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vichka [17]
3 years ago
15

How many solutions in the equation below 145=10x-8x

Mathematics
1 answer:
iren2701 [21]3 years ago
4 0

Answer:

One

Step-by-step explanation:

145=2x

72.5=x that's one solution.

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A rectangle is 64 cm long 40 cm wide find is area and perimeter​
kow [346]

Answer:

Assuming the length to be x and the width to be y.

Since the area is 64cm, hence

x*y = 64 (equation 1)

Since the perimeter is 40cm, hence

x + x + y + y = 40

2x + 2y = 40

2(x + y) = 2(20)

x + y = 20 (equation 2)

Hence by using simultaneous equation,

x = 20 - y (equation 3)

Substituting equation 3 into equation 1, we get

(20-y)*y=64

20y-y^2=64

Tidying up the equation,

y^2 - 20y + 64 = 0

By using factorisation,

(y-16)(y-4)=0

y=16 or y=4

By substituting y=16 into equation 1,

x*16=64

x = 4

By substituting y = 4 into equation 1,

x*4=64

x=16

Therefore,

The length is 4 cm while the width is 16 cm.

OR

The length is 16 cm while the width is 4cm.

Hope this helps!!

7 0
3 years ago
How many unique 5 card hands can be drawn from a deck of cards?
sweet-ann [11.9K]

Answer:

0 2.598.960

Step-by-step explanation:

There are 52 different cards. Order does not matter.

\dfrac{52!}{(52 - 5)!5!} = 2598960

7 0
3 years ago
The temperature was 6° C.<br> By how much has it fallen if it is now -5° C?
Butoxors [25]

Answer:

11 °C

Step-by-step explanation:

  • Initial temperature = 6 °C
  • Final temperature = - 5°C
  • Change in temperature

= 6 - (-5)

= 6 + 5

= 11 °C

Hope it helps you in your learning process.

8 0
2 years ago
Read 2 more answers
World war 1 lasted from August 4th 1914 until November 11th, 1918. During this time an estimated 10 million lives were lost. Abo
Kryger [21]
The question is so dry, mechanical, and devoid of emotion
that it's terrifying.

There is no way to assign a number to "How many people were
dying per day", and I would prefer not even to think about it in
those terms.

-- The period of time from August 4, 1914 until November 11, 1918 is 1,560 days.

-- The "average", or better, the "unit rate" of 10 million events in 1,560 days
is the quotient

                   (10,000,000 events) / (1,560 days) 

               =  6,410.3 events per day

               =     267.1 events per hour

               =       4.45 events per minute.


Reciprocally, this is a unit rate of 

                  13.48 seconds per event,
                  sustained continuously for 4.274 years !

When will we ever learn ! ?
6 0
3 years ago
When an article is sold for $132.00, a profit of 10% is made. The cost of the<br> article is?
Orlov [11]

Answer:

118.8

Step-by-step explanation:

Profit=10%

=10/100 × $132

=$13.2

Cost price=Selling price- Cost price

=$132-$13.2

=$118.8

3 0
2 years ago
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