Multiply the fraction and simplify the answer 2/5×5/7×1/2

1 answer:

6 0

2/5 * 5/7 * 1/2 <== Group first pair of fractions to make
  multiplication easier

(2/5 * 5/7) * 1/2 <== Multiply fractions in parentheses, keeping in
  <span> (10/35) </span>   mind all rules of fraction multiplication (i.e.
(2/7)        cross-multiplying, etc.)

2/7 * 1/2 <== Multiply remaining fractions

1/7

The problem simplifies to 1/7.
Hope that helped =)

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Tcecarenko [31]

Answer: The range is $\{y \in \mathbb{R}\ | \ y \le -6\}$

Explanation:

The parabola opens down, forming a "frowny face" in a way (just without the eyes). Or you can think of it as a hill or mountain. This means that the vertex (-3,-6) is at the top of that mountain. It's the highest point of that parabola.

The range is the set of all possible y values. We see that y = -6 is the largest it can get. So y = -6 or y is smaller than this. We would then write $y \le -6$ to describe all the possible y values.

Therefore, the range is $\{y \in \mathbb{R}\ | \ y \le -6\}$

This translates to "y is a real number such that y is -6 or smaller".

So the second answer you wrote is close, but you forgot the "or equal to" portion of the inequality sign.

See below for a visual example of what's going on.

5 0

3 years ago

Peter is 2 years older than Winnie. Peter's age is 16 years less than seven times Winnie's age. The equations below model the re

GarryVolchara [31]

Given equations:
P=w+2
p=7w-16
Compare both equations
7w-16=w+2
Add 16 to both sides.
7w=w+18
Subtract w from both sides.
6w=18
Divide both sides by 6.
w=3, which is the age of Winnie.
Now Peter's age=3+2=5 years

Option A is the correct method to find the age of Peter and Winnie.

7 0

3 years ago

Read 2 more answers

I need help please?!!!!!

ozzi

Answer:

Step-by-step explanation:

plug in the number 4, it would be 5•4-12

Do 5•4=20

20-12=8

7 0

3 years ago