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Irina-Kira [14]
4 years ago
13

Evaluate the following expression using the values given: (1 point)

Mathematics
1 answer:
garik1379 [7]4 years ago
4 0
3(3)^2 - (-2)^3 - (-2)^3 + 5
27 - (-8) - (-8) +5 
35 - (-8) + 5
43 + 5
48
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What is -0.38,-3/8,-0.04 in order from least to greatest
ratelena [41]
-0.04, -3/8, -0.38 is the answer
5 0
3 years ago
Prove that if a and b are integers, then a^2-4b egal or non-egal 2
Lera25 [3.4K]

Answer:

tex]a^2 - 4b \neq 2[/tex]

Step-by-step explanation:

We are given that a and b are integers, then we need to show that a^2 - 4b \neq 2

Let  a^2 - 4b = 2

If a is an even integer, then it can be written as a = 2c, then,

a^2 - 4b = 2\\(2c)^2 - 4b =2\\4(c^2 -b) = 2\\(c^2 -b) =\frac{1}{2}

RHS is a fraction but LHS can never be a fraction, thus it is impossible.

If a is an odd integer, then it can be written as a = 2c+1, then,

a^2 - 4b = 2\\(2c+1)^2 - 4b =2\\4(c^2+c-b) = 2\\(c^2+c-b) =\frac{1}{4}

RHS is a fraction but LHS can never be a fraction, thus it is impossible.

Thus, our assumption was wrong and a^2 - 4b \neq 2.

7 0
3 years ago
Arrange the following numbers in order from least to greatest 7.93. 7.9. 7.72​
Alexxx [7]

Answer:

7.72, 7.9, 7.93

Step-by-step explanation:

Since all the number's ones place begins with 7, you would want to use the tenth's place to solve this problem.

You can see that there is 7, 9, and 9 in the tenths place and that already makes 7 the least number.

7.9 is equivalent to 7.90 so we can see that 7.90 is less than 7.93. That makes 7.93 the greatest number and 7.72 the least.

7.72<7.9<7.93

3 0
3 years ago
PLEASE HELP !!!! Please help !!!
BartSMP [9]

Answer:

1450$

Step-by-step explanation:

follow the basic steps to calculate the mean.

1. add up all of the numbers in the data set. in this case you would add up the all of the money since the question is asking for that.

2. divide by the amont of numbers there are.

1400+800+2150=4350

4350÷3=1450

hope this helped :)

7 0
3 years ago
MEASURE HT (NEED ASAP!!)
Diano4ka-milaya [45]
I think it might be 120 but get someone else’s opinion
7 0
3 years ago
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