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DerKrebs [107]
3 years ago
9

I don’t understand these type of questions

Mathematics
1 answer:
storchak [24]3 years ago
6 0

Answer:

5=135

7=45

Step-by-step explanation:

Set them equal to 180. So i started plugging in numbers and subtracting them by 90. Then add it back to the number until i got 180.

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WILL GIVE BRAINLIEST
Montano1993 [528]

Step-by-step explanation:

Use the compound interest formula:

A = P( 1 + r/n)^nt

A is the amount at the end

P is the principal or original amount.

R is annual rate as a decimal (you have to convert)

N is the # of compounding periods in a year (quarterly means 4)

T is time in years

A = 500( 1 + 0.0475/4)^(4×20)

This would be $1285.64 when fully computed.

3 0
3 years ago
The temperature of a chemical compound, in degrees Celsius, changes when the compound is exposed to UV light. The table below sh
SIZIF [17.4K]

So, we are given the y intercept, and since we know c is the same as the y value of the y intercept, we know that c=15.

From there we can pick any two of the points given to us to find our a and b.

Let's use (4,17) and (8,23) becase they are whole numbers.

17=16a+4b+15\\ 23=64a+8b+15 \implies \\ 2=16a+4b\\ 8=64a+8b \implies\\ 8=64+16b \\ 8=64+8b \implies \\ 0=8b \implies\\ b=0

So, with b=0, we can plug it back into the first equation to get:17=16a+4b+15 \implies\\ 2=16a \implies\\ a=\frac{1}{8}

So our quadratic is \frac{1}{8}x^2+15

5 0
3 years ago
Read 2 more answers
1. Determine if each pair of rates are equivalent (Equal) Explain your reasoning: 12 posters for 36 students and 21 posters for
Sloan [31]

<em>Answer:264 students</em>

Step-by-step explanation:You have to add to get you answer.I'll show you how I got 264:

12+12=24

24+36=60

60+36=96

96+21=117

117+21=138

138+63=201

201+63=264

Your answer is: 264 students

5 0
3 years ago
Evaluate the equation below
meriva

Answer:

-2

Step-by-step explanation:

2(x-4)+3x-x² for x = 3

is : 2(3-4) +3(3)-3² = -2  ... answer : B

3 0
3 years ago
Complete the table for the given rule.<br> Rule: y= 1/3x<br> ​
AlladinOne [14]

Answer:

12 - 4

3 - 1

18 - 6

Step-by-step explanation:

This is simply a matter of pluggin in the method, so let's do it shall we?

It wants you to put the a third of each number, so you'll divide each number by three to get what the third is!

VISUAL REPRESENTATION:

12÷3 = 4

3÷3 = 1

18÷3 = 6

8 0
4 years ago
Read 2 more answers
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