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77julia77 [94]
2 years ago
15

What are the solutions for the following system of equations?

Mathematics
1 answer:
mario62 [17]2 years ago
8 0

We will use graphical way to solve these

  • 3x²+4y-21=0
  • 4x²+y=10

Graph both

The solutions are

  • (±1.209,4.154)

None of the above

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Please help me with this
Alexxandr [17]

If the perimeter is 98 cm, the sum of the lengths of two adjacent sides is 49 cm.

... (2x -1) + (3x +5) = 49 . . . . use the given information and relation

... 5x +4 = 49 . .  . . . . . . . . . simplify

... 5x = 45 . . . . . . . . . . . . . . . subtract 4

... x = 9 . . . . . . . . . . . . . . . . . divide by 5

The left side dimension is then

... 2x -1 = 2·9 -1 = 17 . . . . cm

The top dimension is

... 3x +5 = 3·9 +5 = 32 . . . . cm

The rectangle is 17 cm by 32 cm.

5 0
3 years ago
Please answer this 22360 to 1 significant figure?
miskamm [114]
Zeros do not count as a sigfig so when you do something like this problem just include the numbers until you hit your significant figure limit and then substitute zeros where you can. 20000
8 0
2 years ago
andrew made a scale drawing of the elementary school. The scale of the drawing was 8 centimeters : 3 meters. if the actual lengt
Schach [20]

Answer:i think its 80 cm

Step-by-step explanation:

4 0
3 years ago
Wich shapes can the the shaded area be divided into to find the area
lapo4ka [179]

Answer:

A. a rectangle and a triangle

8 0
2 years ago
Read 2 more answers
a globe has a diameter of 24 inches. a smaller globe has a diameter of 18 inches. What is the surface are to volume ratio of the
faust18 [17]

Answer:

1 pi: 3pi

Step-by-step explanation:

Step 1: Formula of surface area and volume of sphere

Surface area of sphere = 4 x pi x r^2

Volume of sphere = <u>4</u> x pi x r^3

                                 3

Step 2: Apply values in the formula

r = radius

radius = diameter/2

r=18/2 = 9

S.A = 4 x pi x 9^2

S.A = 324pi

Volume = <u>4</u> x pi x 9^3

                3

Volume = 972pi

Step 3 : Show in ratio

Surface area : Volume

324pi : 972pi

= 1 pi: 3pi

6 0
3 years ago
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