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alexdok [17]
4 years ago
8

4.5 is 0.9% of what number

Mathematics
1 answer:
alexdok [17]4 years ago
4 0

Answer:

500

Step-by-step explanation:

Lets make the unknown number the letter a

0.9% can also be shown as 0.9/100

so 0.9 of a = 4.5

x(0.9/100) = 4.5

multiply 0.9 by x

(0.9×a)/100 = 4.5

multiply both sides by 100

0.9×a = 450

divide both sides by 0.9

a = 500

there you have it

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Given that cos 57° = 0.545, enter the sine of a complementary angle.<br> sin<br> h
noname [10]

Answer:

sin 33° = 0.545

Step-by-step explanation:

complementary angle to 57° is 33°

sin 33° = 0.545

4 0
3 years ago
Find an equation for the line of best fit for the table below.
Luden [163]

Answer:

first or last depending how you are rounding the decimal

=> the best fit is the first one

Step-by-step explanation:

y = 2.55x - 2.15 when x = 5 => y = 10.6 approximately 11

y = 3.21x - 1.75 when x = 5 => y = 14.3 cannot equal or approximately  11

y = -2.15x + 2.55 when x = 5 => y = -8.2 cannot equal or approximately  11

y = 1.75x + 3.15 when x = 5 => y = 11.9 approximately 11

8 0
3 years ago
Write a rule for finding the value of any base with an exponet of 0
Julli [10]
The exponent of 0 makes everything equal to 1
7 0
4 years ago
Which algerbraic expression is not equivalent to 13x + 10​
atroni [7]
There are no common factors between the two terms
13
x
and
10
- see explanation below.
Explanation:
First, we can try factoring the constants in each term:
13 is a prime number and therefore can only be factored to 1 and 13.
10 can be factored as (1 x 10) or (2 x 5).
Because there are no common factors other than
1
the constants cannot be factored.
And, because there is no
x
in the second term (10), we cannot factor an
x
out of the two terms.
Therefore this expression cannot be factored.
4 0
3 years ago
X+4/9=3/4 what is x?
umka2103 [35]

Answer:

11/36

Step-by-step explanation:

To answer this, you must first convert your fractions to have the same denominators (so you can add and subtract them). I switched it to 36ths. So, the equation would be x+16/36=27/36. When you subtract 16/36 from 27/36 you get 11/36. This cannot be simplified, so 11/36 is the answer. I hope it helps.

6 0
3 years ago
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