All categories

4 years ago

Solve 2x + 9 (x-1) = 8 (2x + 2) - 5

Mathematics

2 answers:

slamgirl [31]4 years ago

3 0

Answer:

x = -4

Step-by-step explanation:

2x + 9 (x-1) = 8(2x + 2) -5

2x + 9x - 9 = 16x + 16 - 5

11x - 9 = 16x +11

-9 = 5x +11

-20= 5x

x= -4

Len [333]4 years ago

3 0

X= - 4
I used Photomath to solve

You might be interested in

What is the best definition of a triangle

jeka94

Answer:

MATHS

Step-by-step explanation:

1. 180° in a triangle

2. 60° in each angle

3. you can use Pythagoras theorem

* Equation = A² + B² = C²

5 0

4 years ago

Thank you so much!!!

vova2212 [387]

Answer:

$\fbox{\begin{minipage}{16em}Option D: y = (4/7)x + 8 is correct\end{minipage}}$

Step-by-step explanation:

(1) A typical form of equation of a line is:

$y = Mx + b$

with, $M$ is slope and $b$ is y-intercept.

(2) Another straight line has equation in form of:

$y = Nx + c$

with $N$ is slope and $c$ is y-intercept

(3) If these two lines are perpendicular, according to the property of two perpendicular lines on the two-dimensional plane, we have:

$M$ x $N$ = -1

(4) Transform the given equation of original line into typical form:

$7x + 4y = -24\\$

<=> $4y = -7x - 24$

<=> $y = (\frac{-7}{4})x - \frac{24}{4}$

<=> $y = (\frac{-7}{4})x - 6$

=> $M = \frac{-7}{4}$

=> $N = \frac{-1}{M} = \frac{-1}{\frac{-7}{4} } = \frac{-4}{-7} = \frac{4}{7}$

=> Option D: $y = (\frac{4}{7})x + 8$ is correct (Slope = $\frac{4}{7}$ )

Hope this helps!

4 0

3 years ago

Cabbie Taxi charges $4 for any pickup plus $3 per mile. How many miles were driven if the total charge was $52?

liberstina [14]

Answer:

16 miles

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

How long is GH?<br><br> Any help will me appreciated thank you

timurjin [86]

Answer:

7 sqrt(2)

Step-by-step explanation:

We can use trig functions

sin theta = opposite side/ hypotenuse

sin 45 = 7/x

Multiply each side by x

x sin 45 = 7

Divide each side by sin 45

x = 7 / sin 45

x = 7 (sqrt(2) /2)

x = 14 / sqrt(2)

We do not leave square roots in the denominator

x = 14 / sqrt(2) * sqrt(2)/ sqrt(2)

12 sqrt(2)/ 2

= 7 sqrt(2)

8 0

3 years ago

A cylinder has radius R = 3.7 and height H = 5.6 both measured in inches. What is the volume of this cylinder measured in cm3? (

lorasvet [3.4K]

Answer:

<h2>The volume is $3946.17cm^3$ </h2>

Step-by-step explanation:

We need to convert the radius and the height to cm first

1 cm = 0.393701 in

r (cm)= 3.7 in

$h(cm)= \frac{3.7}{0.393701}= 9.398 cm$

1 cm = 0.393701 in

h (cm)= 5.6 in

$h(cm)= \frac{5.6}{0.393701}= 14.22 cm$

The formula the volume of cylinder is

$volume= \pi r^2h\\\\volume= 3.142*9.398^2*14.22\\volume=3946.17cm^3$

7 0

4 years ago