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3 years ago

Please help I just can’t find the answer

Mathematics

2 answers:

Talja [164]3 years ago

4 0

Answer:

Step-by-step explanation:

Mumz [18]3 years ago

4 0

Answer:

The arc-length of the semicircle is approximately 34.54 units

Step-by-step explanation:

Recall that the arc length of the whole circumference is defined by the formula:

$Circumference's \,\,length=2\,\pi\,R$

where R is the radius of the circle (in your case 11 units)

So the length of half a circumference (which is actually the arc length of the semicircle you are requested to find) would be half of the formula we just mentioned:

$Arc\,\,length=\pi\,R\\Arc\,\,length= 3.14\,(11)\\Arc\,\,length= 34.54\, \,units$

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FromTheMoon [43]

Y= 2
x = 4

Did this with a lil guess and check

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3 years ago

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Write the equation of a line that is perpendicular to y=-2x/7+9 and that passes through the point (4,−6)

Shtirlitz [24]

Answer:

y = (7/2)x -20

Step-by-step explanation:

The given line is in slope-intercept form, so you can read its slope from the equation.

y = mx + b . . . . . m is the slope; b is the y-intercept

y = -(2/7)x + 9 . . . . . . has slope -2/7

The perpendicular line will have a slope that is the negative reciprocal of this, so will be ...

m = -1/(-2/7) = 7/2

We can use this and the given point to write the equation in point-slope form.

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We have m = 7/2, (h, k) = (4, -6) so the equation is ...

y = (7/2)(x -4) -6

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4 years ago

What is the slope of (0,0) (2,3)

Virty [35]

Answer:

3/2

Step-by-step explanation:

Para hallar la pendiente de dicha recta formada por dos puntos procederemos a usar la siguiente ecuación

m=y2-y1/x2-x1

Donde (0,0) ---->(x1,y1) (2,3)------>(x2,y2)

Remplazando x1,x2,y1,y2

m=3-0/2-0 = 3/2

De tal manera la m=3/2

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3 years ago

evaluate if s equals 5 and 2 equals 7 3s^2 +t^2 -3 please show how you got your work I will get brainiest

iragen [17]

$3 {(5)}^{2} + ( {7)}^{2} - 3 \\ 3(25) + 49 - 3 \\ 75 + 49 - 3 \\ = 121$

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3 years ago

PLEASE CHECK IF THIS IS CORRECT YOU WILL GET BRANLIEST

NARA [144]

1) 216

2) 1

3) 450 ml

4)15 packs

5)12 sq m

Step-by-step explanation:

Step 1:

1) The series given is the cube of the first n natural numbers. Hence the nth term of the series can be obtained by n³.

Here we need the 6th term, so the cube of 6 is 216

Step 2 :

2 ) Area of the cube is given as 8000 cubic cm.

Hence side of the cube is 20 cm cube

The radius of the sphere is 20 cm as the diameter is given as 10 cm.

Hence number of spheres that can be placed in a cube of side 20 cm is 20/20 = 1

Step 3 :

Total quantity of the mixture purchased from the chemist is 750 ml

Syrup and alcohol are in the ration 3:2

Hence the quantity of syrup in the mixture = 3/5 * 750 = 450 ml

Step 4 :

Length and breadth of the given room is 17 m and 15 m

Hence its area is 17 * 5 = 85 sq m.

Size of the tiles is 1 sq m

So for covering 85 sq m we need 85/1 = 85 tiles

Since the tiles are bought in packs of 6 we need 85/6 packs which is approximately 15 packs of tiles.

Step 5 :

Surface area of the given box with length as l, breadth as b and width as w is

2lw+2 lh+2 wh

here we have l,b,w as 3,2,2

so surface area is 3*2*2 = 12 sq m

7 0

3 years ago