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Ivanshal [37]
3 years ago
7

Lizards can eat 45 ants per minute. How long would it take to eat 1,080 ants?

Mathematics
1 answer:
dsp733 years ago
4 0

Answer: 24 minutes!

Step-by-step explanation: As mentioned, it can eat 45 ants per minute, How long would it take to eat 1,080 ants?

It's simple, just divide 1080 by 45 and when you divide it, the answer is 24!

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Add the coefficients 2x + 4x - 8x - 5x *
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2+4-8-5=9

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Add the coefficients

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Some of Mrs. Turay’s eighth graders took the PSAT test. Score totals of ten of her students are below. Calculate the mean and th
den301095 [7]

Answer:

(a) Mean=74

(b) Median=70

(c) The best measure of center= Median.

Step-by-step explanation:

We have been given a data set of PSAT scores of Mrs. Turay's eight graders. We are asked to find mean and median of the given data set.

(a) Let us find mean of data set by dividing the sum of given scores by the number of students.

\text{Mean}=\frac{60+62+67+69+70+70+71+75+76+120}{10}

\text{Mean}=\frac{740}{10}=74

Therefore, the mean test score will be 74.

(b) Now let us find median of our given data set. We have been given that number of students is 10, therefore, our median will be the average of 5th and 6th term.

60, 62, 67, 69, 70, 70, 71, 75, 76, 120.

We can see that 5th term is 70 and 6th term is 70 as well.

\text{Median}=\frac{70+70}{2}

\text{Median}=\frac{140}{2}

\text{Median}=70

Therefore, the median test scores will be 70.

(c) We can see that our data set has an outlier score as 120, which has increased the mean. Mean score is greater than median score. Since median is not affected by extreme value outliers, therefore, median will be the best measure of center for given test scores.    


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3 years ago
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Prove that 1/2 + 1/3 + ... + 1/n is not an integer
andre [41]
Ddddddddddddddddddddddddddddddddddddddddddddddddddddddddd
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2 years ago
Find the equation of the line that passes through (1,2) and is perpendicular to
uysha [10]

Answer:

Remember that the slope of perpendicular lines are negative reciprocals of each other.

Step-by-step explanation:

y = 1 - 2x     the slope is -2     the value of the x term.

So the slope of the new line using point (- 1, 2)  is  1/2.

Now use y = mx + b where y = -1, x = 2, and m = 1/2 .

y = mx + b

-1 = 1/2(2) + b                solve for "b", the y-intersect

-1 =  1 + b

-2 = b

The line that is perpendicular to y = 1 - 2x  is  y = 1/2x - 2

3 0
2 years ago
PLEASE HELP!! WILL MARK BRAINLIEST AND THANK YOU!!! IM DESPERATE!!
serious [3.7K]

Answer:

<h2>693 m²</h2>

Step-by-step explanation:

This is a parallelogram.

The formula of an area of a parallelogram:

A=bh

<em>b</em><em> - base</em>

<em>h</em><em> - height</em>

From the graph we have <em>b = 21m</em> and <em>h = 33m</em>.

Substitute:

A=(21)(33)=693\ m^3

3 0
3 years ago
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