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Flura [38]
4 years ago
13

A stone wall is a total of 6 feet high. Only 4 of the wall is above ground what part is underground

Mathematics
2 answers:
Digiron [165]4 years ago
5 0

2 is underground

hope this helps

notsponge [240]4 years ago
4 0
2 is underground.....
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Yosef typed a 36-word paragraph in 23 minute. What is his typing speed, in words per minute? Solve the problem and describe in w
alexandr1967 [171]

Answer:

36/23

Step-by-step explanation:

speed of typing = words typed/minutes

=36/23

7 0
3 years ago
Write 286,200 in scientific notation.
Paul [167]

Answer:

2.862*10^5

Step-by-step explanation:

First, move the decimal place until you have a number between 1 and 10. If you keep moving the decimal point to the right in 286200 you will get 2.862.

next, since you moved the decimal place to the left 5 times, the xoonent would be a positive 5.

Therefore, the answer is 2.862*10^5

7 0
4 years ago
Calculate the average rate of change for the function f(x) = x4 + 3x3 − 5x2 + 2x − 2, from x = −1 to x = 1
Reptile [31]
Average rate of change over the interval <span><span>[a,b]</span> </span> for <span><span>y=<span>f<span>(x)</span></span></span> </span> is given by <span><span><span><span>f<span>(b)</span></span>−<span>f<span>(a)</span></span></span><span>b−a</span></span> </span>

Hence, average rate of change of from <span><span>x=−2</span> </span> to <span><span>x=6</span> </span> i.e. over the interval <span><span>[−2,6]</span> </span> for <span><span>y=<span>f<span>(x)</span></span>=<span>12</span><span>x2</span></span> </span> is given<span><span> rate of change=<span><span><span>f<span>(6)</span></span>−<span>f<span>(−2)</span></span></span><span>6−<span>(−2)</span></span></span></span> </span>

As <span><span><span>f<span>(−2)</span></span>=<span>12</span><span><span>(−2)</span>2</span>=2</span> </span> and <span><span><span>f<span>(6)</span></span>=<span>12</span><span><span>(6)</span>2</span>=</span> </span><span>rate of change=<span><span>18−2</span>8</span>=<span>162</span>=<span>2</span></span>

3 0
3 years ago
Spinner A and Spinner B have 4 color choices each: grey, orange, blue and yellow. What is the probability of getting a Blue and
grandymaker [24]
If you are trying to find the fraction the answer i believe is 4/8 b/c you have 2 greys in all and two blues in all and all the colors together are a maximum of 8. The decimal would be 0.5 Hope this helps!!
4 0
3 years ago
Read 2 more answers
Calculate the sample variance and sample standard deviation for the following frequency distribution of heights in centimeters f
Zolol [24]

Answer:

\bar X = \frac{\sum_{i=1}^n X_i f_i}{n}= \frac{22026.1}{171}=128.81

s^2 = \frac{2839948.85- \frac{(22026.1)^2}{171}}{171-1}= 16.59

s= \sqrt{16.587}=4.07

Step-by-step explanation:

For this case we can calculate the sample variance and deviation with the following table

Class               Midpoint (Xi)    fi        Xi*fi       Xi^2 *fi

120.6-123.6        122.1             17      2075.7   253443

123.7-126.7        125.2            49      6134.8    768077

126.8-129.8        128.3            29     3720.7    477365.8

129.9-132.9        131.4             41       5387.4   707904.4

133.0-136.0        134.5            35      4007.5   633158.8

___________________________________________

Total                                        171   22026.1    2839948.85

For this case we can calculate the mean or expected value with the following formula:

\bar X = \frac{\sum_{i=1}^n X_i f_i}{n}= \frac{22026.1}{171}=128.81

Now we can calculate the sample variance with the following formula:

s^2 =\frac{\sum f_i X^2_i -[\frac{(\sum X_i f_i)}{n}]^2}{n-1}

And if we replace we got:

s^2 = \frac{2839948.85- \frac{(22026.1)^2}{171}}{171-1}= 16.59

And the standard deviation would be the square root of the variance and we got:

s= \sqrt{16.59}=4.07

7 0
4 years ago
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