According to the bar graph, which attribute is under investigation?

What is the answer? 3rd time posting. Worth 15 points. Explain

Gekata [30.6K]

KCC
7 units 7-4=3 (-9)-(-5)=
-9+5=(-4)
3+(-4)= 7

4 0

3 years ago

Read 2 more answers

Question 2

lina2011 [118]

Answer:

The firefighter should extend the ladder at 54° of elevation.

Step-by-step explanation:

Trigonometric Ratios

The ratios of the sides of a right triangle are called trigonometric ratios. There are six trigonometric ratios, sine, cosine, tangent, cosecant, secant, and cotangent.

The longest side of the triangle is called the hypotenuse and the other two sides are the legs.

Selecting any of the acute angles as a reference, it has an adjacent side and an opposite side. The trigonometric ratios are defined upon those sides.

Tangent Ratio:

$\displaystyle \tan\theta=\frac{\text{opposite leg}}{\text{adjacent leg}}$

The woman is trapped at 91 feet up from the ground, and the firetruck is 67 feet away from the building.

The wall, the ground, and the ladder form a right triangle, where θ is the horizontal angle of the ladder.

Being the height of the woman the opposite leg and the distance where the firetruck is parked, the adjacent leg:

$\displaystyle \tan\theta=\frac{91}{67}=1.3582$

The angle is calculated as the inverse tangent:

$\theta=arctan(1.3582)\approx 54^\circ$

The firefighter should extend the ladder at 54° of elevation.

4 0

3 years ago

The ratio of the number of teaspoons of sugar to the number of teaspoons of cream in a mixture is 3:2. Which of the following be

VikaD [51]

I think is the 2 one
MAYBE i am not sure

8 0

3 years ago

Read 2 more answers

HELPP PLEASE FAST!! a store has televisions on sale for 20% off the original price. The original price of a television is 150 be

Margarita [4]

Method 1: A pure algebraic approach

The unknown in this problem is the percent of decrease. A percent of decrease is the percentage of the original price that was deducted from the original price to obtain the sale price. We could write a "word equation" for this process like this:

original price - (percent of decrease)(original price) = sale price

Since the percent of decrease is the unknown in this problem, we'll call the percent of decrease x%.

Here's what we know so far:

The original price was $200

The sale price was $170

The percent of increase was x%

Putting this information in our word equation gives us an algebraic equation:

200 - (x%)(200) = 170

What do we do with the percent sign in this equation? "Percent" means "out of 100", so x% means x out of 100, or . Now we have this:

200 - (200) = 170

Now we'll solve our equation:

200 - (200) = 170

200 - 2x = 170

-2x = -30

x = 15

So the percent of decrease is 15%

Method 2: A method involving pure arithmetic.

If we know the original price and the sale price, we can find the percent of decrease in two steps:

Find the amount of decrease

Divide the amount of decrease by the original amount

This will give us the percent of decrease (written as a decimal number). We can then write the decimal as an equivalent percent to find our final answer.

Let's use method 2 on the same problem:

Frank bought a new television set on sale. If the TV's original price was $200 and Frank paid $170 for the TV, what was the percent of decrease?

First, let's find the amount of decrease:

Amount of decrease = 200 - 170 = 30

So the price decreased by $30.

Next, we'll find the percent of decrease, and rewrite the decimal answer as a percent:

Percent of decrease = = = .15 = 15%

So the percent of decrease is 15%

Before we leave the problem, let's check our answer:

Original price = $200

Price reduced by 15% of original price = 200(.15) = $30

Sale price would then be = $200 - $30 = $170

Our answer checks. We're done! Me not know if correct.

3 0

2 years ago

Y=4x-18 Ordered pairs

Nitella [24]

There are any number of ordered pairs that work for this equation. Below are some examples.

(0, -18) (2, -10) (5, 2)

In order to find these and any others, you simply select a value for x and plug into the equation to find y. Below is an example.

y = 4x - 18

y = 4(0) - 18

y = 0 - 18

y = -18

(0, -18)

8 0

3 years ago