What is the least common denominator for the fractions below? (Round the answer to the nearest integer)
1/2, 2/3, 4/5
30
25
7
19
Correct Answer : A
We determine least common denominator (LCD) using prime factorization of denominators as follows
2=1*2
3=1*3
5=1*5
Thus, LCD of 2, 3, 5 = 2*3*5=30
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Correct Answer is D
Explanation
The most likely weight of pencil is 25 g, because a pencil is a lighter object which is measured in grams.
Correct Answer is B
Explanation
Organize the date set from the smallest to the largest as:
-3, -2, 0, 5, 10
Median means one that is at the middle, and from the above-given data set, 0 falls at the middle.
Correct Answer is C
Explanation
From the given equation, the variable t is varied to obtain the value of f(t). This means that t is an independent variable, modified variable while f(t) is a dependent variable, a measured value.
Correct Answer is A
Explanation
Yoghurt: toppings=4:3
Yoghurt: 4.5 oz =4:3
We convert the given ratio into a proportion equation as below
Multiply both sides by 4.5 oz
Correct Answer is C
Explanation
Given:
- Original price of the recliner: P
- Sale price (30% less than the original price): 0.7P
- Coupon saves an additional 25% off the sale price: 0.75 *0.7P = 0.525P
- The consumer pays $237 for the recliner.
We set up the equation:
0.525P = 237
Now, let's solve for P:
P = 237 / 0.525}
P = 451.428
Rounded to the nearest dollar, the original price of the recliner is approximately 451dollars.
Correct Answer is B
Explanation
First convert 31% to a decimal before working on the problem
31%=31/100=0.31
Thus, 31% of 426=0.31*426=132.06
Correct Answer is B
Explanation
100% represents total students four allied health program. Thus, 100%=800 students, and 19% joins respiratory care program is
Thus, 152 students joined the respiratory care program.
Correct Answer is A
Explanation
Let width of the rectangle be W. We are told that length, L is 3 units greater than width. Then,
L=W+3
And perimeter of the rectangle is given by the relation, P=2(L+W]=2L+2W
In place of L substitute W+3. Thus,
P=2[W+3]+2W
Correct Answer is C
Explanation
To solve this problem, we need to find the mean, mode, and median of the above data set.
From the data set, the mode of the data is 2 and 8. They are the most occurring elements in the data set.
The mean of data is the total divided by the number of elements
Total=1+ 1 + 2+ 2+ 2+ 2+ 3 +3+ 7+ 7+8+8+ 8+ 8+ 9+9=80
Number of elements=16
Mean=80/16=5
Median will fall in between the (N/2)th and (N/2+1)th position
(N/2)th =16/2 =8th position and (16/2+1)th =9th position
Since the data is arranged in ascending order as below
1, 1, 2, 2, 2, 2, 3, 3, 7, 7, 8, 8, 8, 8, 9, 9
Element in 8th position = 3
Element in 9th position =7
So the median average of the two elements=(3+7)/2=5
Now the data could be presented as follows in the distribution curve
This is because the data set has two modes, meaning the data is bimodal.
Correct Answer is A
Explanation
To find a solution to this, we need to find the change in spending between the year 2013 and 2015 for each country. Change is difference in amount spent in 2015 and 2013 for each country:
Sudan=$(24-17)= $7
Eritrea=$(42-56)= - $14
Nigeria = $(21-16)= $5
Tanzania =$(81-68) = $13
Rwanda = $(24-27) =-$3
Kenya = $(88-81) = $8
A Minus sign means a decrease in spending. From the above calculations, Eritrea had the GREATEST change in dollars spent while Rwanda had the LEAST change in dollars spent.
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