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WITCHER [35]
3 years ago
5

Evaluate a2 + b for a= 1/2 and b= -1/2

Mathematics
2 answers:
iren [92.7K]3 years ago
6 0
Since a = 1/2 and b = -1/2,
1/2 x 2 = 1
+
-1/2 =

0.5 or 1/2
kotegsom [21]3 years ago
4 0

Answer:

Step-by-step explanation:

a^2 + b

(1/2)^2 - 1/2

1/4 - 1/2

1/4 - 2/4 = -1/4

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Are these equvilant and what properties are they i need the answer asap
marta [7]
18. equivalent
16x5 does equal 10x8
19. equivalent
13-0 does equal 0
20. Not equivalent
12-2 doesn’t not equal 7-3
For all three of these equations you have to use PEMDAS (systems of equations) so first you solve everything that’s in parentheses, then any exponents, followed by multiplication,division,addition, and lastly subtraction. You MUST follow that order to get the correct answer.
6 0
3 years ago
Suppose that the total cost of flatiron TVs is given by the function TC(Q) = 500Q + 300 dollars, where Q is the number of TVs pr
Harrizon [31]

The value of TC(10) is 5300 Dollars

Given function is TC(Q) = 500Q +300 dollars

We need to calculate the value for TC (10)

As we know that the equation given is TC(Q) = 500Q + 300 dollars

Q is the number of TVs produced

Therefore, The value of Q is 10 for TC(10)

Substituting the value of Q

in the total cost of flatiron TVs given by function TC(Q) = 500Q + 300 dollars That Q= 100,

TC(10) = 500(10)+300 dollars

∴ TC (10) = 5000+300 dollars

∴ TC (10) = 5300 dollars

Hence the value of TC(10) is 5300 Dollars

Learn more about Substitution method here

brainly.com/question/22340165

#SPJ10

7 0
2 years ago
What Is the percent equal to 3/10
lianna [129]
30 %
3/10 * 10 = 30/100
30/100= 30%
6 0
3 years ago
Dr. Ashby is studying the heart rate of adult men. Preliminary data suggests that the standard deviation of heart rates for adul
jok3333 [9.3K]

Answer:

n=42 adult men

Step-by-step explanation:

-The minimum sample size to get a desired margin of error, E is calculated using the formula:

n\geq( \frac{z\sigma}{E})^2

-Given that \sigma=7.5, \ \ E=3\ , \ z_{0.005}=2.58, we can substitute to solve for n in the above formula:

n\geq (\frac{z\sigma}{E})^2\\\\\therefore n=(\frac{z_{\alpha/2}\sigma}{E})^2\\\\=(\frac{2.58\times7.5}{3})^2\\\\=41.6025\approx42

Hence, the desired minimum sample size, n is 42 adult men.

4 0
3 years ago
Please help me with this question....Thanks
sineoko [7]

Answer: Yes.

Step By Step Explanation:

7 0
3 years ago
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