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Nastasia [14]
3 years ago
10

Can someone please respond to me and help me out with these 4 problems I must show my work and include an expression , evaluatio

n and label for my answers or I won’t get full credit 20-22 questions 17-19 I just include an equation, answer and label for each question

Mathematics
1 answer:
AlladinOne [14]3 years ago
4 0

Answer: A train traveled486 miles in 7 hours

They would be going at least 40 - 70

Step-by-step explanation:

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I need help with probability! Answer numbers 54-67 please. And show work. Thanks!
Korolek [52]
Girl, You got to try! c'mon really?

5 0
4 years ago
Sadie the dog is sitting on the roof of his doghouse, 4.5 ft off the ground. He is watching a cat that is 16 ft away from the ba
nignag [31]
In word problems on topics of trigonometry, the terms of angle of depression and angle of elevation are very common. The angle of depression is used when the observer is above the point of reference. The angle made from the observer to the object is the angle of depression. To understand more clearly, refer to the attached picture.

Suppose the dog is on the top vertex of the triangle while the cat is the rightmost corner of the triangle. The angle denoted as x° is the angle of depression. To determine this, we use the tangent function. The tangent of an angle is the ratio of its opposite side to its adjacent side. 

tanx° = 16/4.5
x = 74.29°

8 0
3 years ago
a set of data contains four values. the mode is 5, the range is 3 and the median is 5. the smallest value in the data set is 4.
Zielflug [23.3K]

Answer:

Step-by-step explanation:

The smallest is 4 and since there has to be two fives, the two middle numbers are 5. The range 3 so that means the biggest number is 7. So the set is 4,5,5,7

5 0
3 years ago
Read 2 more answers
A school administrator bought 6 desk sets. Each set consists of one table and one chair. He paid $48.50 for each chair. If he pa
Marrrta [24]

Answer:

b. $62

Step-by-step explanation:

First, we need to add up the cost of all the chairs.

48.5 x 6 = 291

All the chairs together cost $291

Now we can take out the cost of the chairs from the total.

663 - 291 = 372

$372 is what's left over for the cost of all the tables together. So we are going to divide by the number of tables to find out how much each table costs.

372 / 6 = 62

Each table costs $62

7 0
3 years ago
Using the digits 1 to 9 at most one time each, fill in the boxes to find the largest (or smallest) possible values for x.
Mice21 [21]

Answer:

smallest: 8x -3 = 4; 1y +9 = 2. total = -49/8

 largest: 1x -9 = 8; 2y +3 = 7. total = 19

Step-by-step explanation:

If we use variables to represent the box contents, we can write ...

ax -b = c

dy +e = f

Then the values of x and y are ...

 x = (c +b)/a

 y = (f -e)/d

For positive integer values of the variables, x will always be positive, and y may or may not be negative.

Smallest sum

For the sum to be the smallest, we must have x be as small as possible and the ratio (f-e)/d be as negative as possible.

x will be small for large 'a' and for (c+b) small. For y to be as negative as possible, we want 'd' and 'f' small and 'e' large. Best results are obtained for

8x -3 = 4   ⇒   x = 7/8

1y +9 = 2   ⇒   y = -7

For these coefficients, the sum is -6 1/8 = -49/8.

(note that the values of 'b' and 'c' can be swapped with no net effect)

Largest sum

For the sum to be the largest, we must have x as large as possible: (b+c) large and 'a' small. At the same time we must have y be positive and as large as possible: (f-e) positive and large, 'd' small. Best results are obtained for

1x -9 = 8  ⇒   x = 17

2y +3 = 7   ⇒   y = 2

For these coefficients, the sum is 19. Again, 'b' and 'c' can be swapped with no effect.

_____

Additional comment

These extreme values are verified by examination of the 60,480 possible permutations of the coefficients.

8 0
3 years ago
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