is not a rectangle

<u>Given angles (x - 20) and (x + 40) are consecutive interior angles which add up to 180°</u>

x - 20° + x + 40° = 180°
2x + 20° = 180°
2x = 160°
x = 80°

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3 years ago

The number of rookie cards in a variety pack of baseball cards is normally distributed with a mean of 3 cards and the standard d

Sergio039 [100]

Answer:

$z = \frac{2-3}{\frac{1}{\sqrt{10}}}=-3.163$

$z = \frac{4-3}{\frac{1}{\sqrt{10}}}=3.163$

$P(-3.163$

So then we will expect 9.98 packages between 2-4 rookie cards in the sample of 10

Step-by-step explanation:

Let X the random variable that represent the number of rookie cards of a population, and for this case we know the distribution for X is given by:

$X \sim N(3,1)$

Where $\mu=3$ and $\sigma=1$

We select a sample size of n = 10 variety packs and we want to find this probability:

$P(2$

We can use the z score formula given by:

$z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

If we apply this formula to our probability we got this:

We can find the z score for 2 and 4 and we got:

$z = \frac{2-3}{\frac{1}{\sqrt{10}}}=-3.163$

$z = \frac{4-3}{\frac{1}{\sqrt{10}}}=3.163$

So we can find the probability with this difference

$P(-3.163$

And using the normal standard distirbution or excel we got:

$P(-3.163$

So then we will expect 9.98 packages between 2-4 rookie cards in the sample of 10

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3 years ago

Solve for x in the diagram below.

larisa [96]

Answer:

x = 20

Step-by-step explanation:

The three angles form a straight line so they add to 180 degrees

x+ 100 +3x = 180

Combine like terms

100+4x= 180

Subtract 100 from each side

100+4x-100= 180-100

4x= 80

Divide each side by 4

4x/4 = 80/4

x = 20

8 0

3 years ago

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