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3 years ago

4 problems I need help with- 40 pts! please help!

Mathematics

1 answer:

Vlada [557]3 years ago

8 0

I dont understand the first ques !!

But

2) Only a is correct
3)Only b is correct
4) Both a and b are correct !!

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Please answer I’ll make brainliest. I have other questions too that I’ll be posting shortly

liraira [26]

Answer:

13.3 (rounded in the tenth place)

Step-by-step explanation:

equation: a^2 + b^2 = c^2

What we know :

a = 20^2 = 400

b = what we are looking for

c = 24^2 = 576

Our equation will be looking like :

20^2 + b^2 = 24^2

400 + b^2 = 576

Now we subtract 400 into 576

which equals 176 now we square root it

and get 13.2664 but we gotta square root it and that will lead you to have 13.3 as your answer

8 0

3 years ago

How is pi made?????????(

AysviL [449]

You mean the digit right, well pie is not made, but formed by dividing the circumference and the diameter.

5 0

4 years ago

Read 2 more answers

The simple interest I ( in dollars) for a savings account is jointly proportional to the product of the time t (in years) and th

In-s [12.5K]

Answer:

Part a) The constant of variation is $r=0.0567$ or $r=5.67\%$

Part b) $I=\$662.03$

Step-by-step explanation:

Part a) Find the constant of variation.

we know that

The simple interest formula is equal to

$I=P(rt)$

In this linear direct variation the constant r represent the constant of proportionality

where

I is the Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem we have

$t=5/12\ years\\ P=\$3,892\\ I=\$92\\r=?$

substitute the values and solve for r

$92=3,892(r(5/12))$

$r=(92*12)/(3,892*5)$

$r=0.0567$

Part b) what will the interest be after 3 years

in this part we have

$t=3\ years\\ P=\$3,892\\ I=?\\r=0.0567$

substitute the values

$I=3,892(0.0567*3)=\$662.03$

5 0

3 years ago

A shop advertised a 22% off sale. If a coat originally sold for $255, find the decrease in price and sale price.

Umnica [9.8K]

It would be: 255 - (255 * 22%)
= 255 - (255 * 0.22)
= 255 - 56.1
= 198.9

In short, Decrease in Price is $56.1 & Sale Price is $198.9

Hope this helps!

8 0

3 years ago

Suppose that the terminal point determined by t is the point (3/5, 4/5).find the terminal point determined by pai-t

faltersainse [42]

The terminal point determined would be 2/3

3 0

4 years ago