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stellarik [79]
3 years ago
9

The distance d traveled by a train varies directly as the time t that it travels. The train travels 60 km in 1/2 hr. How far wil

l it travel in 2 hr?
Mathematics
1 answer:
wel3 years ago
3 0

Answer:

I will probably travel around

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A scale drawing has a scale of 2 cm :21 km. find the actual length for a drawing length of 4.5 cm
djverab [1.8K]
The correct answer is C! Because 21/2 = 10.5 and 10.5 x 4.5 = 47.25
7 0
3 years ago
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What is its first derivative
agasfer [191]

Answer:

2ax + b + C

where C is a constant.

4 0
2 years ago
Adult tickets to a basketball game cost $5. Student tickets cost $1. A total of $3,169 was collected on the sale of 1,325 ticket
eimsori [14]

Answer:

461 adults and 864 students

Step-by-step explanation:

We can set-up a system of equations to find the number of adults. We know students and adults attended. We will let s be the number of students and a be the number of adults. Since 1,325 tickets were purchased, then s+a=1325.

We also know that a total of $3,169 was collected and adult tickets cost $5 each and students cost $1 each. We can write 1s+5a=3169.

We will solve by substituting one equation into the other. We first solve the first equation for s which is s=1325-a. Substitute s=1325-a into 1s+5a=3169. Simplify and isolate the variable a.

1(1325-a)+5a=3169

1325-a+5a=3169

1325+4a=3169

1325-1325+4a=3169-1325

4a=1844

a=461

This means that 461 adults attended and 864 students attended since 864+461=1325.

8 0
3 years ago
Which of the following is the measure of ÐQRS? A. 115° B. 90° C. 100° D. 80°
choli [55]
<span>Unless you are talking about the triangle thing, then its 90°.</span>
8 0
3 years ago
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There is a bag filled with 4 blue, 3 red and 5 green marbles.
bearhunter [10]

Answer:

1/11

Step-by-step explanation

There are 12 marbles in the bag. When we first pick we have 4 blue marbles. So 4 blue marbles/12 random marbles. When we pick blue and noted, there are 3 marbles in the bag because of we didn't put it back. So when we choose again there are 11 marbles and 3 blue marbles in the bag. Choosing a blue one case is 3/11.

The last part of this case is happening as a chain. So we need to multiply our two answers.

=4/12*3/11

=1/3*3/11

=1/11

7 0
2 years ago
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