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3 years ago

I have been having trouble with this one for a while please help

Mathematics

1 answer:

Gelneren [198K]3 years ago

8 0

The answer is A.

A is correct because...

(7z+23)-(15z+9) There's an invisible positive 1 in front of (7z+23). Distribute.

7z+23-(15z+9) Distribute the negative sign among 15z and 9.

7z+23-15z-9 Now, combine the like terms, 7z, and -15z. 7z - 15z

-8z+23-9 Combine the like terms, 23 and -9. 23 - 9

-8z +14

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What is the probability of selecting a black card or a red card from a standard 52-card deck of cards?

Cloud [144]

Answer:

7/13

Step-by-step explanation:

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3 years ago

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Ugo [173]

Answer:

I think It's option C

Step-by-step explanation:

But I am not sure It's correct or not

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3 years ago

A theorem in geometry states that the measure of an inscribed angle is half the measure of its

RoseWind [281]

Answer:

The first option is the correct option

Step-by-step explanation:

From the question the slope AC is evaluated as

$m_1 = \frac{b-0}{a- (-c)}$

$m_1 = \frac{b}{a+c}$

And the slope of line CB is mathematically evaluated as

$m_2 = \frac{0-b}{c-a}$

$m_2 = \frac{b}{c-a}$

Now for lines that are perpendicular to each other then the product of their slope should be equal to -1

So if $m ZC$ $= 90^o$

Then

$m_ *m_2 = -1$

i,e

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3 years ago

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Neko [114]

Answer:

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Step-by-step explanation:

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3 years ago

What would be the x intercept

Nuetrik [128]

Answer: (1, 0) or 1

Step-by-step explanation:

Since it is parallel to y=2x-7 that means it has the same slope but a different y-intercept. Let's use b for the unknown value

6=2(4)+b

6=8+b

6-8=8+b-8

-2=b

Now we know the equation for the line is y=2x-2

Since we are looking for the x-intercept y will be 0 and we can sub that in to solve

$0=2x-2\\0+2=2x-2+2\\2=2x\\\frac{2}{2} =\frac{2x}{2} \\1=x$

The x-intercept is 1

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3 years ago