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3 years ago

NEED HELP ASAP I WILL RATE 5 STARS

Mathematics

1 answer:

masha68 [24]3 years ago

5 0

Answer:

Step-by-step explanation:

If you plug in 5 1/3 to the equation, the result is 6, meaning that the point lies on the line.

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48 divided by 6 - 3 3/4

nordsb [41]

Answer:

4/1/4

Step-by-step explanation:

48÷6

=8-3 3/4

=4/1/4

8 0

3 years ago

Read 2 more answers

Which of the following has a graph that is a straight line? (4 points) Equation 4: y = 3x3 Equation 3: y = 2x2 + 4 Equation 1: y

Ray Of Light [21]

The equation of the line: y = mx + b.

Therefore your answer is Equation 1: y = 2x + 7.

3 0

2 years ago

Read 2 more answers

A. 8/17<br> B. 15/17<br> C. 15/8<br> D. 8/15

Vlada [557]

Answer:

A) 8/17

Step-by-step explanation:

cos = adj/hyp

In this problem the unknown angle has a hypotenuse pf 17, 15 as opposite, and 8 as adjacent

8 0

2 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

2 years ago

Which equation represents a parabola opening to the right with a vertex at the origin and focus at (9,0) A. X = - 1/36y^2 B. X =

Virty [35]

Answer:

Option C: x = (1/36)*y^2

Step-by-step explanation:

A horizontal parabola is written as

x = f(y) = a*y^2 + b*y + c

If a is positive, the parabola opens to the right.

if a is negative, the parabola opens to the left.

And the vertex of the parabola has the y-value:

y = -b/2a

and the x value

x = f(-b/2a)

For our parabola, we know that:

Opens to the right:

Then the only options left are:

C) x = (1/36)*y^2

D) x = (1/6)*y^2

Because in both cases b = 0, both of the equations have the vertex in the point (0, 0).

Now let's see wich one has a focus at (9, 0)

If the vertex of our equation is:

(h, k)

Then the focus will be:

(h + a, k)

Where a is the directrix of the equation.

Here we know that the vertex is (0, 0) and the focus is (9, 0)

Then:

(0 + a, 0) = (9, 0)

The directrix is 9.

And the directrix is such that:

(x - h)^2 = 4*a*(y - k)

Replacing the values of h and k (both are zero) we get:

x^2 = 4*a*y

And we know that: a = 9

x^2 = 4*9*y

x^2 = 36*y

if we isolate y, we get:

(1/36)*x^2 = y

This is option C.

Then the correct option is C.

8 0

2 years ago