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3 years ago

-7 times a = 14? a = -7, right?

Mathematics

2 answers:

quester [9]3 years ago

6 0

Answer:

a = -2

Step-by-step explanation:

-7 * -2 = 14

Wittaler [7]3 years ago

3 0

Answer:

− 7 ⋅ a

Step-by-step explanation:

Nothing further can be done with this topic. Please check the expression entered or try another topic.

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A class consists of 23 women and 83 mean. If a student is random selected, what is the probability that the student is a woman?

slavikrds [6]

Answer:

$P(Woman) = \frac{23}{106}$

Step-by-step explanation:

Given

$Women = 23$

$Men = 83$

Required

$P(Woman)$

This is calculated as the number of women divided by the population of the class

i.e.

$P(Woman) = \frac{Women}{Women + Men}$

So, we have:

$P(Woman) = \frac{23}{23+83}$

$P(Woman) = \frac{23}{106}$

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3 years ago

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Pani-rosa [81]

4x = 157.2

4x/4 = 157.2/4

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3 years ago

1. Which ordered pairs are a solution to the equation?

mojhsa [17]

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3 years ago

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Arisa [49]

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3 years ago

Read 2 more answers

Solve the given differential equation by using an appropriate substitution. the de is homogeneous. (y2 yx) dx − x2 dy = 0

Schach [20]

The solution for the given differential equation is lnlxl = $\frac{-x}{y} +C$

Given,

$(y^{2} +y^{x} )dx - x^{2} dy =0$

Here,

x = vy, dx = vdy + ydv

y = ux, dy = udx + xdu

Then,

$((ux)^{2} +(ux)x)dx-x^{2} (udx+xdu)=0\\=u^{2} x^{2} dx+ux^{2} dx-x^{2} udx-x^{3} du=0\\=u^{2} x^{2} dx=x^{3} du\\=\frac{x^{2} }{x^{3} } dx=\frac{1}{u^{2} } du$

Now,

$\int\limits^a_b {\frac{1}{x} } \, dx =\int\limits^a_b {u^{-2} } \, du$

l $n$ l $x$ l $=\frac{u^{-1} }{(-1)} +C$

l $n$ l $x$ l $=\frac{-1}{u} +C$

y = ux

u = $\frac{y}{x}$

That is l $n$ l $x$ l $=\frac{-x}{y} +C$

Learn more about differential equation here: brainly.com/question/21852102

#SPJ4

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1 year ago