3 years ago

There are 39 students in Ms. Salazar's chemistry class. If Ms. Salazar divides the class into 9 lab

Mathematics

1 answer:

belka [17]3 years ago

5 0

Answer:

Number of lab group with 5 students = 3

Thank you

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The price of a new version of a computer game is 120% of the price of the original version. The original version cost $48. What

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It would $72 because you have to subtract the computer game and the original version cost.

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2 years ago

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Plz help lol i need to pass a lesson on ttm

DENIUS [597]

Answer:

she rode for 5 hours

Step-by-step explanation:

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2 years ago

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Ghella [55]

Answer:

26m

Step-by-step explanation:

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2 years ago

Use the arc length formula to find the length of the curve y = 4x − 5, −1 ≤ x ≤ 3. Check your answer by noting that the curve is

Reptile [31]

Answer:

$4\sqrt{17}$

Step-by-step explanation:

Let's find the answer by using the arc length formula which is:

$\int\limits^a_b {\sqrt{1+(\frac{dy}{dx})^{2} } } \, dx$

First, let's find dy/dx which is:

y=4x-5

y'=4*(1)-0

y'=4, now let's use the formula:

$\int\limits^3_{-1} {\sqrt{1+4^{2}} } \, dx=\sqrt{17} *(3-(-1))=4\sqrt{17}$

Now, using the distance formula we have:

$d=\sqrt{(x2-x1)^{2} +(y2-y1)^{2} }$

$y(-1)=4*(-1)-5=-9 \\y(3)=4*(3)-5=7$

So we have two points (-1, -9) and (3, 7) so:

$d=\sqrt{(3-(-1))^{2} +(7-(-9))^{2} }=4\sqrt{17}$

Notice both equations gave the same length $4\sqrt{17}$ .

5 0

3 years ago

Subtract (3 + 2i) from (–9 – 8i). –17 – 5i –6 – 6i –12 – 10i 12 + 10

kupik [55]

Answer:

-12 - 10i

Step-by-step explanation:

We are subtracting 3 + 2i from -9 - 8i. Rewrite the left side as -3 - 2i and then ADD this result to -9 - 8i:

-9 - 8i

-3 -2i

-----------

-12 - 10i

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2 years ago

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