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Lady_Fox [76]
3 years ago
6

Jerry and Stella are working on an art project together. Jerry has 18 more markers than Stella.

Mathematics
1 answer:
Inessa [10]3 years ago
6 0

Stella has 40 markers.

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Solve the proportion x/18=7/21​
Crank

Answer:

x=6

Step-by-step explanation:

4 0
3 years ago
The mathematics department of a college has 15 male professors, 9 female professors, 6 male teaching assistants, and 12 female t
Vesnalui [34]

Given:

The number of male professors = 15.

The number of female professors = 9.

The number of male teaching assistants = 6.

The number of female teaching assistants = 12.

A person is selected randomly from the group.

Required:

We need to find the probability that the selected person is a professor or a male.

Explanation:

The total number of people in the group = 15+9+6+12 = 42

n(S) =The total number of people in the group

n(S)=42

Let A be the event that the selected person is a professor or a male.

The number of people who are professors or male = 15+9+6 = 30

n(A)= The number of people who are professors or male.

n(A)=30

Let P(A) be the probability that the selected person is a professor or a male.

P(A)=\frac{n(A)}{n(S)}P(A)=\frac{30}{42}P(A)=\frac{15}{21}=\frac{5}{7}

Final answer:

The probability that the selected person is a professor or a male is 5/7.

7 0
2 years ago
Can someone help me with this problem? I dont really understand it.
Allushta [10]
OH I KNOW I KNOW TEACHER. its its wait im in middle school what the heck am i doing in here.
4 0
3 years ago
 Van purchased a DVD player on sale. The original selling price was ​$175.80. The sale price was ​$149.42. What is the first ste
rjkz [21]

Answer:

The percent decrease was 15%

Step-by-step explanation:

In order to find this, use the percent change equation.  

(New - Old)/(Old) * 100 = % Change

Now input 149.42 for the New price and 175.80 for the Old price.  

(149.42 - 175.80)/(175.80) * 100 = % Change

-26.38/175.80 * 100 = % Change

-.15 * 100 = % Change

-15 = % Change

5 0
4 years ago
How do I do number 4​
nikitadnepr [17]

Answer:

its 6.40

Step-by-step explanation:

you have to use the distance formula which is

d=\sqrt(x2-x1)^{2}  + (y2-y1)^2

so points C is (-5,-1) and D is (0,3)

then you substitute the x

0--5=5^2

then

3--1+4^2=16

25+16=41

then square rout that and it equals 6.40

7 0
3 years ago
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