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3 years ago

Please help me with these two problems, and I would also like a clear explanation. Thank you!

Mathematics

1 answer:

LiRa [457]3 years ago

3 0

Step-by-step explanation:

add all those parthesis before the 3 dots then all those after the3 dots then add the answers I think pretty sure haven't done it in awhile

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Expand & simplify 4 ( g + 4 ) − 6 ( g + 2 )

sertanlavr [38]

Answer:

i dont know I have the same questions aswell

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2 years ago

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Write the equation for the line in slope-intercept form.

Elan Coil [88]

Answer:

y = 4x + 3

Step-by-step explanation:

We are given the line shown in your question.

We want to write the equation of this line in slope-intercept form

Slope-intercept form is given as y=mx+b, where m is the slope and b is the value of y at the y intercept

As we are given the graph of the line, we can pick any 2 points to help us find the equation; in this case, let's take (0,3) and (-1, -1).

First, we need to find the slope of the line

The slope (m) can be found using the equation $\frac{y_2-y_1}{x_2-x_1}$ , where $(x_1, y_1)$ and $(x_2, y_2)$ are points

Let's label the values of the points to avoid confusion and mistakes before calculating.

$x_1= 0\\y_1=3\\x_2=-1\\y_2=-1$

Now substitute these values into the equation for the slope

m= $\frac{y_2-y_1}{x_2-x_1}$

m= $\frac{-1-3}{-1-0}$

Subtract

m= $\frac{-4}{-1}$

Divide

m = 4

The slope of the line is 4

Here is the equation of the line so far:

y = 4x + b

Now we need to find b

As stated above, b is the value of y at the y intercept; the y intercept is the point where the line intersects with the y axis. The value of x at this point is 0

One of the points we used to calculate the slope was actually the y intercept point; this point is (0, 3). The value of y at this point is 3, so the value of b is 3

Substitute 3 as b in our equation

y = 4x + 3

Topic: finding the equation of the line

6 0

3 years ago

The state of Georgia has roughly 10⁷ human residents. Each human has roughly 10¹³ bacteria cells in his or her digestive tract.

crimeas [40]

Answer:

10^20

Step-by-step explanation:

So in this word problem, we have to multiply 10^13 bacteria cells on a single person by the 10^7 of people.

Always remember this, when you have exponenets with the same bases, and the question asks for multiplying and dividing exponents, you just need to add and subtract the exponent.

So in this case, we will just add since it calls for multipactation.

So we need to solve:

10^13+7

This will just equal:

10^20 power

Hope this helps ;)

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3 years ago

65% of 150 estimate percent

Ksju [112]

Answer:

97.5

Brainliest answer pls

Step-by-step explanation:

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3 years ago

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The hypotenuse of a right triangle has length 50 cm. One leg has length 20 cm. The nearest tenth, what is the length of the othe

Fantom [35]

Answer:

45.8 cm

Step-by-step explanation:

Let the length of other leg be l

By pythagoras theorem,

$l \: = \sqrt{ {50}^{2} - {20}^{2} } \\ l \: = 45.8cm$

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3 years ago