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taurus [48]
3 years ago
5

A student evaluated −4 + (−9 12) and got an answer of 5 1/2. What might the student have done wrong?

Mathematics
1 answer:
777dan777 [17]3 years ago
3 0

Answer:

The student added +4 instead of -4 so instead of getting -13 1/2 they got 5 1/2 somehow since even if they did that it should be -5 1/2.

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Write an expression that is equivalent to 4n – 12 + 8y + (-3n).
Dimas [21]
It would be 1n - 12 + 8y.
4n - 3n = 1n
12 + 8y don’t mix so we can leave it.
Therefore: 1n - 12 + 8y
7 0
3 years ago
If 2a+3<10 then which of these could be a value of a
solmaris [256]

Answer:

a < 3.5

Step-by-step explanation:

2a+3 <10

subtract 3 from each side

2a +3 -3 < 10-3

2a < 7

divide by 2

a < 7/2

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6 0
3 years ago
3 1/2 divided by 2 1/4
liberstina [14]
3 1/2 divided by 2 1/4 = 1.55555556

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8 0
3 years ago
Solve the equation. Explain each step and identify the property used to reach each step.
Tom [10]

To isolate x, we will first subtract 0.8 from both sides.

0.6x + 0.8 = 1.4

-0.8 -0.8

0.6x = 0.6

Now all we have to do is divide both sides by 0.6, because it is the number besides x.

0.6x/0.6 = 0.6/0.6

x = 1

So you get the answer of x = 1.

7 0
2 years ago
Can someone please help me out with my grades are bad
dolphi86 [110]

Answer:

Step-by-step explanation:

In a dilatation for find the new coordinates we have to multiply the initial value for the the scale factor

A’(-3, 12)

B’(9,6)

C’(-9,-3)

so the general rule is:

(x,y) -> (3x, 3y)

7 0
3 years ago
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