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aev [14]
3 years ago
9

If c= 8 what is the value of 4c + ( 4-3) Also, if t= 5, what is the value of 16-3t?

Mathematics
2 answers:
Luden [163]3 years ago
8 0
Hope this is the brainliest answer and hope this helped you learn★

ANSWER:

1st one- 33
2nd one- 1

STEP BY STEP:

First let's rewrite the equation

4c + (4-3)

Now the paper told us that c=8. So let's take out the letter c in the equation and substitute it for its value.

4(8) + (4-3)

Now we solve using PEMDAS. We start with the parentheses which is (4-3).

4(8) + 1

Now lets go down to multiplication. 4(8)

32 + 1

That is our final answer for #1. 33.

_________________________________

Now let's move on to equation #2. Let's rewrite the equation.

16 - 3t

Just as we did before, we can substitute t for the given value. In this case, 5.

16 - 3(5)

For the next step we move on to multiplication. Let's multiply 3(5)

16 - 15

Now we have a simple subtraction problem to give us our answer! The answer for #2 is now 1.
lions [1.4K]3 years ago
6 0
The first answer is 33.
And secomd one is 1.

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nika2105 [10]
2/5 = 40%
43%
13/19 = 68.4%

Juan
7 0
4 years ago
What is 150,000,000 in scientific notion, PLEASE answer asap im so far behind!!
dybincka [34]

To write a number in scientific notation, you need to write the number as a product of a number from 1 to under 10 multiplied by a integer power of 10.

First, what number from 1 to under 10 can you get out of the digits of 150,000,000 just by changing the decimal point? The answer is 1.5 since 1.5 is greater than or equal to 1 and less than 10.

150,000,000 = 1.5 * 100,000,000

Now we change 100,000,000 into a power of 10. A 1 followed by a number of zeros is the same as 10 to the power equal to the number of zeros. In 100,000,000 the 1 is followed by 8 zeros, so 100,000,000 = 10^8.

150,000,000 = 1.5 * 10^8

6 0
3 years ago
1- AT OAKNOLL SCHOOL, 90 OUT OF 270 STUDENTS OWN COMPUTERS. WHAT PERCENT OF STUDENTS OF OAKNOLL SCHOOL DO NOT OWN COMPUTERS? ROU
V125BC [204]
1. 270÷90=3=30% have and 70% don't have a computer.
8 0
4 years ago
Read 2 more answers
The test scores of a geometry class are given below. 90, 75, 72, 88, 85 The teacher wants to find the variance for the class pop
ella [17]
The data given as a whole would be called ungrouped data. Now to get the variance, you will need the formula:

s^2=   <u>Σ(x-mean)^2</u>
                   n      

x = raw data
mean = average of all data
n = no. of observations
s^2 = variance

Now we do not have the mean yet, so you have to solve for it. All you need to do is add up all the data and divide it by the number of observations. 

Data: <span>90, 75, 72, 88, 85        n= 5  
</span>Mean=<u>Σx</u>
            n
Mean = <u>90+75+72+88+85 </u>  = <u>410</u> = 82
                        5                        5

The mean is 82. Now we can make a table using this.

The firs column will be your raw data or x, the second column will be your mean and the third will be the difference between the raw data and the mean and the fourth column will be the difference raised to two. 

90-82 = 8
8^2 =64

75-82 = -7
-7^2 =49

72-82 = -10
-10^2=100

88-82=6
6^2 = 12

85-82=3
3^2=9

Now you have your results, you can now tabulate the data:

 x      mean         x-mean        (x-mean)^2     
90       82                8                      64                       
75       82               -7                      49
72       82              -10                    100
88       82                6                       36
85       82                3                       9

Now that you have a table, you will need the sum of (x-mean)^2 because the sigma sign Σ in statistics, means "the sum of."

64+49+100+36+9 = 258

This will be the answer to your question. The value of the numerator of the calculation will be 258.

 
<u>
</u>
6 0
4 years ago
What's -20 times -10 times -1 times 0
neonofarm [45]
Zero.
Anything times zero is zero.
-20 * -10 = 200
200 * -1 = -200
-200 * 0 = 0
4 0
3 years ago
Read 2 more answers
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