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3 years ago

Y = –x – 4 y = x solve algebraically

1 answer:

5 0

You substitute x in for y and would get x=-x-4 then you add x to both sides to cancel X out and leave -4 alone on one side. So you would have 2x=-4 so divide by two on each side and you get x=-2

So the answer would be x=-2

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What is the perimeter of an equilateral triangle that has a height of 24m?

meriva

Answer:

The perimeter of an equilateral triangle that has a height of 24m is

Option C : 48 square root 3

Step-by-step explanation:

Given:

Height of the triangle =24 m

To Find:

The perimeter of an equilateral triangle = ?

Solution:

Perimeter of the equilateral triangle = 3a

where a is the side of the triangle

Here the height is given as 24 m

Then from the figure

$Sin(60^{\circ}) = \frac{opposite}{hypotenuse}$

$Sin(60^{\circ}) = \frac{24}{x}$

$x = \frac{24}{Sin(30^{\circ})}$

$x= \frac{24}{\frac{\sqrt{3}}{2}}$

$x = \frac{24 \times2}{\sqrt{3}}$

$x = \frac{48}{\sqrt{3}}$

Now

The perimeter is

=> 3x

=> $3 \times \frac{48}{\sqrt{3}}$ -------------------------(1)

Now we know that 3 = $\sqrt{3} \times \sqrt{3}$ --------------------(2)

Substituting (2) in (1)

=> $(\sqrt{3} \times \sqrt{3}) \times \frac{48}{\sqrt{3}}$

=> $48\sqrt{3}$

4 0

3 years ago

IF the equation y = 2x + 1 were graphed on the given xy plane, where would the two lines intersect?

Greeley [361]

(0,1) (-0.5,0) i used desmos graphing calculator

5 0

3 years ago

Italian Barolo ~ Italy is famous for several types of wine. The region of Piedmont is famous for a type of wine called "Barolo".

slega [8]

Answer:

The sample proportion is 0.36635

Step-by-step explanation:

A confidence interval has two bounds, a lower bound and an upper bound.

The sample proportion is the halfway point betwen those two bounds, that is, the sum of those bounds divided by 2.

In this problem, we have that:

Lower bound: 0.2931

Upper bound: 0.4396

What is the sample proportion?

(0.2931 + 0.4396)/2 = 0.36635

The sample proportion is 0.36635

3 0

3 years ago

Write an equation to represent the following statement.

yarga [219]

Answer: j+47=55

Subtract 47 from both sides.

j= 8

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A bacteria population doubles every minute. Explain why this population growth cant be modeled on a graph

Kisachek [45]

Answer:

It can be modeled on an exponential graph

Step-by-step explanation:

Bacteria is <u><em>doubling</em></u> by the minute. This means that if there are 2 bacteria in the first minute, there would be 4 in the second, 8 in the third, 16 in fourth, and so on. This can be modeled using an exponential graph, where a number is constantly increasing by multiplying.

3 0

3 years ago