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allsm [11]
3 years ago
6

5 times the sum of 12 and a number is 80 What is the value of the unknown number

Mathematics
1 answer:
kirill115 [55]3 years ago
3 0

Answer:

4

Step-by-step explanation:

5(12+x)=80          Create equation. x is the unknown number.

60+5x=80           Distributive property.

5x=20                  Isolate variable.

x=4                       Divide on both sides by the coefficient.

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A and B are two similar shapes the area of shape A is 200cm2 calculate the area of shape B
barxatty [35]

Answer:

Area of shape B = 312.5 cm²

Step-by-step explanation:

Ratio of Area of A : Area of B = 12² : 15²

Given that area of A is 200 cm², let the area of shape B = x

Therefore:

200:x = 12²:15²

200/x = 144/225

Cross multiply

144x = 200*225

144x = 45,000

x = 45,000/144

x = 312.5 cm²

Area of shape B = 312.5 cm²

5 0
2 years ago
Given that x= -3, what is the value of 2ײ - x + 5?​
Roman55 [17]

Answer:

26

Step-by-step explanation:

2(9)-(-3)+5

2(9)+3+5

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26

3 0
3 years ago
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Given a data set consisting of 33 unique whole number observations, its five-number summary is:
Lemur [1.5K]

Answer:

given a data set of 33 unique whole number observation,its five number sumary is [16, 29, 40 ,54, 67]

Step-by-step explanation:

The p-th percentile in an ordered (from low to high) data set is a value such that p% of the data is less than that value. The quartiles of a data set are the 25th, 50th and 75th percentiles. (The 25th percentile is usually called the first quartile, the 50th percentile is usually called the median, and the 75th percentile is usually called the third quartile.)

The formula for finding the location (or position) of the (approximate) pth percentile in an ordered (from low to high) data set is  

L p=(n+1).p/100

For example, in the data set  [2,4,6,8,10,12,14,16,18]

the (approximate) 60th percentile is located at position  

L 60=(9+1).60/100=6

that is, the sixth data point (the value 12) is at the (approximate) 60th percentile.(Actually, only 55.6% of the data is below a 12.)

3 0
2 years ago
Hepl me what is the answer to this math question
Luda [366]

Answer:

c

Step-by-step explanation:

6 0
3 years ago
A group of 6 students was asked, "How many hours did you watch television last week?" Here are their responses:
vaieri [72.5K]

Answer:

Mean: 11.2

Median: 11

Mode: There is none

Step-by-step explanation:

mean -you add all the numbers and divide by the number of numbers

median- you arrange the data set by numerical value (increasing) and it is basically the "middle number" for example 1, 2, 3, (2 would be the "middle" number" )

mode- is the number that appears most often. in this scenario, all numbers appear the same amount of times (1) so there is no mode.

3 0
2 years ago
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