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3 years ago

ASAP PLEASE HELP AND EXPLAIN!!!!!!!!

Mathematics

2 answers:

valkas [14]3 years ago

6 0

Whattttt heee saiddd^ hope I helped:(

yKpoI14uk [10]3 years ago

5 0

The equation for the area of a right triangle is 1/2 x base x height. therefore on the first triangle i would assume 4 and 3 are the base and the height. therefore the hypotenuse would be 5 because a^2 + b^2 = c^2. a and b are the base and the height and c is the hypotenuse. so if you multiply 3 by 4,3 and 5. youre new base and height would be 12 and 9 and the hypotenuse would be 15. if you plug 12 and 9 (the base and the height) into the formula for the area of a right triangle (1/2 x base x height) the area of the new triangle would be 54. hope this helps!!

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A car dealership needs to transport 842 cars to an island. The ferry can hold 5 cars. How many cars will the ferry take on its l

pantera1 [17]

You need to divide and get 168 with a remainder of 2 which is how many are left

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3 years ago

Identify each expression and value that represents the area under the curve y= x^2+4 on the interval [-3, 2].

Evgesh-ka [11]

The area is given exactly by the definite integral,

$\displaystyle\int_{-3}^2(x^2+4)\,\mathrm dx=\left(\frac{x^3}3+5x\right)\bigg|_{-3}^2=\frac{95}3\approx31.67$

We can write this as a Riemann sum, i.e. the infinite sum of rectangular areas:

• Split up the integration interval into n equally-spaced subintervals, each with length (2 - (-3))/n = 5/n - - this will be the width of each rectangle. The intervals would then be

[-3, -3 + 5/n], [-3 + 5/n, -3 + 10/n], …, [-3 + 5(n - 1)/n, 2]

• Over each subinterval, take the function value at some point x * to be the height.

Then the area is given by

$\displaystyle\lim_{n\to\infty}\sum_{k=1}^nf(x^*)\Delta x_k=\lim_{n\to\infty}\sum_{k=1}^nf(x^*)\frac5n$

Now, if we take x * to be the left endpoint of each subinterval, we have

x * = -3 + 5(k - 1)/n → f (x *) = (-3 + 5(k - 1)/n)² + 4

If we instead take x * to be the right endpoint, then

x * = -3 + 5k/n → f (x *) = (-3 + 5k/n)² + 4

So as a Riemann sum, the area is represented by

$\displaystyle\lim_{n\to\infty}\sum_{k=1}^n\left(\left(-3+\frac{5k}n\right)^2+4\right)\frac5n$

and if you expand the summand, this is the same as

$\displaystyle\lim_{n\to\infty}\sum_{k=1}^n\left(13-\frac{30k}n+\frac{25k^2}{n^2}\right)\frac5n=\lim_{n\to\infty}\sum_{k=1}^n\left(\frac{65}n-\frac{150k}{n^2}+\frac{125k^2}{n^3}\right)$

So from the given choices, the correct ones are

• row 1, column 1

• row 2, column 2

• row 4, column 2

5 0

3 years ago

Read 2 more answers

Last year Nancy weighted 37( 5)/(8) pounds. This year she weighed 42.7 pounds. How much did she gain?

Vlad [161]

Answer:

22.7 pounds

Step-by-step explanation:

Simply just subtract 42.7 with 37 (5/8) to get the answer. If done correctly, you should get 22.7 pounds.

So, the final answer is 22.7 pounds.

Hope this helped!

8 0

3 years ago

The first part of the trip was in a surrey at 8 mph, and the last part was in a buckboard at 12 mph. If the total trip was 104 m

Nata [24]

Answer:

4 hours at 8 mph and 6hours at 12 mph.

Step-by-step explanation:

8t + 12(10-t) = 104

8t + 120 - 12t = 104

4t = 16

t = 4

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3 years ago

A dice is rolled 360 times and the results are recorded as follows: 60 ones 58 twos 70 threes 74 fours 38 fives and 60 sixes

victus00 [196]

Answer:

58+70=128. 60+58+70+74+38+60=360. 128/360=0.356=0.36

Step-by-step explanation:

3 0

4 years ago