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MaRussiya [10]
3 years ago
9

Equivalent of -3(5+x)+4x

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
5 0

Answer:

-15 + x

Step-by-step explanation:

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Jack drove to work in the morning at an average speed of 45 miles per hour. He returned home in the evening along the same route
Dmitry [639]

Answer:

Step-by-step explanation:

Let's say that the time it took him to get to work in the morning is  t hours. Then the time it took him to get home in the afternoon must be 1 - t hours. We know that for any trip, distance equals rate times time or d = rt . That means that the distance he drove to work is given by , but we also know that the distance he drove to get home must be the same distance, because he took the same route (and, presumably, no one picked up him house and moved it while he was at work) so for the trip home we can say  d = 30 × (1 - t) and since the distances are equal, we can say: 

45t = 30 × (1 - t)

45t = 30 - 30t

45t + 30t = 30

75t = 30

t = 30/75

t = 2 /5 hour to drive to work at 45mph

Since ,  d = rt

d = 45 ×(2/5) = 18miles

8 0
3 years ago
A straight line is drawn through the intersection of the two diagonals of a parallelogram. Prove that it exactly divides the par
zubka84 [21]

Answer:

I dont understand btw thanx for the points

Step-by-step explanation:

3 0
3 years ago
Write the expression in correct forma<br><br>13n² -6n⁴ + 2n -5n³ + 3<br>​
m_a_m_a [10]

Answer:

-6n^4 -5n^3 +13n^2 +2n +3

organize the exponents from higher to lower.

4 0
2 years ago
How to turn 1.15 as a decimal into a percentage
Valentin [98]
Multiply the number by 100, making this one 115%
6 0
3 years ago
A dilation produces a smaller figure. Which is a possible scale factor? –2 One-third 1 4
Ghella [55]

Answer:

1/3 (one-third)

Step-by-step explanation:

A scale factor that produces an image <u>smaller</u> than the original figure is <u>less</u> than 1. A scale factor that produces an image <u>bigger</u> than the original figure is <u>more</u> than 1.

Thus, the only option that's less than 1 is one-third.

4 0
2 years ago
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