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3 years ago

A class votes for their class president

Mathematics

2 answers:

nata0808 [166]3 years ago

5 0

Answer: 35

Step-by-step explanation:

ladessa [460]3 years ago

3 0

35 you would do 21 divided by 0.6 (60% as a fraction) and you get 35

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The rule is “Left, Right, Left, Down.” Which way does the 19th arrow point?

Georgia [21]

Left is the answer. Hope this helps

8 0

3 years ago

What is the total area of the regions between the curves y = 6x2 − 18x and y = −6x from x = 1 to x=3?.

kvasek [131]

Using integration, it is found that the area between the two curves is of 22 square units.

<h3>What is the area between two curves?</h3>

The area between two curves y = f(x) and y = g(x), in the interval from x = a to x = b, is given by:

$A = \int_{x = a}^{x = b} |f(x) - g(x)| dx$

In this problem, we have that:

$f(x) = 6x^2 - 18x, g(x) = -6x, a = 1, b = 3$ .

Hence, the area is:

$A = \int_{1}^3 |6x^2 - 12x| dx$

$A = |x^3 - 6x^2|_{x = 1}^{x = 3}$

Applying the Fundamental Theorem of Calculus:

$A = |3^3 - 54 - 1^3 + 6|$

$A = 22$

The area between the two curves is of 22 square units.

More can be learned about the use of integration to find the area between the two curves at brainly.com/question/20733870

8 0

3 years ago

In a fruit survey, 300 children choose their favorite fruit out of apples, bananas and watermelon. 38% chose apples, 28% chose b

mojhsa [17]

34 percent chose watermelon i think

8 0

3 years ago

Ji-Hun and Kana are running a marathon. Due to the volume of people running, the starts occur in waves. Kana starts at 9:35 a.m.

iris [78.8K]

Answer:

23.52 miles

Step-by-step explanation:

Let us find the number of miles that they would have run.

Kana starts at 9:35 a.m. and runs at an average rate of 7 mph.

Let the time she has spent so far be t.

Speed is given as:

s = d / t

where d = distance and t = time

=> d = s * t

Therefore, for Kana:

d = 7 * t = 7t _____________(1)

Ji-Hun starts at 10:00 am (25 minutes after Hannah) and runs at an average rate of 8 mph.

25 minutes = 25/60 hour = 0.42 hour

So, his time (compared to Kana's) is t - 0.42.

therefore, for Ji-Hun:

d = 8 * (t - 0.42)

=> d = 8t - 3.36 ____________(2)

Equating (1) and (2):

7t = 8t - 3.36

=> 8t - 7t = 3.36

t = 3.36 hours

Therefore, let us find d:

d = 7 * 3.36 = 23.52 miles

So, Ji-Hun will catch up to Kana after 23.52 miles.

6 0

3 years ago

Add 7 3/10+4 4/15. Simplify the answer and write it as a mixed number.

aev [14]

Answer:

⟾ $11 \frac{17}{30}$

Step-by-step explanation:

⟾ $7 \ \frac{3}{10} + 4 \ \frac{4}{15}$

⟾ $\frac{73}{10} + \frac{64}{15}$

⟾ $\frac{219 +128 }{30}$

⟾ $\frac{347}{30}$

Now write as mixed fraction,

⟾ $11 \ \frac{17}{30}$

Hope it's helps you

5 0

3 years ago