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ruslelena [56]
2 years ago
9

Evaluate the expression when x=7 and y=-3. 5y2-x

Mathematics
2 answers:
DIA [1.3K]2 years ago
7 0

Answer:

-37

Step-by-step explanation:

It would be greatly appreciated if you gave me brainlest

natta225 [31]2 years ago
7 0
-37. You multiply first
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Referring to the figure, is the transformation a
valkas [14]

Answer:

yes.

Step-by-step explanation:

90 Degree Rotation. When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x).

5 0
2 years ago
Find 2x2 − 2z4 + y2 − x2 + z4 if x = −4, y = 3, and z = 2.<br><br> Is -3 the correct answer?
Ket [755]
We're given the algebraic expression 2x^2 - 2z^4 + y^2 - x^2 + z^4

By hypothesis, x = -4, y = 3 and z = 2

Let's replace each letter by its given value:

2x^2 - 2z^4 + y^2 - x^2 + z^4
2(-4)^2 - 2(2)^4 + (3)^2 - (-4)^2 + (2)^4
(2*16) - 2*16 + 9 - 16 + 16
32 - 32 + 9 - 16 + 16
9

So wrong. The correct answer is not -3, but 9.

Hope this helps! :D
6 0
3 years ago
David wants to complete a hypothesis test with the least amount of probability for error. If he sets the significance level to 1
Brrunno [24]

Answer:

He could increase the sample size

Step-by-step explanation:

In hypothesis testing, the error associated with the test is affected by a number of factors. The first factor is the level of significance, alpha. This is the probability of type 1 error. The probability of rejecting the null hypothesis when it is indeed true.

The second factor is the size of the sample used. The larger the sample, the smaller the error since the characteristics of the sample will be closer to those of the entire population on which inference is being made

8 0
3 years ago
Read 2 more answers
Which figured demonstrates a translation?
natulia [17]

the one where they are diagonal from one another


8 0
3 years ago
a machine takes 4.2 hours to make 7 parts. at that rate how many parts can the machine make in 28.8 hours
Karo-lina-s [1.5K]
In 1 hour, a machine could make:
7 \div 4.2
parts
In 28.8 hours, that machine make
7 \div 4.2 \times 28.8 = 4.8
parts
6 0
3 years ago
Read 2 more answers
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