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3 years ago

I don't know how to do anything. I basically need help with everything

Mathematics

2 answers:

lutik1710 [3]3 years ago

5 0

Okay,

Radius, is half of the diameter.
Diameter, is the line that splits the circle in half.

1). R=50 D=100
2). R=10 D=20
3). R=5 D=10
4). R=29 D=58
5). R=11 D=22
6). R=31.5 D=63
7). R=45 D=90
8). R=7 D=14
9). R=49 D=98

uysha [10]3 years ago

4 0

For Diameter you either add the half (Radius) to itself

to get a radius (half from the middle) you divide the Diameter(the whole circle) by 2

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When a deposit of $1000 is made into an account paying 2% interest, compounded annually, the balance, $B, in the account after t

labwork [276]

Answer:

The average rate of change in the balance over the interval t = 0 to t = 5 is of $20.82 a year. This means that the balance increased by $20.82 a year over the interval t = 0 to t = 5.

Step-by-step explanation:

Given a function y, the average rate of change S of y=f(x) in an interval $(x_{s}, x_{f})$ will be given by the following equation:

$S = \frac{f(x_{f}) - f(x_{s})}{x_{f} - x_{s}}$

In this problem, we have that:

$B(t) = 1000(1.02)^{t}$

Find the average rate of change in the balance over the interval t = 0 to t = 5.

$B(0) = 1000(1.02)^{0} = 1000$

$B(5) = 1000(1.02)^{5} = 1104.08$

Then

$S = \frac{1104.08 - 1000}{5-0} = 20.82$

The average rate of change in the balance over the interval t = 0 to t = 5 is of $20.82 a year. This means that the balance increased by $20.82 a year over the interval t = 0 to t = 5.

8 0

3 years ago

I NEED HELP PLS!!!!

hram777 [196]

Answer:

Step-by-step explanation:

For these kind of problems, its best to use a Venn Diagram.

Lets break down the information:

There are 50 students total.

25 take Math competiton classes.

29 take Geometry

12 take history and no math classes

19 take both math classes

Now, make a Venn Diagram.

[Look at the photo attached. Also, the blank spaces in the Venn Diagram are ones that no student takes.]

The 12 taking history and no math classes and 3 kids not taking any of those classes look like they're the only ones not taking either math class.

12 + 3 = 15.

So the answer is 15.

[I'm not sure if this is correct or if I made a mistake so please let me know! Thank you! I hope this helps!]

5 0

3 years ago

Choose the equations that are not linear equations. - x - y = 2, x^2 + y = 4, x/2 - y^3 = 1, x = 5

tekilochka [14]

Answer:

x^2 + y = 4
x/2 - y^3 = 1

Step-by-step explanation:

Any equation with a product of variables, or with a variable in an exponent or denominator, is not a linear equation. Here, "product of variables" includes powers and roots—any expression with an exponent other than 1, or a total of exponents other than 1.

7 0

2 years ago

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Tasya [4]

Answer:

- 2/3

Step-by-step explanation:

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6 0

3 years ago

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A movie theater sends out a coupon for 85% off the price of a ticket. Write an equation for the situation, where y is the pri

ra1l [238]

Answer:

$y=0.15x$

Step-by-step explanation:

Given:

Original price of the ticket is $x$

Price after using the coupon is $y$

Coupon discount is 85% of $x=0.85x$

Therefore, the price after applying coupon is given as the difference of the original price and the coupon discount. That is,

$y=x-0.85x=x(1-0.85)=0.15x\\\therefore y=0.15x$

The graph is shown below. The graph passes through the origin as the above relationship is a proportional relationship.

The line $y=0.15x$ strictly remains in the first quadrant as both $x$ and $y$ can't be negative as they represent price of tickets and price can never have negative values. Hence, only the first quadrant has both the values of $x$ and $y$ positive.

3 0

3 years ago