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3 years ago

Which linear equation has a slope of 3 and a y-intercept of -2?

Mathematics

2 answers:

Ipatiy [6.2K]3 years ago

8 0

Answer:

y=3x-2

Step-by-step explanation:

3 is the coefficient of x (slope)

-2 comes after (y-int)

never [62]3 years ago

8 0

Answer:

y = 3x – 2

Step-by-step explanation:

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A group of chemists are conducting an experiment to produce a new liquid material. One chemical contains 15% sodium (Na) and the

lesantik [10]

Answer:

A= 320 and B = 280

Step-by-step explanation:

Amount of sodium from first material = 0.15*A
Amount of sodium from second material = 0.3*B

Now, if we combine the two chemicals to get a new chemical, which is 22% sodium, then the total amount of combined sodium is amount of sodium from both sources

<=> 0.15A + 0.3B = 0.22*(A+B)

<=> 0.07A - 0.08B = 0 (1)

- But we have a second equation, because we know that A + B = 600 (2)

Solve the system of two equations, (1) and (2), we have:

A= 320 and B = 280

4 0

3 years ago

Find m< x (Type the number answer)

pogonyaev

Answer:

Step-by-step explanation:

<u>Law of cosines</u>

In a general triangle, the law of cosines relates the lengths of the sides of the triangle to the cosine of one of its angles.

The law of cosine is expressed as:

$\displaystyle c^{2}=a^{2}+b^{2}-2ab\cos x$

Where a and b are the lengths of two sides of the triangle, x is the angle contained between them, and c is the other side length.

If all side lengths are known, we can solve the above equation for the angle x:

$\displaystyle x =\arccos \left({\frac {a^{2}+b^{2}-c^{2}}{2ab}}\right)$

From the image, we must select a and b as the sides adjacent to angle x in any order. Thus a=17, b=22, c=24. Substituting:

$\displaystyle x=\arccos \left({\frac {17^{2}+22^{2}-24^{2}}{2(17)(22)}}\right)$

Operating:

$\displaystyle x=\arccos \left({\frac {289+484-576}{748}}\right)$

$\displaystyle x=\arccos \left({\frac {197}{748}}\right)$

Using a scientific calculator:

x=74.73°

4 0

3 years ago

Beth works at a car lot. This week she sells $23,200 in cars. She earns 4% commission for all the

Vanyuwa [196]

Answer:

$928

Step-by-step explanation:

23200/100 = 232

232 * 4 = 928

5 0

3 years ago

How do I write 55555 in expanded form

marta [7]

Answer:

FIFTY - FIVE THOUSAND FIVE HUNDRED AND FIFTY-FIVE

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

I'm really confused with this how do you answer this y=4 on a graph

Vilka [71]

Y = 4
y intercept is 4
The line would be horizontal and it would intersect the y axis at the point (0,4)

4 0

3 years ago