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AVprozaik [17]
3 years ago
11

Implify 2x 2 - y for x = 3 and y = -2. 20 14 16 10

Mathematics
2 answers:
Anna11 [10]3 years ago
7 0

For this case we have the following expression:

2x ^ 2-y

We must simplify the expression for the following values:

x = 3\\y = -2

Substituting we have:2 (3) ^ 2 - (- 2) =

We have to:

- * - = +

So:

2 (3) ^ 2 - (- 2) = 2 * 9 + 2 = 18 + 2 = 20

The expression is simplified to 20.

Answer:

20

Option A

Nana76 [90]3 years ago
5 0
14because2 times 3=6 times 2= 12 plus 2
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Someone please help me
MariettaO [177]

Step-by-step explanation:

\frac{4}{7}x \: + \: \frac{5}{14}x \: = 39

\frac{8}{14}x \: + \: \frac{5}{14}x \: = 39

\frac{13}{14}x \: = 39

x = \frac{\cancel{39} \times 14}{\cancel{13}}

x = 3 × 14

x = 42

So, the solution of x is 42

#CMIIW

5 0
4 years ago
All points along a parallel are the same distance from the equator.
Sindrei [870]

The <em><u>correct answer</u></em> is:

A) True  

Explanation:

A parallel is an imaginary line that runs parallel to the equator and goes completely around the globe.

Since it is parallel to the equator, it will be the same distance from the equator at every point along the parallel.

5 0
3 years ago
Read 2 more answers
Is the point (-5,1) one the line y=-2x-9?
Lunna [17]
Y = -2x - 9

(-5,1)

y = -2(-5) -9

y = 10-9

y = 1

1 = 1

A/ Yes
6 0
3 years ago
A local lake has a fish population that follows a geometric series with these properties first time equals 48 ratio equals 1/4 d
kondaur [170]

Answer:

64.

Step-by-step explanation:

Sigma notation is ∑48(1/4)^(n-1).

Upper limit =   a1 / (1 - r)  where a1 = initial population and r = common ratio.

So it is 48 / (1 - 1/4)

= 48 / 3/4

= 48 * 4/3

= 64.

4 0
3 years ago
A multiple choice test has 12 questions each of which has 5 possible answers, only one of which is correct. If Judy, who forgot
pochemuha

Answer:

Not exactly sure but maybe these percentages that i found can help you

Step-by-step explanation:

if there are 12 questions then there are 12 correct answers out of 60 total answers 12 divided by 60 = 0.20 which is 20 percent so upon guessing she has a theoretical 20 percent chance to get all questions correct

7 0
3 years ago
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