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Mathematics

1 answer:

fenix001 [56]3 years ago

3 0

Sandi did not follow PEMDAS. She added before multiplying and dividing. Her answer should be 18 because 6 • 4 = 24, 2 / 2 = 1, 24 + 1 = 25, 25 - 7 = 18

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Helpppppp please and thank you guys!

Effectus [21]

Answer:

b = 3w; 54

Step-by-step explanation:

Since the student reads 3 books in one week, we know that one book is three times the amount of weeks, or b = 3w

We can plug in 18 for w to find how many books are read in 18 weeks

b = 3w

b = 3(18)

b = 54

So after 18 weeks she has read 54 books

3 0

3 years ago

Use distributive property to simplify <br> -(x+3y-z)

UkoKoshka [18]

Answer:

-x - 3y + z

Step-by-step explanation:

Think of a imaginary 1(-1 because of the sign) in front of the parenthesis and distribute it to the other number and so x will become -x, 3y will become -3y and -z will become z because two negatives make a positive.

4 0

3 years ago

If (-1, y) lies on the graph of y=2^2x then y=

zubka84 [21]

Answer:

y is 1/4 when x is -1 if I did interpret your equation right. Please see that I did.

I believe the equation to be $y=2^{2x}$ . If you meant $y=2^2x$ , please let me know.