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ira [324]
3 years ago
9

(08.05 LC) Which two-dimensional shape can be rotated about the y-axis to create a cone?

Mathematics
2 answers:
gogolik [260]3 years ago
6 0

Answer:

Right triangle

Step-by-step explanation:

Just imagine a rotating door in the shape of a right triangle.

Illusion [34]3 years ago
4 0

Any right triangle can.

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For the years from 2002 and projected to 2024, the national health care expenditures H, in billions of dollars, can be modeled b
dmitriy555 [2]

Answer:

2019.

Step-by-step explanation:

We have been given that for the years from 2002 and projected to 2024, the national health care expenditures H, in billions of dollars, can be modeled by H = 1,500e^{0.053t} where t is the number of years past 2000.

To find the year in which national health care expenditures expected to reach $4.0 trillion (that is, $4,000 billion), we will substitute H=4,000 in our given formula and solve for t as:

4,000= 1,500e^{0.053t}

\frac{4,000}{1,500}=\frac{ 1,500e^{0.053t}}{1,500}

\frac{8}{3}=e^{0.053t}

e^{0.053t}=\frac{8}{3}

Take natural log of both sides:

\text{ln}(e^{0.053t})=\text{ln}(\frac{8}{3})

0.053t\cdot \text{ln}(e)=\text{ln}(\frac{8}{3})

0.053t\cdot (1)=0.9808292530117262

\frac{0.053t}{0.053}=\frac{0.9808292530117262}{0.053}

t=18.506212320

So in the 18.5 years after 2000 the expenditure will reach 4 trillion.

2000+18.5=2018.5

Therefore, in year 2019 national health care expenditures are expected to reach $4.0 trillion.

7 0
3 years ago
Need help thank you very much
Zarrin [17]

Answer:

a)  -    9/2   or   -0,45

b)  -   3/5    or -0,6

c)   -4

d)  1

e)  -2

d)  0

Step-by-step explanation:

4 0
2 years ago
Solve the system by substitution.
kirill [66]
<h2>Answer:</h2>

x = 1

y = 1

<h3>Step-by-step explanation:</h3>

y=-3x+4\\ y=x

Substitute into one of the equations

-3x+4=x

Rearrange variables to the left sider of the equation

-3x-x=-4

Combine like terms

-4x=-4

Divide both sides of the equation by the coefficient of variable

x=\frac{-4}{-4}

Determine the sign for multiplication or division

x=\frac{4}{4}

Cross out the common factor

x=1

Substitute into one of the equations

y=1

The solution of the system is

\left \{ {{x=1} \atop {y=1}} \right.

<em>I hope this helps you</em>

<em>:)</em>

8 0
2 years ago
Plz help with this scientific notation<br>​
RideAnS [48]

Answer: 3.99 x 10^16

7 0
3 years ago
Quadrilateral ABCD is a parallelogram .if angle A=3x° and angle c=120 then find the value of x​
Gnoma [55]

Answer:

5 0
2 years ago
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