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2 years ago

Find the value of each variable and show which property is used.

Mathematics

1 answer:

mojhsa [17]2 years ago

6 0

7y-2=5y+4
+2 +2
__________
7y= 5y + 6
-5y -5y
__________
2y= 6

Y=3

3x+2=23
3x =21
x= 7

7(3) -2= 5(3)+4
19=19
x=19

3(7)+2=23
23= 23
Y=23

Adding and subtracting property

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a sofa at Leon's and Pei was originally $1,899 the price was reduced by 35% for a quick sale but when it's still did not sell it

sineoko [7]

Hey there!!

Let's take a closer look at the question,

We have the original price with included 15% tax

This original price is first reduced by 35% , first let's solve this.

35% = 35 / 100 = 0.35

0.35 × 1899

... $664.65 = 35% of of $1899.00

It would be sold for

... 1899 - 664.65

... $1234.35

Now, this price is further reduced by 20%

20% = 20/100 = 0.20

... 0.20 × 1234.35

... $246.87

This is 20% of 1234.35

Now, the price it would be sold for =

... $1234.35 - $246.87

... $987.42 is the final price the sofa would be sold for.

Hope my answer helps!!

7 0

2 years ago

Read 2 more answers

25 POINTS QUICK!!! could someone please help me with these two problems?? and possibly explain?? i need work too please! 25 POIN

svet-max [94.6K]

Answer:

the first one A the sum of the angles are 10x+10 For the second one B the sum wud be 8x+20

Step-by-step explanation:

you juts add them all together

6 0

2 years ago

Read 2 more answers

What are the real or imaginary solutions of each polynomial equation?

Semmy [17]

1) a
2) c

#1 explanation:

x^4-20x^2=-64
x^4-20x^2+64=0
(find a number that multiplies to the last number aka 64 and adds up to b aka 20)
((x-4)(x-16))^2
x= -2,2,-4,4

same for #2 w different variable and numbers

6 0

2 years ago

75 POINTS Need an immediate answer please brainliest will be given! A train left a station travelling to a city at 30 mph. The t

yaroslaw [1]

The value of distance between the station and the city in terms of miles which train and car travelled at interval of 2 hours is 129.6 miles.

<h3>What is the rate of speed?</h3>

The rate of speed is the rate at which the total distance is travelled in the time taken. Rate of speed can be given as,

r=d/t

Here, (d) is the distance travelled by the object and (t) is time taken but the object to cover that distance.

The train traveled 1/3 of the distance at 30 mph and the remaining distance at 40 mph. Let <em>t</em> is the time the train has taken to travel and x is the distance it travelled. Thus,

$t=\dfrac{\dfrac{1}{3}x}{30}+\dfrac{\dfrac{2}{3}x}{40}\\t=\dfrac{x}{90}+\dfrac{x}{60}\\t=\dfrac{2x+3x}{180}\\t=\dfrac{5x}{180}\\t=\dfrac{x}{36}$

After two hour a car left the same station traveled the first 3 hours at 35 mph and the remaining distance at 51 mph. Let <em>t</em> is the time the car has taken to travel and x is the distance it travelled. Thus,

$t+2=3+\dfrac{(x-3\times35)}{51}$

As t is same, thus put the value of t in this equation,

$\dfrac{x}{36}=3-2+\dfrac{(x-3\times35)}{51}\\\dfrac{x}{36}=3-2+\dfrac{(x-3\times35)}{51}\\\dfrac{x}{36}=1+\dfrac{(x-105)}{51}\\\dfrac{x}{36}=\dfrac{(51+x-105)}{51}\\51x=36x-54\times36\\51x-36x=1944\\x=\dfrac{1944}{15}\\x=129.6$

Thus, the value of distance between the station and the city in terms of miles which train and car travelled at interval of 2 hours is 129.6 miles.

Learn more about the rate of speed here:

brainly.com/question/359790

#SPJ1

6 0

1 year ago

65÷5=____ with ____ left over

Molodets [167]

65 ÷ 5 = 11 with 0 left over

Hope this helps! ;)

7 0

2 years ago