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3 years ago

Please help taking test rn

Mathematics

1 answer:

True [87]3 years ago

7 0

Answer:

Drop Down 1:

Volume

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Day

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For every left-handed person, there are about 4-right handed people. If there are 30 students in a class, predict the number of

allochka39001 [22]

Answer:

There are 24 right handed students

Step-by-step explanation:

This is a ratio question so it would be represented as 1:4.

First you would do 1 + 4 which is 5.

Then do 30 ÷ 5 which is 6.

Finally multiply 6 by 4 and 1.

So 6 × 4 × 1 is 24.

So there are 24 students who are right handed.

Hope this makes sense!

4 0

3 years ago

Solve the differential equation. y' + 5xey = 0.

Gwar [14]

Answer:

The solution is $y = - ln(\frac{5}{2}x^{2} + C)$

Step-by-step explanation:

To solve the differential equation, we will find $y$

From the given equation, y' + 5xey = 0.

That is, $y' + 5xe^{y} = 0$

This can be written as

$\frac{dy}{dx} + 5xe^{y} = 0$

Then,

$\frac{dy}{dx} = - 5xe^{y}$

$\frac{dy}{e^{y}} = - 5x dx$

Then, we integrate both sides

$\int {\frac{dy}{e^{y}}} =\int {- 5x dx}$

$\int {e^{-y}dy }} =\int {- 5x dx}$

Then,

$-e^{-y} = -\frac{5}{2}x^{2} + C$

$e^{-y} = \frac{5}{2}x^{2} + C$

Then,

$ln(e^{-y}) = ln(\frac{5}{2}x^{2} + C)$

Then,

$-y = ln(\frac{5}{2}x^{2} + C)$

Hence,

$y = - ln(\frac{5}{2}x^{2} + C)$

8 0

3 years ago

PLEASE HELP! 3ND TIME I ASKED THIS!!!

Citrus2011 [14]

Relative to the ground Emma's velocity is 50 m/s + 1 m/s =

Answer: 51 m/s

We don't use that other equation.

4 0

3 years ago

Read 2 more answers

A group of 80 students in a college were surveyed. They are asked which of Spanish or French they are studying. 71 of the studen

Anuta_ua [19.1K]

Answer:

see below

Step-by-step explanation:

80 - 71 = 9

That means 9 studied neither language

25+14 = 39 studied only 1 language

71 - 39 =32

32 studied both

8 0

3 years ago

Find the simple interest, I, and the balance earned or due.

Furkat [3]

I=PRT
I=interest
P=principal
R=rate in deciaml
t=time in years

12 months per year

I=800(0.08)(9/12)
I=(64)(3/4)
I=48

interest earned is $48

8 0

3 years ago