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satela [25.4K]
3 years ago
14

15=-3(2c+3d)solve for c​

Mathematics
1 answer:
Korolek [52]3 years ago
6 0

Answer:c=(-15-9d)/6

Step-by-step explanation:

15=-3(2c+3d)

Open brackets

15=-6c-9d

Add 9d to both sides

15+9d=-6c-9d+9d

15+9d=-6c

Divide both sides by -6

(15+9d)/-6=-6c/-6

-(15+9d)/6=c

c=-(15+9d)/6

c=(-15-9d)/6

You might be interested in
Does (99, -16) make the equation y = 3x – -51 true?<br>ayes​
RUDIKE [14]

Answer:

No this is not a solution

Step-by-step explanation:

Substitute the points in and see if the equation is true

-16 = 3(99) - -51

-16  = 297+51

-16 =348

False, so this is not a solution

3 0
3 years ago
"The Celluloid Cinema sold 150 tickets to a movoe. Some of these were child tickets and the rest were adult tickets. A child tic
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

Let c represent the number of child tickets that were sold.

Let a represent the number of adult tickets that were sold.

The Celluloid Cinema sold 150 tickets to a movie. This means that

a + c = 150

A child ticket cost $7.75 and an adult ticket cost $10.25. If the cinema sold $1470 worth of tickets, it means that

10.25a + 7.75c = 1470

Therefore, the system of equations that could be used to determine how many adult tickets, a, and how many child tickets c were sold is

1) a + c = 150

10.25a + 7.75c = 1470

Option 2 is incorrect because a + c is not equal to 1470

Option 3 is incorrect because rate of child and adult tickets were interchanged.

Option 4 is incorrect because a + c is not equal to 1470 and the rate of child and adult tickets were interchanged.

7 0
3 years ago
Please help! I will give brainliest. Please make sure to explain!!
AysviL [449]

Answer:

a. The general trend would be skewed <em>left</em>.

b. The median is 3.

c. The mean is 3.3.

d. The mean would be affected more.

Step-by-step explanation:

a. The value of this graph is shown as left, and since the graph gets bigger the farther right you go, it would be skewed more to the left.

b. 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 5, 6, 7

(cross off all of the numbers except the one in the middle)

c.1+1+2+2+2+3+3+3+4+4+5+6+7=43/13(or in other words, how many values they are)=3.307...=3.3

d. If a 15 was added to this value, the median would still be 3, but the mean would push the sum of all values to 58, and, when divided by 14, it would be around 4.1.

6 0
4 years ago
I need to know 7 divided by 4/5 =
Basile [38]

Answer:

8.75 or 8 3/4

Step-by-step explanation:7

   

The numbers in 7 divided by 4/5 are labeled below:

7 = whole number

4 = numerator

5 = denominator

To make it a fraction form answer, you multiply the whole number by the denominator and make the result the new numerator. The old numerator becomes the new denominator:

7 x 5

4

 =    

35

4

Thus, the answer to 7 divided by 4/5 in fraction form is:

35

4

To make the answer to 7 divided by 4/5 in decimal form, you simply divide the numerator by the denominator from the fraction answer above:

35 / 4 = 8.75

The answer is rounded to the nearest two decimal points if necessary.

35/4 is an improper fraction and should be written as 8 3/4.

3 0
3 years ago
In 2011, the population of mail was about 1.584 x 10^3 people. What is this number written in standard notation
frutty [35]

Answer:

1584

Step-by-step explanation:

1.584 x 1000 = 1584

8 0
3 years ago
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