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3 years ago

Question 2 of 10

Mathematics

2 answers:

nadezda [96]3 years ago

8 0

Equate the two z + w = x + y + z (subtract z from both sides) w = x + y

blagie [28]3 years ago

6 0

Answer:

A E F

Explanation:

Rules to know:

Triangles = 180 degrees

Straight lines = 180 degrees (example z + w = 180)

Therefore: angles of straight line = angles of triangle

A : w is an obtuse angle (greater than 90) and x is acute (less than 90)

E : w is obtuse whereas y is acute.

F : Since triangle = 180 = x + y + z

Straight line = 180 = z + w

Equate the two:

z + w = x + y + z (subtract z from both sides)

w = x + y

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Please help me (Will give brainliest)

Volgvan

This is very similar to the last question:-

0.51No = No e^_0.0001t

t = ln 0.51 / 0.0001

= 6733 years

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3 years ago

A lab technician has to fill the tank given below. Find it’s volume .

wel

Answer:

The volume of the cylinder shown in the figure is 628 cube meters

Step-by-step explanation:

Given figure is about cylinder

The height of the cylinder = h = 8 meters

The radius of the base of cylinder = r = 5 meters

Now, let The volume of cylinder = V m³

So, The volume of cylinder is given as V = $\pi$ ×r²×h

where r is the radius of its base

And h is the height of cylinder

The value of $\pi$ = 3.14

So, V = $\pi$ × r² × h

Or, V = 3.14 × (5)² × 8

Or, V = 3.14 × 25 × 8

or, V = 628 m³

So, The volume of cylinder = V = 628 m³

Hence The volume of the cylinder shown in the figure is 628 cube meters Answer

6 0

3 years ago

A spherical ball has a diameter of 8 inches. The ball has a slow leak in which the air escapes at the rate of 2.5 inches per sec

s344n2d4d5 [400]

Answer:

107.2 seconds

Step-by-step explanation:

Step one:

given

the diameter of ball 8 inches

radius= 8/2 = 4 in

The volume of the ball

$v=4/3 \pi r^3$

$v= 4/3*3.142*4^3\\\\v= 4/3*3.142*64\\\\v= 804.35/3\\\\v=268.12 in^3$

Step two:

we know that

rate= quantity/time

rate= 2.4 in per second

quantity= 268.12

time=?

time= quantity/rate

time= 268.12/2.5

time= 107.2 seconds

4 0

2 years ago

Can someone please help me

iren2701 [21]

It would be 30 degrees since a line is 180. You subtract 150 from 180 and get 30.

4 0

2 years ago

Read 2 more answers

4x^2-21x-18=0 Find the discriminate

SpyIntel [72]

a = 4, b = -21, c = -18

to keep from getting "mixed up", evaluate the discriminant first ...

b2 - 4ac = (-21)2 - 4(4)(-18) = 729

sqrt(729) = 27

x = (21 +/- 27)/8

x = -3/4, x = 6

since the discriminant is a perfect square, the original quadratic will factor ...

4x2 - 21x - 18 = 0

(4x + 3)(x - 6) = 0

x = -3/4, x = 6

6 0

2 years ago

Read 2 more answers