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3 years ago

I need help.... I don't understand this... Can some help me... PLEASE...

Mathematics

1 answer:

blagie [28]3 years ago

3 0

Answer:

slope = - 5

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 5 - 2x ← is in slope- intercept form

with slope m = - 2

Parallel lines have equal slopes

Hence the slope of a line parallel to the given equation is - 2

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Ann and Betty shared a sum of money in the ratio 2:3 respectively. Ann received $120. What is Betty's share?

rodikova [14]

Betty's share is 120 divided equally.

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3 years ago

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Write the equation of the line perpendicular to 3x+y=-8 that passes through (-3,1) . Write your answer in slope-intercept form.

murzikaleks [220]

I hope this helps you

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3 years ago

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PLEASE HELP!!! This is a trigonometry question. A conveyor is used to lift to a shredder. The most efficient operating angle of

s2008m [1.1K]

You can use the sin function to solve this.

Think of a triangle with the conveyor being the longest side (hypotenuse). The height (the vertical side) is H=17m. The angle of elevation is a=36.2. We are looking for length of the hypotenuse, L.

The sin is the ratio of height to hypotenuse: sin(36.2) = H/L = 17/L

Now solve for L:

L = 17/sin(36.2) = 17m/0.59 = 28.78m

The conveyor needs to be approx. 28.8m long to get close to the max. efficient angle.

8 0

3 years ago

Five spheres are being painted for a display at a store. If the diameter of each sphere is

ivanzaharov [21]

<h2>Hello!</h2>

The answer is:

The total area is:

$TotalArea=192.4cm^{2}$

To find the cloasest value to the total surface area that will be painted, we need to calculate the area of a single sphere, and then, multiply it by 5.

We know that the diameter of each sphere is 7 centimeters, so, calculating we have:

Calculating the radius we have,

$diameter=2*radius\\\\radius=\frac{diameter}{2}=\frac{7cm}{2}=3.5cm$

Then, calculating the area, we have:

$Area=\pi radius^{2}$

$Area=\pi 3.5cm^{2}=38.49cm^{2}$

Now that we have calculated the surface area of a single sphere, we need to calculate the area of the five spheres.

So, calculating we have:

$TotalArea=5*38.48cm^{2}=192.4cm^{2}$

Hence, the total area is:

$TotalArea=192.4cm^{2}$

Have a nice day!

4 0

3 years ago

Kristy earns $134 each day she works. Every day she spends $8 on breakfast and $12 on lunch. How much money will she have in 25

GaryK [48]

Answer:

Money she have in 25 days = $2850

Money she have in 50 days = $5700

Step-by-step explanation:

Kristy earns each day = $134

Spends on breakfast & lunch = $8 + $12 = $20

Reaming about each day = $134 - $20

= $114

Money she have in 25 days = 25 x $114

= $2850

Money she have in 50 days = 50 x $114

= $5700

7 0

3 years ago