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umka21 [38]
3 years ago
13

Please help don’t understand

Mathematics
1 answer:
TEA [102]3 years ago
8 0

Answer:

3b+9n-8

Step-by-step explanation:

Combine like terms:

7b+8n-4b-8+n=3b+8n-8+n

Combine like terms:

3b+8n-8+n=3b+9n-8

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Mr. smith has 5 courses he teaches at the community college. his course a has 102 students with an average tardiness of 3 studen
Furkat [3]

The percentage of tardiness among the 102 pupils is 2.94.

<h2>Calculation of the percentage</h2>

According to the query,

Course A: Total number of students = 102

                   Number of tardy students = 3

Percent of students tardy in course A = (number of tardy students/total  

                                                                   number of students) * 100

  =(3/102)*100

  = 2.941

  ≈2.94

In case of course B: Total number of students = 85 & tardy student = 5

So, the percent of tardy student = (5/85)*100 = 5.88 %

Therefore, it is concluded that the percentage of student tardiness in course A is 2.94.

Learn more about the percentage here:

brainly.com/question/92258

#SPJ4

5 0
2 years ago
I need geometry help please.
irina1246 [14]

Lets remember the property "alternative-interior angles" when we have parallels lines:

Given two paralles lines, the following is true:

In our question, we have:

We know that the angles J + P + K=180

So, the triangles have all the angles the same, so they are similar by angle-angle-angle, and they have one side congruent, AC=CD, so the triangles are congruents.

6 0
1 year ago
The leg of the isosceles triangle is two less than three times the length of its base. If the perimeter of the triangle is 45 m,
choli [55]

Answer:

19 m

Step-by-step explanation:

base=x

leg=3x-2

3x-2+3x-2+x=45

7x-4=45

7x=49

x=7

leg=3x+2=3(7)-2=19

7 0
2 years ago
Solve 4x + 8y = 16 for x.
leonid [27]
I got x = 4-2y

4x+8y=16
-8y=-8y

4x=16-8y
— ——-
4 4

x=4-2y
8 0
3 years ago
Read 2 more answers
what is the answer please help me
kenny6666 [7]
I can’t see the entire question, but i’m going to go out on a limb and say it’s divide, y-value, x-value
3 0
3 years ago
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