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Anuta_ua [19.1K]
3 years ago
14

Please help on all three of these

Mathematics
1 answer:
Maslowich3 years ago
3 0

Answer:

2) \: y =  - 3x + 5 \\ 3) \: y =  \frac{1}{4}x - 2

Step-by-step explanation:

Remmeber:

slope =  \frac{rise}{run}

I am unsure how to do number 4.

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3. Write out the prime factor of the following numbers.<br> a. 15<br> b. 21<br> C. 38<br> d. 42
Minchanka [31]

Answer:

The prime factors of 15 are: 1,3,5,15

The prime factors of 21 are: 1,3,7,21

The prime factors of 38 are: 1,3,13,39

The prime factor of 42 is : 1,2,3,6,7,14,21,42

6 0
2 years ago
Which two values of x satisfy the equation square root 3-2cos x = 2?
Andrei [34K]

Answer: x=2π/3 and x=4π/3

Step-by-step explanation:

The equation we have is \sqrt{3-2cosx} =2. All we have to do is get cosine alone to find the 2 values of x.

3-2cosx=4\\-2cosx=1\\cosx=-\frac{1}{2}

Now that we have our cosine left, we can use our unit circle to figure out when does cosx=-1/2. Cosine is the x value of the coordinate.

x=2π/3

x=4π/3

8 0
2 years ago
Window cleaner costs 4.00$ plus a 6% sales tax. How much will the item cost after tax?
s2008m [1.1K]
$4.24 should be the price after sales tax.


Hope this helped! (:
7 0
3 years ago
(6 + 3) = (4-5) = 18<br> Evaluate the following numerical expressions
Leya [2.2K]

Answer:

the answer to this question is 18....to complete this you have to multiple first then add

(Sorry.. im kind of confused by this question...

5 0
3 years ago
Triangle J is shown below. James drew a scaled version of Triangle J using a scale factor of 4 and labeled it
Novay_Z [31]

Answer:

The area of triangle K is 16 times greater than the area of triangle J

Step-by-step explanation:

we know that

If Triangle K is a scaled version of Triangle J

then

Triangle K and Triangle J are similar

If two triangles are similar, then the ratio of its areas is equal to the scale factor squared

Let

z -----> the scale factor

Ak ------> the area of triangle K

Aj -----> the area of triangle J

so

z^{2}=\frac{Ak}{Aj}

we have

z=4

substitute

4^{2}=\frac{Ak}{Aj}

16=\frac{Ak}{Aj}

Ak=16Aj

therefore

The area of triangle K is 16 times greater than the area of triangle J

4 0
2 years ago
Read 2 more answers
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