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3 years ago

Asking again for your help! I really don't understand!

Mathematics

1 answer:

skelet666 [1.2K]3 years ago

8 0

Answer: y≤4x+3 and y≤-3x-5

Step-by-step explanation:

The slope of the first line is 4. The slope of (-1,-1) and (0,3) is 4. And the line passes through 3, so the y-intercept is 3.

The slope of the second line is 3. The slope of (-3,4) and (-1,-2) is -3. And the line passes through -5, so the y-intercept of the second line is -5

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Change equation to slope intercept form 2x-3y=15

meriva

Tex]y= \frac{2}{3}x-5 [/tex]

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3 years ago

Find tan(β) in the triangle.

BabaBlast [244]

Answer:

tan β = $\frac{8}{15}$

Step-by-step explanation:

tan β = $\frac{opposite}{adjacent}$ = $\frac{AC}{BC }$ = $\frac{8}{15}$

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3 years ago

Identify the solutions to the quadratic equation 6x^2+x-1=0

tigry1 [53]

Answer:

1/3 and -1/2

Step-by-step explanation:

You can use the factoring method to identify the solutions of x

6x^2+x-1

2 numbers have to multiply to 6 and subtract to 1 because x is the same as 1x

So, you get 3x and 2x

since you know that -1x1 is -1 you will get

(3x-1)(2x+1)=0

Now, since (3x-1) and (2x+1) multiply to get 0, if either (3x-1) or (2x+1) is 0 the statement will be valid

3(1/3)-1=0

2(-1/2)+1=0

So, your answers are 1/3 and -1/2

5 0

2 years ago

Jim and Dianna want to save for their child’s college expenses. They find an annuity that pays 6% annual interest, compounded mo

lana66690 [7]

Answer:

future value = $49163.8

so required amount will be $491200 nearest $100

Step-by-step explanation:

given data

annual interest rate = 6 %

annuity = $300 per month

time period = 10 years

to find out

how much money will they have for the college expenses

solution

we know that effective rate will be

effective rate = $\frac{0.06}{12}$

effective rate = 5 × $10^{-3}$

number of payment = 12 × 10 = 120

so future value will be express as

future value = annuity × $\frac{(1+r)^t-1}{r}$ .........1

future value = 300 × $\frac{(1+5*10^{-3})^{120}-1}{5*10^{-3}}$

future value = 300 × 163.8793

future value = $49163.8

so required amount will be $491200 nearest $100

7 0

3 years ago

True or false two lines that lie in a parallel planes are parallel

faltersainse [42]

True ................

4 0

3 years ago