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Zigmanuir [339]
3 years ago
10

Which expressions are equivalent to 3x + 3(x + y)

Mathematics
1 answer:
iris [78.8K]3 years ago
5 0

Answer:

3(x+x+y) and 6x+3y

Step-by-step explanation:

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Krystal left the hardware store and traveled toward the recycling plant at an average speed of 61 mph. Scott left at the same ti
tiny-mole [99]

Since Krystal and Scott is heading on opposite directions, therefore the distance between the two would be the sum of their distances from where they left, so:

total distance (d) = distance covered by Krystal (dK) + distance covered by Scott (dS)

d = dK + dS

 

We know that the formula for distance is:

distance = velocity * time

 

So,

d = vK * t + vS * t

where

vK = velocity of Krystal = 61 mph

vS = velocity of Scott = 65 mph

d = 252 miles

 

Therefore:

252 = 61 t + 65 t

126 t = 252

t = 2 hours

 

Therefore Scott needs to travel for 2 hours.

4 0
3 years ago
Need help on this loviesss
aev [14]

Step-by-step explanation:

perimeter of triangle = s + s + s

perimeter of given triangle = 22 + 17 + 14

                                             = 53 cm

therefore, perimeter of given triangle is <em>53 cm</em>

7 0
3 years ago
BRAINLIEST AND 100 POINTS. Please help by explaining how you got the answer
spayn [35]

Answer:

it may be A log x ........

4 0
3 years ago
Find the minimum and maximum values for the function with the given domain interval.
AlexFokin [52]

Step-by-step explanation:

e^(x+h) is always larger than e^x.

so the minimum function value in that interval is e⁴.

and the maximum function value in that interval is e⁶.

e⁴ = 54.59815003... ≈ 54.60

e⁶ = 403.4287935... ≈ 403.43

8 0
2 years ago
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is
Scorpion4ik [409]

Answer:

  • 26 ounces of 55% solution
  • 104 ounces of 80% solution

Step-by-step explanation:

Let x represent the quantity of 80% solution. Then 130-x is the amount of 55% solution. The total amount of salt in the mix is ...

  0.80x +0.55(130 -x) = 0.75·130

  0.25x = 0.20·130 . . . . . . . subtract 0.55(130)

  x = 0.20/0.25(130) = 104

  130-x = 26

She should use 26 ounces of 55% solution and 104 ounces of 80% solution.

5 0
3 years ago
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