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4 years ago

Please help, how would I solve this? Which letter is the correct answer? Thanks!!!

Mathematics

2 answers:

hoa [83]4 years ago

8 0

I got D. 7.5 because the sides are in a 4 to 1 ratio. The corresponding side of 40 on the smaller triangle is 10 and 40/10 is 4. to find the corresponding side of 30, do 30/4 and you get 7.5

bearhunter [10]4 years ago

3 0

The figures are similar, therefore they have corresponding proportional sides. So, match up the corresponding sides and set up a proportion.

40/30 = 10/x

cross multiply and divide to get 7.5

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As every Girl Scout knows, statistics teachers seriously love Girl Scout Cookies. The number of boxes of GS cookies statistics t

Alexandra [31]

Answer:

a) 0.75

b) 0.0625

c) 0.1875

d) 0.375

Step-by-step explanation:

Let's start by first finding the probability a teacher orders 6 boxes. Since it is a four sided dice, the probability of getting a 1 is going to be 0.25.

Similarly, for any other number on the dice, the teacher orders 2 boxes. We can think of this as NOT rolling a 1. Using our previous answer, this comes out to be: 1 - 0.25 = 0.75

It should be remembered in the following answers that teachers ordering 6 or 2 boxes are not influenced by the results of other teachers. These are statistically independent events.

a) As given above, this probability is 0.75

b) The probability that both teachers order 6 boxes will be their individual probabilities multiplied. This comes out to be: 0.25 x 0.25 = 0.0625

c) Like in part (b), this is both of their probabilities multiplied:

0.25 x 0.75 = 0.1875

d) This is nearly the same as part (c), but with a little twist. The order matters. There are two scenarios:

First teacher gets 6 boxes, and the second gets 2.
First teacher gets 2 boxes, and the second gets 2.

Both of these events have a probability of 0.1875, as shown in (c). To get the total probability of this event happening, we must add these together:

0.1875 + 0.1875 = 0.375

4 0

3 years ago

Find the sine and cosine of a 60° angle<br><br> find the sine and cosine of a 30° angle

Ymorist [56]

Answer:

Using the 30-60-90 triangle to find sine and cosine

sin(60 degrees) = 2√3 4.

sin(60 degrees) = √3 2.

sin(30 degrees) = 2 4.

sin(30 degrees) = 1 2.

cos(60 degrees) = 2 4.

cos(60 degrees) = 1 2.

cos(30 degrees) = 2√3 4.

cos(30 degrees) = √3 2.

7 0

3 years ago

Apples: $(2x) per pound

Ludmilka [50]

Answer:

Shopper spend $3 on Apples, $4 on Grapes and $3.5 on Oranges

Step-by-step explanation:

Cost of one pound of Apple = $2x

Cost of one pound of Grapes = $(6x-5)

Cost of one pound of Oranges = $(x+2)

A shopper purchases one pound each of apples, grapes, and oranges and spends $10.50.

It can be written as: $2x+6x-5+x+2=10.50$

We need to find how much the shopper spend on each fruit.

First we need to find value of x by solving equation

$2x+6x-5+x+2=10.50$

Solving:

$2x+6x+x+2-5=10.50\\9x-3=10.50\\9x=10.50+3\\9x=13.5\\x=\frac{13.5}{9}\\x=1.5$

The value of x is: x=1.5

Now finding cost of one pound each fruit by putting x=1.5

Cost of one pound of Apple = $2x = 2(1.5) = $3

Cost of one pound of Grapes = $(6x-5) = (6(1.5)-5)= $4

Cost of one pound of Oranges = $(x+2)=(1.5+2)=$3.5

So,

Cost of one pound of Apple = $3

Cost of one pound of Grapes = $4

Cost of one pound of Oranges = $3.5

So, shopper spend $3 on apples, $4 on Grapes and $3.5 on Oranges

3 0

3 years ago

What is the degree of the polynomial function shown in the graph?

dusya [7]

The answer to your Q is 4

3 0

3 years ago

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Nat2105 [25]

The scale should be about 5inchesb

6 0

3 years ago