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Yakvenalex [24]
3 years ago
8

Read the instructions

Mathematics
1 answer:
nordsb [41]3 years ago
7 0

Answer:

Step-by-step explanation:

\frac{5x - 2}{4}+\frac{1}{2}=\frac{3y+2}{2}

Multiply the equation by 4

4*\frac{5x - 2}{4}+4*\frac{1}{2}=4*\frac{3y+2}{2}\\

5x - 2 + 2 = 2*(3y + 2)

5x +0 = 2*3y + 2*2

5x = 6y + 4

5x - 6y = 4 --------------------(I)

\frac{7y+3}{3}=\frac{x}{2}+\frac{7}{3}\\

Multiply the equation by 6

6*\frac{7y+3}{3}=6*\frac{x}{2}+6*\frac{7}{3}\\

2*(7y + 3) = 3x + 2*7

14y + 6 = 3x + 14

14y = 3x + 14 - 6

14y = 3x + 8

-3x + 14y = 8 ------------------------(II)

Multiply equation (I) by 3 and equation (II) by 5 and then add

(I)*3              15x - 18y = 12

(II)*5           <u>-15x  + 70y = 40</u>     {Now add}

                          52y = 52

                              y = 52/52

                            y = 1

Substitute y =1 in equation (I)

5x - 6*1 =  4

5x - 6 = 4

      5x = 4 +6

      5x = 10

         x = 10/5

x = 2

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Answer:

100

Step-by-step explanation:

5x4=20

20x5=100

8 0
3 years ago
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Justine bought a pair of boots for $76.68 and paid 13% sales tax. What was the price of these boots including tax?
MArishka [77]

Answer: $86.65

Step-by-step explanation:

First, find how much Justine paid in tax. To do this, first convert 13% to a decimal by dividing by 100. This gets a tax rate of 0.13. Now, multiply the price of the boots by the tax rate. 76.68*0.13 = 9.9684. Round to the nearest cent to get $9.97.

Now, add the amount paid in tax to the price of the boots. 76.68+9.97 = $86.65.

4 0
2 years ago
F(x) = 2x3 + 732 – 4x - 5<br> g(x) = 3x – 2<br> Find ( f - g)(x).
Nadya [2.5K]

Answer:

(f-g) (x)=731.............

6 0
3 years ago
Put the following lengths in ascending order, 900cm, 8.9m, 895cm, 9.1m, 12000mm, 0.0092km.
matrenka [14]

Answer: 8.9 m, 895 cm, 900 cm, 9.1 m, 0.0092 km, 12000 mm

===========================================================

Explanation:

To be able to compare these various measurements, all of them must be the same unit. Let's convert each measurement to meters. If the measurement is already in meters, then we'll move onto the next measurement.

Here are some useful conversion factors

  • 1 m = 100 cm
  • 1 m = 1000 mm
  • 1 km = 1000 m

With those conversion factors in mind, we get the following conversions:

  • 900 cm = (900 cm)*(1 m/100 cm) = (900/100) m = 9 m
  • 8.9 m = already in meters, moving on
  • 895 cm = 8.95 meters; divide by 100 to convert from cm to meters as shown above
  • 9.1 m = already in meters, moving on
  • 12000 mm = (12000 mm)*(1 m/1000 mm) = (12000/1000) m = 12 m
  • 0.0092 km = (0.0092 km)*(1000 m/1 km) = (0.0092*1000) m = 9.2 m

Here is the summary of the conversions:

  • 900 cm = 9 m
  • 8.9 m = 8.9 m
  • 895 cm = 8.95 m
  • 9.1 m = 9.1 m
  • 12000 mm = 12 m
  • 0.0092 km = 9.2 m

The original list of

{900cm, 8.9m, 895cm, 9.1m, 12000mm, 0.0092km}

becomes this equivalent list

{9 m, 8.9 m, 8.95 m, 9.1 m, 12 m, 9.2 m}

in that exact order.

After converting everything to meters, we can then sort the values from smallest to largest. Doing so gets us this sorted list of

{8.9 m, 8.95 m, 9 m, 9.1 m, 9.2 m, 12 m}

Then you convert back each measurement to its original form

{8.9 m, 895 cm, 900 cm, 9.1 m, 0.0092 km, 12000 mm}

which is the final answer.

8 0
3 years ago
Read 2 more answers
PLEASE HELP ME WITH THIS ASAP !!
pishuonlain [190]

Answer:

132cm^2

Step-by-step explanation:

SA of square based pyramid:

SA = 2bs + b^2

b = base

s = slant height

-> 2(6)(8) + 6^2

-> 96 + 36

= 132cm^2

7 0
2 years ago
Read 2 more answers
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