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3 years ago

What is the solution of the system ?Use substitution. Y= -3x X + y = -4

Mathematics

1 answer:

DedPeter [7]3 years ago

4 0

I hope this helps you

x-3x= -4

-2x= -4

x=2

y= -3.2

y= -6

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The measure of angle A is 15°, and the length of side

dangina [55]

Answer:

Part 1) $AB=30.9\ units$

Part 2) $AC=29.9\ units$

Step-by-step explanation:

The picture of the question in the attached figure

Part 1

Find the length side AB

we know that

$sin(A)=\frac{BC}{AB}$ ----> by SOH (opposite side divided by the hypotenuse)

substitute the given values

$sin(15^o)=\frac{8}{AB}$

solve for AB

$AB=\frac{8}{sin(15^o)}=30.9\ units$

Part 2

Find the length side AC

we know that

$tan(A)=\frac{BC}{AC}$ ----> by TOA (opposite side divided by the adjacent side)

substitute the given values

$tan(15^o)=\frac{8}{AC}$

solve for AC

$AC=\frac{8}{tan(15^o)}=29.9\ units$

8 0

3 years ago

Thanks that helped a lot with my math homework!:):):)

frosja888 [35]

:):):):):):):):):):)

8 0

3 years ago

What is the answer for number 6

Ilya [14]

Inches: 2 4 6 8 1 21
centimeters: 8 10 12 14 7

6 0

3 years ago

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Measure Math | Welcome, HAILEE KNOTT

grandymaker [24]

Answer: $15\times\frac{1}{2}$

Explanation:

Multiplying by 1/2 is the same as dividing by 2.

For example, if you have 10 slices of cake and 2 friends, then each friend gets 10/2 = 5 slices. We could also say $10\times \frac{1}{2} = 5$

The fraction 1/2 converts to the decimal form 0.5, which means $10 \times \frac{1}{2} = 10*0.5$

3 0

2 years ago

PLEASE HELP FAST AND PLEASE DON'T POST A LINK

Likurg_2 [28]

Answer:

The difference in amount = $430

Step-by-step explanation:

1- Annual contract:

The annual contract means a contract for 12 months. There is a month penalty for breaking the lease.

This means that, if you left after 8 months, you will have to pay for 10 month.

Total paid = monthly payment * 10

Total paid = 535 * 10 = $5350

2- Month-to-month contract:

You will only paid for the 8 months you stayed,

Total paid = monthly payment * 8

Total paid = 615 * 8 = $4920

3- Getting the difference:

We can note that a month-month contract is a better option if you intend to stay for only 8 months

Difference = 5350 - 4920 = $430

Hope this helps :)

4 0

3 years ago

Read 2 more answers