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Sindrei [870]
3 years ago
12

Solve the following equation. Round to the nearest tenth. 8x -1 = -9 + 2x

Mathematics
2 answers:
motikmotik3 years ago
6 0

Answer:

8x-2x=1-9

6x=-8

x= -4/3

grigory [225]3 years ago
4 0

Answer:

.75

Step-by-step explanation:

8x-1=-9+2x

6x-1=-9

6x=-8

x=.75

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Sierra downloaded 123 pictures from her cell phone to her computer. These pictures used 246 megabytes of space on her computer.
defon

Answer:

94 Mb

Step-by-step explanation:

123x=246Mb---->x=2Mb

46x=92Mb

3 0
3 years ago
The recursive rule for a sequence is shown.<br><br> an=an−1+9<br><br> a1=21
ivann1987 [24]

Step-by-step explanation:

soo wat u wanna do with this?

6 0
3 years ago
The solution for{x-y=-2 <br> 2x+y=8
sveta [45]
I hope this helps you



x-y=-2 y=x+2


2x+y=8


2x+x+2=8


3x=8-2


3x=6


x=2


y=x+2 y=2+2 y=4
6 0
4 years ago
Jack measured 1 amp as the total current in a certain circuit when he applied 20 volts to the circuit. When he applied 60 volts,
Natali5045456 [20]

Answer:

The linear equation is V - IR =0

The total current is 2.5 amps

Step-by-step explanation:

According to ohms law, the voltage (V) applied is directly proportional to current (I)

Therefore, V = IR

V - IR = 0 (R is resistance)

When V = 20, I = 1

The 1st equation is 20 - R = 0

When V = 60, I = 3

The 2nd equation is 60 - 3R = 0

From the 1st equation, R = 20

Substiting R = 20, V = 50 into the linear relation V - IR = 0

50 - 20I = 0

50 = 20I

I = 50/20 = 2.5 amps

3 0
3 years ago
Need help please can you give answer with working out i can not answer as it is quite gard
Elis [28]

Step-by-step explanation:

\text{Given:}\\\\AB=3x-4\\AC=2x+12\\BC=7x-2\\AB:AC=1:2\Rightarrow(3x-4):(2x+12)=1:2\\\\\dfrac{3x-4}{2x+12}=\dfrac{1}{2}\qquad\text{cross multiply}\\\\(3x-4)(2)=(2x+12)(1)\qquad\text{use the distributive property}\\\\(3x)(2)+(-4)(2)=2x+12\\\\6x-8=2x+12\qquad\text{add 8 to both sides}\\\\6x-8+8=2x+12+8\\\\6x=2x+20\qquad\text{subtract}\ 2x\ \text{from both sides}\\\\6x-2x=2x-2x+20\\\\4x=20\qquad\text{divide both sides by 4}\\\\\dfrac{4x}{4}=\dfrac{20}{4}\\\\x=5

\text{Put the value of}\ x\ \text{to}\ AC\ \text{and}\ BC:\\\\AC=2(5)+12=10+12=22\\\\BC=7(5)-2=35-2=33\\\\AC:BC=22:33=\dfrac{22}{33}=\dfrac{22:11}{33:11}=\dfrac{2}{3}=2:3

4 0
3 years ago
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