How do i answer this question?

Edwin needs to buy a car, a truck, and a motorcycle for his shipping business. He wants the car to be red or yellow; the truck t

Amanda [17]

We can solve problems like this using multiplication rules. Since the order of colors and combinations does not matter, we can multiply all values in any order we so choose. In this case, our values are colors and vehicles:

Car: Red, Yellow
Truck: Black, White, Silver
Motorcycle: Green, Blue, Orange

We have 2 options with a car, 3 options with a truck, and 3 options with a motorcycle. Since he wants one of each, we will multiply all of the color options together:

2 x 3 x 3

= 18

Edwin has 18 different combination of vehicles to choose from.

8 0

3 years ago

Read 2 more answers

The length of one leg of an isosceles right triangle is 3 ft. What is the perimeter of the triangle?

ExtremeBDS [4]

Check the picture below.

6 0

2 years ago

Information for the park trails is displayed at the entrance to the park office.

Lisa [10]

So you can use tan here, which is opposite/adjacent. (We're looking for the Adjacent)

Since we know Trail E is 1700, we're looking for the patch of trail A that is the adjacent. So if we put 42 into a tan calculator we get about 0.9.

So that means that 1,700 / adjacent = 0.9.

So we can also say

1,700/0.9 = adjacent

or, 1,700/0.9 = 1888.89

Now, we have the little patch of trail A in the smaller right triangle. We want to find the patch of trail A in the larger right triangle.

So just do 5,000 - 1,888.89

You get 3111.11

So if we know that's that, and we're looking for the hypotenuse, or Trail B, we can use cosine, because that's adjacent / hypotenuse.

So 42 in a cosine calculator is 0.74 ish.

So 3111.11 / hypotenuse = 0.74

Or 3111.11 / 0.74 = hypotenuse

Or 3111.11 / 0.74 = 4204

So Trail C should be 4204 feet long.

7 0

3 years ago

A 95% confidence interval is (70,110). what is the margin for error? A. 19 B.38 C.20 D.40

goldfiish [28.3K]

Answer:

C.20

Step-by-step explanation:

Confidence interval concepts:

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

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.

The margin of error is the difference between the two bounds, divided by 2.

In this question:

Lower bound: 70

Upper bounf: 110

Margin of error:

$M = \frac{110 - 70}{2} = \frac{40}{2} = 20$

Thus the correct answer is given by option C.

3 0

3 years ago

Can someone help me with this please

stellarik [79]

Ok so we'll go ahead and solve for y first - we just need to get it alone on one side of the equal sign

Step 1: subtract 2x from each side

2x - 7y - 2x = 19 - 2x

This cancels out the 2x on the left, giving us

-7y = 19 - 2x

Step 2: divide both sides by -7

$\frac{-7y}{-7}$ = $\frac{19}{-7}$ + $\frac{-2x}{-7}$

This gives us

y = -19/7 + 2x/7

That should be your answer for the first question. Now solving the next parts are easy. All you need to do is plug in x.

When x = -3

y = -19/7 + 2x/7

y = -19/7 + 2(-3)/7

y = -19/7 - 6/7

y = -25/7

When x = 0

y = -19/7 + 2x/7

y = -19/7 + 2(0)/7

y = -19/7

When x = 3

y = -19/7 + 2x/7

y = -19/7 + 2(3)/7

y = -19/7 + 6/7

y = -13/7

Hope that helps! Feel free to ask if I can help with anything else :)

7 0

3 years ago

How do i answer this question?​

How do i answer this question?