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3 years ago

What is the solution and justification to the following -4z>-64.4

Mathematics

1 answer:

alexandr1967 [171]3 years ago

8 0

Solving the inequality $-4z>-64.4$ we get $z$

Step-by-step explanation:

We need to solve the inequality $-4z>-64.4$ and find value of z.

Solving:

$-4z>-64.4$

Divide both sides by 4

$\frac{-4z}{4}>\frac{-64.4}{4}$

$-z>-16.1$

Divide both sides by (-1) and the sign of inequality is reversed i.e > is changed to < when we divide by - sign

$z$

So, solving the inequality $-4z>-64.4$ we get $z$

Keywords: Solving inequalities

Learn more about Solving inequalities at:

#learnwithBrainly

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3 years ago

Read 2 more answers

Slope=-3 goes through (1,2) whats the equation

dedylja [7]

Hi student, let me help you out! :)

..............................................................................................................................................

We are asked to find the equation of the line, using the given information:

$\star~\mathrm{-3}$ , which is the slope

$\star~\mathrm{(1,2)}$ which is a point that the line contains

$\triangle~\fbox{\bf{KEY:}}$

The slope is the number before x, in the form $\mathtt{y=mx+b}$ .

Since "m" is the slope, and we're given what the slope is, we can substitute -3 for m:

$\dag~\mathtt{y=-3x+b}$

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

Now, we need to find the y intercept, "b", of the line.

Here's how it's done:

Remember the point that the line contains, (1,2)?

Well, its y-coordinate is 2; so what we do is substitute 2 for y:

$\dag~\mathtt{2=-3x+b}$

Also, its x-coordinate is 1, so we substitute 1 for x:

$\dag~\mathtt{2=-3(1)+b}$

Now, solve for b:

$\dag~\mathtt{2=-3+b}$

Add 3 to both sides:

$\dag~\mathtt{2+3=b}$

Thus, we have

$\dag~\mathtt{5=b}$

Thus, the equation of the line is:

$\bigstar\underline{\boxed{\mathtt{y=-3x+5}}}$

Hope it helps you out! :D

Ask in comments if any queries arise.

#StudyWithBrainly

~Just a smiley person helping fellow students :)

$\overline{\underline{~~~~~~~~~~~~~~~~~~~~~~~~~~}}$

3 0

2 years ago

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photoshop1234 [79]

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2x+9=39

To find he answer of this you must subtract 9 from both sides

Then you are left with…

2x=30

Since 2x=30 means 2 times x equals 30

You can divide 2 from both sides to find the answer

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5 0

3 years ago

Eric invested 5000 dollars in the stock market. The value of his stock increased by 13%. a) what is the amount earned from this

blagie [28]

Answer:

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Step-by-step explanation:

Given

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This is calculated as:

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3 years ago