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zloy xaker [14]
3 years ago
14

Linda is one of 8 teachers in the Mathematics department. In how many different ways can three of the teachers be chosen so that

Linda is one of the chosen teachers?
Mathematics
1 answer:
Alexxx [7]3 years ago
4 0

Answer:

21 ways

Step-by-step explanation:

a, b, c, d, e, f, g, linda

1    2   linda  

a__ b__ __

a__c __ __

a__d __ __

a__ e__ __

a__ f__ __

a__ g__ __

b__c __ __

b__d __ __

b__ e__ __

b__ f__ __

b__ g__ __

c__d __ __

c__ e__ __

c__ f__ __

c__ g__ __

d__ e__ __

d__ f__ __

d__ g__ __

e__ f__ __

e__ g__ __

f__ g__ __

count them

in total

there are

21 triples

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Solve the equation using factoring polynomials. (z+5)2z
Mkey [24]
(x + 5)²z
(x + 5)(x+ 5)z
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(x² + 10x + 25)z
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6 0
3 years ago
The 7th grade has 220 tudents. There are 3/5 girls. How many boys are there in 7th grade
Helga [31]

Answer:

88

Step-by-step explanation:

Let's see - if there are 3/5 girls, there must be 2/5 boys. Assuming everyone in the class is binary, of course.

So 2/5 of 220 is the number of boys. When you see "of," always think multiplication!

2/5 of 220

2/5 * 220 = 88 boys in 7th grade

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3 years ago
9. Marvin Gate bought some fencing from a wholesaler for $6,000. The wholesaler offered a trade discount of 35%. What was the or
Volgvan

Answer:

B - %9230.77

Step-by-step explanation:

7 0
3 years ago
Help me with this...-36h = 162
Anna35 [415]
H=-9/2
Divide both sides of the equation by -36
Any expression divided by itself equals 1
8 0
3 years ago
Solve the following system:
prisoha [69]

Answer:

Read explanation

Step-by-step explanation:

Use elimination

Add them all up

y = 1 ( everything else cancels )

-2x + 2(1) + z = 14

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-x +(1) - 2z = -8

simplify

-2x + z = 12

3x + z = -3

-x -2z = -9

U can't use elimation because it would turn into 0 = 0

change last equation

x + 2z = 9

x = -2z + 9

plug that in

-2(-2z+9) + z = 12

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simplify

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z = 6

y = 1

x = -3

3 0
3 years ago
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