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3 years ago

Solve 3x−5 = 9. x = −3 x = 2 x = 7 x = 8

Mathematics

2 answers:

Nina [5.8K]3 years ago

7 0

Solve 3x−5 = 9:

Add 5 to both sides, to isolate 3x on the left side: 3x = 5+9 = 14

Solve this for x: x = 14/3

SOVA2 [1]3 years ago

5 0

Answer:

Step-by-step explanation:

Convert 9 to base 3

9 = $3^{2}$

$3^{x-5}$ = $3^{2}$

if $a^{f(x)}$ = $a^{g(x)}$ , then f(x) = g(x)

x - 5 = 2

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2. Find the median of the data set: 15, 6, 7, 10, 8, 9, 8, 14, 13.<br><br>please help asap

dangina [55]

To find the median the first thing we need to do is organize the numbers from smallest to largest:

6 7 8 8 9 10 13 14 15

Then if the amount of numbers is odd, the median is the number which is in the middle. In this case the middle number is 9.

6 7 8 8 9 10 13 14 15

Hope this helps mate! Best of luck to you. :)

4 0

2 years ago

PLEASEEE HELP MEEE!! I DONT UNDERSTAND AT ALL!!

jenyasd209 [6]

Domain: (-∞,∞)

Range: (3,∞)

x-intercepts: none

y-intercepts: (0,7)

Interval positive: (3,∞)

Interval negative: none

Interval increasing: (7,∞)

Interval decreasing: (-∞,7)

I'm not sure what the average rate of change over is though.

7 0

3 years ago

Equation for line passing through (4,3) perpendicular to y=5x+4

ehidna [41]

Perpendicular to the line y = 5x - 9

m= -1/5

the line passing through the point (1, 4):

4=-1/5*1+q
q= 21/5

the equation is:
y= -1/5x +21/5
or
x+5y-21=0

5 0

3 years ago

-1 1/3 divided by 2 2/15

arsen [322]

Answer:

-5/8

Step-by-step explanation:

4 0

3 years ago

Im not sure how to find the missing angle

LuckyWell [14K]

Answer:

Step-by-step explanation:

the question is asking for the length of the side labeled x

use Pythagoras' theorem to find that side

where c = x because c represents the hypotenuse in the theorem and x is on the hypotenuse in this problem

c = $\sqrt{a^{2} + b^{2} }$

sooo plug in a = 14 and b = 10

c = $\sqrt{14^{2} + 10^{2} }$

c = $\sqrt{196+100}$

c = $\sqrt{296}$

c= 17.20465..... ( that's the approx. length of side x in the problem )

since this is a right triangle we could use trigonometry to find the two angles use SOH CAH TOA to remember how those functions fit on the triangle.

Sin(Ф)=Opp/Hyp Cos(Ф)=Adj/Hyp Tan(Ф)=Opp/Adj

since we know the Hyp (hypotenuse) and the side adjacent will be the side with the 10 soooo...

Cos(Ф)=10/17.20465

Ф = arcCos(10/17.20465)

Ф = 54.4623° is the angle on the side with 10

the side with 14 then has an angle of 35.5376°

5 0

3 years ago