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djyliett [7]
2 years ago
10

Help me pls, i need it!!

Mathematics
1 answer:
ratelena [41]2 years ago
8 0

Density expression

Density = mass = g or g = g/cm3

volume mL cm3

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A rectangular piece of land has an area of 3/4 square mile. The land is 21/2 mile. What is its width
OleMash [197]

Answer:

The width of the rectangle is  \frac{1}{14} miles

Step-by-step explanation:

Given as for rectangle

The area of rectangle = A = \frac{3}{4} mile²

The Length of rectangle = L = \frac{21}{2} mile

Let The width of rectangle = W miles

Now, From area of rectangle

I.e Area of Rectangle = Length × Width

Or , A = \frac{21}{2} mile  × W mile

Or, \frac{3}{4} mile² = \frac{21}{2} mile  × W mile

or, W = \frac{\frac{3}{4}}{\frac{21}{2}} mile

or, W = \frac{3\times 2}{4\times 21}

∴  W = \frac{1}{14} miles

Hence The width of the rectangle is  \frac{1}{14} miles  Answer

4 0
3 years ago
If y equals -18 when x is 6 find x when y is 6
Mekhanik [1.2K]

Answer:

x=-2

Step-by-step explanation:

-6/18=x/6

simplify the -6/18 into -1/3,

-1/3=x/6

cross product,

3*x=-1*6

3x=-6

x=-6/3

x=-2

8 0
2 years ago
HELP ME WITH THIS QUESTION PLEASE
lara [203]

Answer:

  • 0.79

Step-by-step explanation:

all you really need to do is multiply your decimal (15.8) by your percent (5) so, you problem would look like 15.8(.05) (note it is .<em>0</em>5 because there need to be 2 decimal places) so, your answer is .79

6 0
3 years ago
How do you solve the substitution of y=5x-3 and y=-6x-3
svlad2 [7]
5x-3=y      6x-3=y
x=1            x=1
51-3=y      61-3=y
51=5         61=6
5-3=y        6-3=y       
2               3
y=2           y=3               


8 0
3 years ago
Four-fifths of a spinach casserole is leftover after Sam has lunch. Jackie and Alicia each take 1/2 of the left over casserole.
valentina_108 [34]

Answer:

1/4

Step-by-step explanation:

Casserole received by Jackie and Alicie = 1/2 x 3/4 = 3/8 of the whole

Portion eaten by Jackie = 2/3 x 3/8 = 1/4 of the whole

6 0
2 years ago
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