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2 years ago

26. Simplify the expression below completely. 4(5w - 3) -(w - 1) Please help me!!

Mathematics

2 answers:

Igoryamba2 years ago

5 0

Answer:

19w-11

Step-by-step explanation:

4 times 5w is 20w and -3 times 4 is -12 and you multiply the - to w-1 which gives you -w+1. You will then get 20w-12-w+1 and you add -w and +20w which gets you 19w and you add -12 and +1 which gets you -11 so the answer would be 19w-11.

Hope this helps!

Veseljchak [2.6K]2 years ago

4 0

4(5w-3) -(w-1)
(9w-12)-(w-1)
8w-11

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2 years ago

If EF = 5w + 20, FG = 7w + 28, and EG = 72, find the value of w. Find EF and FG

IrinaK [193]

Answer:

w = 2, EF = 30 , FG = 42

Explanation:

We have EF = 5w + 20 and FG = 7w + 28

Since these points E, F and G are col-linear points we have.

EG = EF + FG

And given that EG = 72

So, EF+EG = 72

5w + 20 + 7w + 28 = 72

12w + 48 = 72

12 w = 24

w = 2

So EF = 5w + 20 = 5x2 + 20 = 30

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2 years ago

Sandra normally takes 2 hours to drive from her house to her grandparents' house driving her usual speed. However, on one partic

Rudiy27

Answer:

Her usual driving speed is 38 miles per hour.

Step-by-step explanation:

We know that:

$s = \frac{d}{t}$

In which s is the speed, in miles per hour, d is the distance, in miles, and t is the time, in hours.

We have that:

At speed s, she takes two hours to drive. So

$s = \frac{d}{2}$

$d = 2s$

However, on one particular trip, after 40% of the drive, she had to reduce her speed by 30 miles per hour, driving at this slower speed for the rest of the trip. This particular trip took her 228 minutes.

228 minutes is 3.8 hours. So

$0.4s + 0.6(s - 30) = \frac{d}{3.8}$