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3 years ago

Please help me out here! Precalc :))

Mathematics

1 answer:

skelet666 [1.2K]3 years ago

3 0

Domain are the x values where the line starts and stops.

A bracket is used for a solid circle and a parentheses is used for open circles

The answer would be the second choice: (1,2)

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Could someone please explain how to plot the x-intercept of the first equation and what the answer would be?

Elis [28]

Answer:

You would start in the middle of the number line, move right to positive 4x then move up 2 units to land right in line with 2y this is where your plot would be.

Step-by-step explanation:

Hope this helps mark brainliest please!

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3 years ago

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Answer:

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3 years ago

Write an equation for the following situation:

IRISSAK [1]

Y * x = $300 hope it helps

3 0

3 years ago

Read 2 more answers

In Miami, the number of highway accidents increased by 20% over a four year period. How many accidents were there in 2013 if the

Masja [62]

.20 x 5,120 = 1024 1024 + 5120 = 6144

8 0

3 years ago

Alright, second try. 15 Points to whoever can solve with a half-decent explanation.

sesenic [268]

Answer:

29 cans

Step-by-step explanation:

To solve this problem we must use Heron's formula; A = $\sqrt{S(S-a)(S-b)(S-c)}$

S = 1/2 the perimeter of the given triangle

a, b, c = the measurements of the three given sides

The first step to solving this question is first finding the perimeter.

P = 65m + 74m + 67m

P = 206m

Now that we have our perimeter, we must divide P by 2 to get S.

S = 206/2

S = 103

Now we plug our numbers into Heron's formula.

A = $\sqrt{S(S-a)(S-b)(S-c)}$

A = $\sqrt{103(103-65)(103-67)(103-74)}$

A = $\sqrt{103(38)(36)(29)}$

A = $\sqrt{103(39672)}$

A = $\sqrt{4086216}$

Find the square root of this number.

A ≈ 2021.43909134... m²

If a can of paint covers 70 square meters, then you will need to figure out how many cans you need. This can be done by dividing the overall area of the triangle by the area that a single can of paint can cover.

$\frac{2021.43909134...}{70}$ = 28.8777013049...

We know we can't buy 28.87... of a can (people simply do not sell parts of cans or half-full containers... unless its a bag of lays chips and their 80% air nonsense...) so we must round up to the nearest whole number.

28.87... = 29

Thus we finally have our answer: 29 cans of paint!

5 0

3 years ago