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zepelin [54]
3 years ago
6

Students in Ms. Singh's class had the following scores on their last quiz.

Mathematics
1 answer:
Svetllana [295]3 years ago
8 0
the median of her 20 students is 82.5
You might be interested in
CO
8090 [49]

Answer:

A( multiply both sides by 6)

As seen , the L.C.M is 6 so to do away with the fractional form, we will multiply by 6

5 0
3 years ago
6xy (1/2x ^2 - 1/2xy + 1/2y ^2 )
nevsk [136]
Is this correct on what you typed above -> \bf 6xy\left( \cfrac{1}{2x^2}-\cfrac{1}{2xy}+\cfrac{1}{2y^2} \right) ?
6 0
3 years ago
3. A medical devices company wants to know the number of MRI machines needed per day. A previous study found a standard deviatio
lozanna [386]

Answer:

173 MRI machines

Step-by-step explanation:

Margin of error E = 0.5

Confidence interval 90% = 1-0.9 = 0.1

Standard deviation = 4 hours

Number of MRI machines needed per day n, = [(z alpha/2 * SD)/E]²

Z alpha/2 = 1.645 at alpha = 0.1

Inputting these values into n we have that

[(1.645*4)/0.5]²

= 13.16²

= 173.18 is approximately equal to 173

The company has to study 173 machines.

6 0
4 years ago
Square with side 4 is dilated by 7
Kazeer [188]

Answer:

196 in/cm/m²

Step-by-step explanation:

Given that the scale factor is a : b , then the area factor is a² : b² Here the scale factor is 1 : 7 , thus area scale factor is 1² : 7² = 1 : 49 That is the area of the dilated square is 49 times the original square. area of dilated square = 4 × 49 = 196 in/cm/m²

5 0
3 years ago
The function fx) x2 +5x- 6 is shifted 4 units to the left to create g(x). What is g(x)?
vesna_86 [32]
The answer is g(x) = x^2 + 13x + 30

You can get this is multiple ways. Firstly, you could factor to find the zeroes and then move the answers to the left and redistribute the parenthesis. 

You could also put the equation into vertex form and shift the number inside the parenthesis by 4. 

Either will give you the exact same answer. 
4 0
4 years ago
Read 2 more answers
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