MATHEMATICS MIDDLE SCHOOL

A tutor invited 2 students to a study group. Those 2 students each invited2 students to the study group. Then those additional students each invited
2 students to the study group. How many total students are invited to the study group?

Answers

Answer 1
Answer: 26 students are invited to the study group
Answer 2
Answer: I think the answer to this question is 15 or 10 
hope this helps:D

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A gardener has 27 pansies and 36 daisies. he plants an equal number of each type of flower in each row. what is the greatest possible number of pansies in each row?

Answers

I just did this is our math book at school, but what you do is find the GCF of the numbers. So list all there factors. 27=1x27, 3x9, and that's it. 36=1x36, 2x18, 3x12, 4x9, and that's it. So, next you see that highest numbers they both have in common, in this case it is 9. So your answer is, 9 pansies.

Find the value of z

Answers

Answer:

C. 50

Step-by-step explanation:

We are given ΔABC with an altitude BD as shown in the figure.

As it is known that,

'When an altitude is drawn from a right angle of a triangle, then all the three triangles are congruent.'

So, we get that ΔABC ≅ ΔABD ≅ CBD.

Since, the triangles are congruent, their corresponding sides and angles will be congruent.

Moreover, the ratio of the sides will be equal.

So, we get from ΔABC ≅ ΔABD,

(AD)/(AB)=(AB)/(AC)

i.e. AD=(AB* AB)/(AC)

i.e. 18=(30* 30)/(z)

i.e. 18=(900)/(z)

i.e. z=(900)/(18)

i.e. z = 50.

Hence, the value of z is 50.

Question 1 (4 points)Data Set:
8.2, 9.3, 8.5, 8.8, 9.0
What is the mean, median and mode? Make sure to label each answer. Round any
decimals to the tenths place.
Would mean, median or mode be the best measure to describe the data?

Answers

Answer:Mean = 8.7

Median= 8.8

Mode=Nil

Yes, they are the best measure to describe the data.

Step-by-step explanation:

Mean, otherwise known as average= total sum of data set/ number of data set

=45.8/5= 8.76

Median- the mid point data in a given set. We rearranged the data set in an ascending order to get the best measure. Median is 8.8

Mode- the most reoccurring number in a given data. For this data set, however, mode is not applicable as all each data value appears once

Louisa is 152.7 centimeters tall. Her younger sister is 8.42 centimeters shorter than she is. How tall is Louisa's younger sister?

Answers

Answer: 144.28 centimeters

Step-by-step explanation:

The height of Louisa = 152.7 centimeters

The difference in Louisa and her younger sister =  8.42 centimeters

Therefore, the height of her younger sister =152.7-8.42 centimeters

Thus, the height of her younger sister = 144.28 centimeters

Hence, Louisa's younger sister is 144.28 centimeters tall.
152.7-8.42= 144.28
Lousia's younger sister is 144.28cm tall.

40 is 50% of what number?

Answers

Steps:
1. Do a proportion
40/x equals 50/100
2. 40 times 100 equals 4,000
3. Do 4,000 divided by 50 equals 80
4. Your answer is 80

A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she takes a red marble is 1 in 5. Yasmine returns the marble to the bag and adds five more red marbles to the bag. The probability that she takes one red marble at random is now 1 in 3. How many red marbles were originally in the bag?

Answers

There was one red marble because it said that the probability of choosing a red marble is 1/5 so the other marbles are blue. 
Hope this helps. 
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