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2 years ago

Can i find the area of a parrallelogram without the height?

Mathematics

1 answer:

NikAS [45]2 years ago

7 0

Answer:

yes

Step-by-step explanation:

you have to use trigonometry to find the area of a parallelogram without the height.

the formula is: Area = ab(sin(x))

Where a and b are the length of parallel sides and x is the angle between the sides of the parallelogram.

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The video streaming service that you want to use is represented with the equation below, where y represents the the total monthl

Hitman42 [59]

(look at the picture for the answers)

8 0

3 years ago

Find the vertex form of y=-x^2-10x-21

luda_lava [24]

Answer:

$\large\boxed{y=-(x+5)^2+4}$

Step-by-step explanation:

$\text{The vertex form of an quadratic equation}\\\\f(x)=ax^2+bx+c=a(x-h)^2+k\\\\h=\dfrac{-b}{2a}\\\\k=f(k)=\dfrac{-(b^2-4ac)}{4a}\\=================================$

$\text{We have:}\\\\y=-x^2-10x-21\\\\a=-1,\ b=-10,\ c=-21\\\\h=\dfrac{-(-10)}{2(-1)}=\dfrac{10}{-2}=-5\\\\k=f(-5)=-(-5)^2-10(-5)-21=-25+50-21=4\\\\y=-(x-(-5))^2+4=-(x+5)^2+4$

5 0

3 years ago

A frame shop owner is working with her apprentice, who takes four times as long as

Lunna [17]

Answer:

1 hour

Step-by-step explanation:

25min=1 poster for the shop owner

25×4=100

100×8=800

800÷25=32 posters in 8hrs for the shop owner

1hr×8=8 posters for the apprentice

thus 40 in total

6 0

4 years ago

For which of the following correlations would the data points be clustered most closely around a straight line?

Flauer [41]

Answer:

The correct option is C) r=-0.80

Step-by-step explanation:

Consider the provided information.

Properties of r in a scatter plot:

The value of r is between -1 and +1.

If the value of r is positive then it associated with positive relationship if the value of r is negative it associated with negative value.

The greater value of r would be closely around a straight line(Regardless of sign).

Now consider the provided relation.

The use of regression line is to minimize the distance between projections and real values.

Correlation is inversely proportional to difference between predicted values and actual values.

So for good fit we just need to look for the highest value of r regardless of the sign.

From the provided options the highest value of r=-0.80

Thus, the correct option is C) r=-0.80

7 0

3 years ago

Sally wants to find out what number is 165% of 340. If w represents this unknown number, which proportion can Sally use to find

Mariana [72]

165/100 x 340 = w
56100/100 = w
w = 561

5 0

3 years ago

Read 2 more answers