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miskamm [114]
3 years ago
7

Consider Frank's math test scores for the semester. Find the interquartile range of the scores.

Mathematics
1 answer:
musickatia [10]3 years ago
4 0
Okay so you put the numbers in order:
70, 74, 81, 82, 83, 91, 94.

Then you find the median which will be Q2:
82.

Once you have the total median, you find the midpoint of the first and last part:
70, 74, 81. Midpoint/Q1=74
83, 91, 94. Midpoint/Q3=91

Now that you have that, you subtract Q3 and Q1.
91-74=17

17 is your IQR.
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A soccer club spent $97.50 on trophies from a custom trophy company. The cost of manufacturing x custom trophies is $18.50 for t
Tomtit [17]
They bought 5 trophies total

1st trophy cost $37.50
($18.50+$12.50+$4+$2.50=$37.50)
Each additional trophy cost $15
($12.50+$2.50=$15)

They spent $97.50 total
$97.50-$37.50=$60
Additional trophies $15
$15*X=$60
4 trophies=$60+$37.50 for 1st trophy
$60+$37.50=$97.50


6 0
3 years ago
Solve for y, z, x or t:
Andrews [41]

Problem 1

y + (y/a) = b

a*( y + (y/a) ) = a*b ... multiply both sides by 'a'

ay + a(y/a) = ab ... distribute

ay + y = ab

(a+1)y = ab .... factor

y(a+1) = ab

y = ab/(a+1) ... divide both sides by (a+1)

<h3>Answer: y = ab/(a+1)</h3>

========================================

Problem 2

z - a = z/b

b(z - a) = b(z/b) .... multiply both sides by b

b(z - a) = z

bz - ab = z ... distribute

bz - ab+ab = z+ab ... add ab to both sides

bz = z+ab

bz-z = z+ab-z ... subtract z from both sides

bz-z = ab

z(b-1) = ab .... factor

z = ab/(b-1) .... divide both sides by (b-1)

<h3>Answer: z = ab/(b-1) </h3>

========================================

Notes:

To clear out the fractions, I multiplied both sides by the denominator value.

The restriction that 'a' cannot equal -1, back in problem 1, is to avoid having the denominator (a+1) be equal to zero. We cannot divide by zero. A similar situation happens with problem 2 as well.

4 0
3 years ago
Find the missing side or angle.<br> Round to the nearest tenth.
statuscvo [17]
Cosine law
a^2 = b^2 + c^2 - 2(b)(c)cosA
a^2 = 2^2 + 4^2 - 2(2)(4)cos78
a = 4.08
a = 4.1
3 0
3 years ago
Read 2 more answers
In parallelogram QRST if m∡TQR=50∘ find m∡STQ.
azamat
The STQ is obtuse i think that’s it?
7 0
3 years ago
Question
Fantom [35]

Answer:

a. More than one pie

Step-by-step explanation:

2/3 + 3/4

8/12 + 9/12 = 17/12

17/12 = 1 5/12

3 0
3 years ago
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