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rosijanka [135]
3 years ago
7

Use the equation d = k + 4 to find the value of d when k = 10.

Mathematics
2 answers:
JulijaS [17]3 years ago
7 0

Answer:

d=14

Step-by-step explanation:

d=10+4

d=14

kari74 [83]3 years ago
6 0

when k= 10

d = 10 + 4 = 14

that is the value for d

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Two buses leave a station at the same time and travel in opposite directions. One bus travels
natima [27]

Answer:

63 miles per hour

54 miles per hour

Step-by-step explanation:

Let the two buses be represented as bus A and bus B.

bus A and bus B leave a station at the same time and travel in opposite directions.

Let the speed of bus A be A miles per hour.

Let the speed of bus B be B miles per hour.

One bus travels 9 miles/hour slower than the other.

Let bus A be the faster bus.

This means that the speed of bus B is B = A - 9

If the two buses are 585 miles apart after 5hours, this means that after 5hours, the total distance travelled by bus A and bus B is 585 miles.

Distance travelled by bus A in 5 hours = speed × time = 5A

Distance travelled by bus B in 5 hours = speed × time = 5B

5A + 5B = 585 - - - - - -1

Substituting B = A - 9 in equation 1

5A + 5(A - 9) = 585

5A + 5A - 45 = 585

10A = 585 + 45 = 630

A = 630/10 = 63 miles per hour

B = A - 9 = 63 - 9 = 54 miles per hour

4 0
3 years ago
. 3. Which of these ordered pairs is a solution to the linear inequality y – 4x ≤ –6? . . (Points : 1). A) (–2, 4). B) (1, –2).
Vikki [24]
We may answer the question above by substituting the values of the coordinates of the points in the choices to the x and y of the inequality. 
A. (-2, 4)     4 - 4(-2) ≤ -6     12 ≤ -6   FALSE
B. (1, -2)     -2 - 4(1<span>) ≤ -6      -6 ≤ -6   TRUE
C (1, 3)        3</span> - 4(1<span>) ≤ -6      -1 ≤ -6   FALSE
D. (2, 3)       3</span> - 4(2<span>) ≤ -6      -5 ≤ -6   FALSE

The answer would be letter B. </span>
7 0
3 years ago
#1.) Which of the numbers below belong to the solution x-4≥5?
jekas [21]
The answer is C 
9 - 4 = 5
5 is equal to 5

13 - 4 = 9
9 is greater than 5

The symbol means greater than or equal to 
6 0
3 years ago
A science teacher gives a test with 15 questions. This teacher is a hard grader. The teacher assigns points in the following man
ASHA 777 [7]

Answer:  The standard deviation was calculated incorrectly.

Step-by-step explanation:

  • The standard deviation measures the dispersion of the data values from the mean value.

It cannot be negative , because it is the square root of the variance .

We add all squared deviations from the data points away from the mean and (then divide it by the number of data values) to evaluate variance.

Since , any squared number cannot give a negative result.

⇒ Standard deviation cannot be negative.

⇒The standard deviation was calculated incorrectly.

Rest other things (given in options) can not be interpreted on the basis of given information.

6 0
3 years ago
How many times as much does each item cost in 2010 as in 1960 is the movie tix it tickets in 1960 costed $.75 in in 2010 cost 9.
Harrizon [31]
13 times i think
You just divide 9.75 by .75 and you get 13
8 0
3 years ago
Read 2 more answers
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