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3 years ago

Clare is in charge of getting snacks for a road trip with her friends and her dog. She has

Mathematics

2 answers:

Nataly_w [17]3 years ago

8 0

Answer: $15 and 50 cents!

Step-by-step explanation:

3.25x2=6.50+9=15.5

Eduardwww [97]3 years ago

6 0

Answer:

$15 and 50 cents

Step-by-step explanation:

3.25x2=6.50+9=15.50

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A tractor costs $20000 and depreciates in value by 15% per year. how much will the tractor be worth after 5 years?

Brut [27]

Answer:

$ 8874.11 after 5 years

Step-by-step explanation:

Each year it is worth 85 % of its value

20 000 ( .85)^5 = 8874.11

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2 years ago

Please help me with this

kondaur [170]

For number 1a. the answer is 7 to 26 or
7:26 or
$\frac{7}{26}$
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8:28 or
$\frac{8}{28} or \frac{2}{7}$
For number 3a. the answer is 12 to 13 or
12:13 or
$\frac{12}{13}$
For number 4a. the answer is 19 to 12 or
19:12 or
$\frac{19}{12}$
For number 5a. the answer is 29 to 10 or
29:10 or
$\frac{29}{10}$
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4 years ago

According to the school survey, 12% of the students at wok wood junior high school speak Spanish. There are 36 students at the s

aivan3 [116]

The correct answer should be 300

3 0

3 years ago

Given the infirmation in the diagram, which theorem best justifies why lines j and k must be parallel

Karo-lina-s [1.5K]

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Alternate Exterior Angles theorem

6 0

3 years ago

Read 2 more answers

Let f(x)=x^2f ( x ) = x 2. Find the Riemann sum for ff on the interval [0,2][ 0 , 2 ], using 4 subintervals of equal width and t

sladkih [1.3K]

Answer:

$A_L=1.75$

Step-by-step explanation:

We are given:

$f(x)=x^2$

$interval = [a,b] = [0,2]$

Since $n = 4$ ⇒ $\Delta x = \frac{b-a}{n} = \frac{2-0}{4}=\frac{1}{2}$

Riemann sum is area under the function given. And it is asked to find Riemann sum for the left endpoint.

$A_L= \sum\limits^{n}_{i=1}\Delta xf(x_i) = \frac{1}{2}(0^2+(\frac{1}{2})^2+1^2+(\frac{3}{2})^2)=\frac{7}{4}=1.75$

Note:

If it will be asked to find right endpoint too,

$A_R=\sum\limits^{n}_{i=1}\Delta xf(x_i) =\frac{1}{2}((\frac{1}{2})^2+1^2+(\frac{3}{2})^2+2^2)=\frac{15}{4}=3.75$

The average of left and right endpoint Riemann sums will give approximate result of the area under $f(x)=x^2$ and it can be compared with the result of integral of the same function in the interval given.

So, $(A_R+A_L)/2 = (1.75+3.75)/2=2.25$

$\int^2_0x^2dx=x^3/3|^2_0=8/3=2.67$

Result are close but not same, since one is approximate and one is exact; however, by increasing sample rates (subintervals), closer result to the exact value can be found.

3 0

3 years ago