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3 years ago

Help with this too please!!!

Mathematics

1 answer:

Arlecino [84]3 years ago

8 0

Answer:

1. 150 2.55 3.63 4.325

Step-by-step explanation:

1. 180 minus 30 2. 180 minus 125 3. 90 minus 27 4. 380 minus 35

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Mhanifa please help with this I find it super difficult! Thanks! I will mark brainliest! Random answers will be reported !

Artyom0805 [142]

Answer:

The point that is equidistant to all sides of a triangle is called the incenter.

The incenter is located at the intersection of bisectors of the interior angles of a triangle.

The point that is equidistant to all vertices of a triangle is called the circumcenter.

The circumcenter is located at the intersection of perpendicular bisectors of the sides of a triangle.

See the attachment

The blue lines and their intersection shows the incenter.

The red lines and their intersection shows the circumcenter.

As we see the red point- the circumcenter is closer to vertex B.

4 0

3 years ago

I need some help with solving this problem 8d-5<6d+8

Lina20 [59]

Answer: d < 13/2

Step-by-step explanation:

Rearrange:

Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :

8*d-5-(6*d+8)<0

Step by step solution :

Step 1 :

1.1 Divide both sides by 2

d-(13/2) < 0

Solve Basic Inequality :

1.2 Add 13/2 to both sides

d < 13/2

Inequality Plot :

1.3 Inequality plot for

2.000 d - 13.000 < 0

6 0

3 years ago

Jane has a pre-paid cell phone with Splint. She can't remember the exact costs, but her plan has a monthly fee and a charge for

yan [13]

Answer:

The costs of the plan are $0.15 per minute and a monthly fee of $39

Step-by-step explanation:

Let

x ----> the number of minutes used

y ----> is the total cost

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the ordered pairs

(100,54) and (660, 138)

substitute

$m=\frac{138-54}{660-100}$

$m=\frac{84}{560}=\$0.15\ per\ minute$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=0.15\\point\ (100,54)$

substitute

$y-54=0.15(x-100)$

step 3

Convert to slope intercept form

Isolate the variable y

$y-54=0.15x-15\\y=0.15x-15+54\\y=0.15x+39$

therefore

The costs of the plan are $0.15 per minute and a monthly fee of $39

6 0

3 years ago

Optimization problem: what are the dimensions of the lightest open-top right circularcylindrical can that will hold a volume of

vivado [14]

So Volume of cylinder is pi*r^2*h = 1,000

Then lightest one means you have the smallest surface area. Which is one base and then the area of the surface. SA = pi*r^2 + 2pi*r*h

So now you have 2 equations, so:

h = 1,000/(pi*r^2)
So then SA = pi*r^2 + 2pi*r*(1,000/(pi*r^2) = pi*r^2 + 2,000/r

Derivative of SA is then 2pi*r -2,000/r^2. Set to 0

2pi*r-2,000/r^2 =0 --> 2pi*r^3 = 2,000 --> r^3 = 1,000/pi --> r = 10/pi^(1/3)

Now go back to the volume function: pi*r^2*h =1,000 --> 1,000/(pi*100/pi^(2/3)) = h
h = 10 / pi^(1/3)

3 0

3 years ago

Solve the equation for the red variable.

Harlamova29_29 [7]

Answer:

Step-by-step explanation:

B = 3V/h

Multiply by h on both sides

Bh = 3V

V = Bh/3

7 0

2 years ago