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4 years ago

Three more than 4 times a number is equal to 9 less than twice the number.

2 answers:

7 0

#3+4=9-2
or,3+4+2=9
9=9
#7*3+6=27
#22+5=27
These are the answers
If it helps you plzzzz brainlest me

If you have doubt ask me

SpyIntel [72]4 years ago

6 0

Answer:

x = 6 & -2
x = -6
x = -4.69 & 4.69

Step-by-step explanation:

Let unknown no. = x

3 + 4x = x² - 9

x² - 4x - 9 - 3 = 0

x² - 4x - 12 = 0

(x-6)(x+2) = 0

x = 6 & x = -2

7(4+x) = -14

4 + x = -2

x = -6

x² + 5 = 27

x² = 22

x = +-√22

x = +√22

= 4.69 (3s.f)

x = -√22

= -4.69 (3s.f)

(Correct me if i am wrong)

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Write the equation of a line perpendicular to y=0.25x-7 and passes through the point -6,8

horrorfan [7]

the equation of a line perpendicular to $y=0.25x-7$ and passes through the point (-6,8) is $y=-4x+30$

Step-by-step explanation:

We need to write equation of line perpendicular to $y=0.25x-7$ and passes through the point (-6,8)

Since the line $y=0.25x-7$ is in slope-inetercept form $y=mx+b$

the slope of line m = 0.25

As, the new line is perpendicular to the given line so, slopes of lines that are perpendicular are: slope = -1/slope1

So, slope will be -1/0.25 = -4

Now, finding y-intercept.

$y=mx+b8=4(-6)+b\\8=-24+b\\b=8+24\\b=30$

So, value of y-intercept b = 30

Now the equation of the required line having slope m= -4 and b =30 will be:

$y=mx+b\\y=-4x+30$

So, the equation of a line perpendicular to $y=0.25x-7$ and passes through the point (-6,8) is $y=-4x+30$

Keywords: Equation of line, slope-intercept form

Learn more about slope-intercept form at:

#learnwithBrainly

3 0

3 years ago

First right answer will get brainlist

guajiro [1.7K]

(1/5)s = 5
s = 5:(1/5) = 5*5 = 25

6 0

3 years ago

Read 2 more answers

What is the percent change of 36;63

STatiana [176]

First, find the difference.
63-36=27
Then, divide by the original number.
27/36=0.75
Then, put it in percentage form.
75%

7 0

3 years ago

Determine whether the series is convergent or divergent. [infinity] n = 1 1 n√9 the series is a ---select--- p-series with p =

inna [77]

The series is a convergent p-series with p = 3

<h3>How to know it is a divergent or a convergent series</h3>

We would know that a series is a convergent p series when we have ∑ 1 np. Then you have to be able to tell if the series is a divergent p series or it is a convergent p series.

The way that you are able to tell this is if the terms of the series do not approach towards 0. Now when the value of p is greater than 1 then you would be able to tell that the series is a convergent series.

The value of $\sqrt{9}= 3$

The formular for this is

∑ $\frac{1}{n^p} \\$

where n = 1

we know it is convergent because p is greater than 1. 3>1