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FrozenT [24]
3 years ago
9

How do i work out 782/2.2

Mathematics
1 answer:
solmaris [256]3 years ago
7 0
Move decimal point of 2.2 to right side to make it a whole number = 22

because u moved decimal point 1 time to eight in divisor , you also have to move it 1 time in dividend.....= 782.0 . which becomes = 7820

now continue dividing = 7820 / 22 = 355.45

HOPE IT HELPED !!!
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Which equation represents a line which is parallel to the line 8x + 7y = -28?
Paul [167]

Answer:

-8/7 slope

Step-by-step explanation:

so first u need to figure out the y=mx+b of ur equation 8x+7y=-28 to make it easier on urself yk. so first you get the y by it self and change it to become 7y= -8x-28 you do this by dragging the 8x to the other side which makes it negative since ur switching sides. now u divide each number by 7 since the 7y is by itself. doing this u get y= -8/7x-4. basically parallel = same slope so you will keep ur same slope or m as -8/7  and now all u need to find is b but in ur question u didnt give coordinates so irdk but ur answer has to have the -8/7 slope

5 0
2 years ago
Transform the polar equation to a Cartesian (rectangular) equation: r= 4sinθ
sweet-ann [11.9K]

Answer:

  x^2 +y^2 = 4y

Step-by-step explanation:

Using the usual translation relations, we have ...

  r^2 = x^2+y^2

  x = r·cos(θ)

  y = r·sin(θ)

Substituting for sin(θ) the equation becomes ...

  r = 4sin(θ)

  r = 4(y/r)

  r^2 = 4y

Then, substituting for r^2 we get ...

  x^2 +y^2 = 4y . . . . . matches the first choice

8 0
3 years ago
Can someone please help me ​
Anettt [7]

Answer:

y = -6x + 9/4

Step-by-step explanation:

y = mx + b

m= -6

b 9/4

7 0
3 years ago
Find the population density of each state. round to the nearest 10th.
matrenka [14]
Population density = population/area

Califonia = 36,500,000 / 163,707 = 223.0 persons per square mile
Florida = 18,300,000 / 65,758 = 278.3 persons per square mile
Iowa = 2,990,000 / 56,276 = 53.1 persons per square mile
New Jersey = 8,690,000 / 8,722 = 996.3 persons per square mile
Wyoming = 522,000 / 97,818 = 5.3 persons per square mile
3 0
3 years ago
Solve the following system of equations.<br><br> x - 2y = -2<br> 7x - 3y = 19
dolphi86 [110]

Answer:

Step-by-step explanation:

x-2y=-2     x=2y-2

7x-3y=19

substitute x  with 2y-2

7(2y-2)-3y=19     14y-14-3y=19       11y=33   y=3

substitue 3 for y

x-2(3)=-2     x-6=-2      x=4

x=4, y=3

btw if theres more similar questions like this use symbolab a website that solves and show you step by step in solving equations

really useful

8 0
2 years ago
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