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3 years ago

Sheila I said going to divide a 36-inch piece of ribbon into 5 equal pieces she says each piece will be 7 inches long

Mathematics

1 answer:

blsea [12.9K]3 years ago

7 0

Well it would actually be 7.2 inches per each piece

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A bicyclist is riding on a path modeled by the function f(x) = 0.03(10x − x2), where x and f(x) are measured in miles. Find the

REY [17]

Answer: $0.024\ \text{miles per sec}$

Step-by-step explanation:

Given

Path is changing according to the function $f(x)=0.03(10x-x^2)$

Rate of change of the elevation is given by the derivative of the function

$\Rightarrow f'(x)=0.03(10-2x)$

At $x=1\ f'(x) \ \text{is}$

$\Rightarrow f'(x=1)=0.03(10-2\times 1)\\\Rightarrow f'(x=1)=0.03(8)\\\Rightarrow f'(x=1)=0.24\ \text{miles per sec}$

3 0

2 years ago

PLS PLS PLS HELP IM TERRIBLE AT MATH :( !!!!

alex41 [277]

In order from top to bottom, your answer should be:

8 0

3 years ago

Cna i get some help with dis plz

Tomtit [17]

Let $b_1,b_2,\ldots,b_{20}$ be the 20 marks of the boys, and $g_1,g_2,\ldots,g_{10}$ be the 10 marks of the girls.

We know that the global mean was 70, meaning that

$\dfrac{b_1+b_2+\ldots+b_{20}+g_1+g_2+\ldots+g_{10}}{30}=70$

Multiplying both sides by 30 we deduce that the sum of the scores of the whole classroom is

$b_1+b_2+\ldots+b_{20}+g_1+g_2+\ldots+g_{10}=2100$

By the same logic, we work with the marks of the boys alone: we know the average:

$\dfrac{b_1+b_2+\ldots+b_{20}}{20}=62$

And we deduce the sum of the marks for the boys:

$b_1+b_2+\ldots+b_{20}=1240$

Which implies that the sum of the marks of the girls is $2100-1240=860$

And finally, the mean for the girls alone is

$\dfrac{860}{10}=86$

6 0

3 years ago

50 is 40% of what number

Tpy6a [65]

125. To find the answer to these questions, divide the number (50) by the percent in decimal form (40% = 0.4) 50 / 0.4 = 125. To make sure, 125 x 0.4 = 50.

7 0

3 years ago

Read 2 more answers

Help asap please and thank you…

timama [110]

Answer:

negative 5/7

Step-by-step explanation:

count up 5, count left 7

negative slope so negative 5/7

7 0

3 years ago