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scoray [572]
2 years ago
9

Evaluate the algebraic expression. y^2+x+y when x=-3 and y=-4

Mathematics
1 answer:
Amanda [17]2 years ago
5 0

Step-by-step explanation:

you put the values in place of the variable names and calculate.

y² + x + y

(-4)² + -3 + -4 = 16 - 3 - 4 = 16 - 7 = 9

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Which set of points contains the solutions to the inequality y ≤ 8x – 3? A. {(–3,–17), (4,11), (7,19)} B. {(3,22), (2,3), (8,27)
Nady [450]

Just to clarify, here are the answer choices:

A. {(–3,–17), (4,11), (7,19)}

B. {(3,22), (2,3), (8,27)}

C. {(4,29), (–6,–58), (7,19)}

D. {(–2,–18), (4,37), (5,15)}


And all of the points in the set must satisfy y ≤ 8x – 3.

The only way is to go through each answer choice, eliminating each that is wrong.


A) -17 ≤ -3*8-3

-17 ≤ -21 ✘

B) 22 ≤ 3*8-3

22 ≤ 21 ✘

C) a) 29 ≤ 8*4-3

29≤29 ✔

   b) -58 ≤ 8*(-6)-3

-58 ≤ -49 ✔

   c) 19 ≤ 7*8-3

19 ≤ 53  ✔


It becomes clear that the answer is C. But just to make sure, we must check D to make sure C is really the answer.

D) -18 ≤ 8(-2)-3

-18 ≤ -19 ✘


That means that C is the answer.



8 0
3 years ago
Yasmine needs to create invitation for the party. She has 3/4 of an hour to make the invitations. It takes her 1/12 of an hour t
aivan3 [116]

Answer:

one card takes 1/12 of an hour or 60/12=5 minutes.

she has 3/4 of an hour or 60×3/4=45 minutes

number of cards she can make =45/5=9

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The answer should be 6f. You multiply the 3 and the 2 and then put the f at the end (:

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7/11 is 0.006 percent.
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