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3 years ago

Can someone help if you can’t tell I suck at math?

Mathematics

1 answer:

Ad libitum [116K]3 years ago

8 0

Answer:

Step-by-step explanation:

1. There will be 9 roses in total.

Probability Orange: 2/9

Probability Yellow: 3/9 = ⅓

Probability Pink: 4/9

2. 4/7 as there are 7 bowls in total and 4 are chocolate.

3. 4/10 = ⅖ (simplified) There are 10 fruits in total and 4 are apples.

4. 5/15 = ⅓ (simplified) There are 15 cars in total and 5 or them are cooper minis.

5. 2/6 = ⅓ (simplified) There are 6 textbooks and 2 of them are math.

6. 13/20 There are 20 drinks and 13 of them are lemonade.

7. There are 10 toys in total.

Probability toy cars: 3/10

Probability dolls: 2/10 = ⅕ (simplified)

Probability balls: 5/10 = ½ (simplified)

8. In total the number of red roses and lilies are 7. There are 10 flowers in total so the number of jasmines are 3. Therefore the probability of getting a jasmine is 3/10

9. 20/50 = ⅖ (simplified) There are 50 papers in total and 20 of them are yellow.

10. 8/18 = 4/9 (simplified) There are 18 buses and 8 of them are air conditioned.

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joan needs $60 for a class trip. She has $32. She can earn $4 an hour mowing lawns. How many hours must Joan to have the money s

Nookie1986 [14]

She already has 32$. And makes 4$ every hour of mowing lawns.

4 + 4 + 4 + 4 + 4 + 4 + 4 = 30 = 4 x 7 which equals 30

Joan needs to work 7 hours in total to get 28$.

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3 years ago

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A surveyor determines that the angle of elevation to the top of a building from a point on the ground is 31∘. he then moves back

atroni [7]

<h2>Hello!</h2>

The answer is:

The height of the building is 94.29 feet.

To solve the problem, we need to consider that two triangles are formed depending on the distance where the surveyor is standing.

We have a first triangle which its base will be called "x" and its height will be called "h" with an angle of elevation from a point on the ground, equal to 31°.

Also, we have a second triangle which base is equal to "x" + 57.1 feet, and a height "h", with an angle of elevation from a point on the ground, equal to 23.8°

We need to use a trigonometric identity that establishes a relationship between the height and the base. So, using the tangent trigonometric identity, we have:

$Tan(\alpha)=\frac{Opposite}{Adjacent}$

For the first triangle:

$Tan(31\°)=\frac{h}{x}$

$0.60=\frac{h}{x}$

$h=0.60*x=0.60x$

For the second triangle:

$Tan(23.8\°)=\frac{h}{x+57.1feet}$

$0.44=\frac{h}{x+57.1feet}$

$(0.44)*(x+57.1feet)=h$

$h=0.44x+25.14feet$

Then, making both equation equals, in order to find "x", we have:

$0.60x=0.44x+25.14feet$

$0.60x-0.44x=25.14feet$

$0.16x=25.14feet$

$x=\frac{25.14feet}{0.16}=157.13feet$

Then, we substituting "x" into any of the equations, we have:

Substituting into the first equation:

$h=0.60*x\\\\h=0.60*(157.13feet)=94.29feet$

Hence, the height of the building is 94.29 feet.

Have a nice day!

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3 years ago

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Find the missing values in the ratio table then write the equivalent ratios in the order they appear in the table

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Calories: 25,50,75,100

Servings: 1/3, 1/2, 1, 4/3

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3 years ago

What is solution for k-(-3) <=[less than or equal to] 4

Yanka [14]

K+3<=4

K<=1

This is the anwser.

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3 years ago

There is a prism with a pentagonal base the height is 8 cm the area of the pentagonal base is 30.5cm what is the volume of the p

astraxan [27]

Answer:

244 cm³

Step-by-step explanation:

Step 1: Given data

Height of the prism with a pentagonal base (h): 8 cm

Area of the pentagonal base (A): 30.5 cm²

Step 2: Calculate the volume of the prism with a pentagonal base

We have a regular pentagonal prism, that is, the 5 sides of the base are equal and we know the area of the base and the height of the prism. We can calculate its volume using the following expression.

V = A × h

V = 30.5 cm² × 8 cm = 244 cm³

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3 years ago