All categories

3 years ago

8 is what percent of 64?

Mathematics

1 answer:

pav-90 [236]3 years ago

6 0

Answer:

12.5%

Step-by-step explanation:

8/64

(8*100)/64 = 12.5

You might be interested in

Rewrite sin 225 degrees in terms of its reference angle. You do not need to evaluate sin 225.

ahrayia [7]

Answer:

225°: 45° (π / 4)

3 0

3 years ago

Show Workings. Question is in attached image.

Mashutka [201]

Answer:

A.]A chord of a circle of diameter 40 cm subtends an angle of 70° at the centre of the circle.

Solution given;

diameter [d]=40cm

centre angle [C]=70°

(a) Find the perpendicular distance be tween the chord and the centre of the circle.

Answer:

we have

the perpendicular distance be tween the chord and the centre of the circle=[P]let

we have

P=d Sin (C/2)

=40*sin (70/2)

=22.9cm

the perpendicular distance be tween the chord and the centre of the circle is 22.9cm.

(b) Using = 3.142, find the length of the minor arc.

Solution given;

minor arc= $\frac{70}{360}*πd=\frac{7}{36}*3.142*40$

=24.44cm

the length of the minor arc. is 24.44cm.

B.]In the diagram, XZ is a diameter of the cir cle XYZW, with centre O and radius 15/2 cm.

If XY = 12 cm, find the area of triangle XYZ.

Solution given:

XY=12cm

XO=15/2cm

XZ=2*15/2=15cm

Now

In right angled triangle XOY [inscribed angle on a diameter is 90°]

By using Pythagoras law

h²=p²+b²

XZ²=XY²+YZ²

15²=12²+YZ²

YZ²=15²-12²

YZ= $\sqrt{81}=9cm$

base=9cm

perpendicular=12cm

Now

Area of triangle XYZ=½*perpendicular*base

=½*12*9=54cm²

the area of triangle XYZ is 54cm².

3 0

3 years ago

Read 2 more answers

An apple orchard produces an average of 26,000 apples per season. This total can vary by as much as 3,700 . What are the expecte

Vilka [71]

Answer:

22300 and 29700

Step-by-step explanation:

Add 3700 to 26000

Subtract 3700 from 26000

8 0

4 years ago

3.28 in expanded form

never [62]

Answer:

3 ones

2 tenths

8 hundredths

I'm sorry if I misunderstood.

Good luck though! :)

Please add Brainliest if you'd like, not that it matters.

3 0

4 years ago

Hi!! please help with my statistics homework. I have no clue..

PolarNik [594]

Answer:

11.218 - 11.812 feet

Step-by-step explanation:

The factory manager does not want to use the rods from the bottom 20% and the top 15%. In other words, the factory manager doesn't want percentile 0-20 and percentile 85-100.

To solve this question, you need to know the z score of percentile 20 and 85.

Z-score of percentile 20 is -0.94, then the calculation will be :

x= 11.5 feet+ 0.3 feet* z-score

x= 11.5 feet+ 0.3 feet* (-0.94)

x= 11.5 feet- 0.282 feet

x= 11.218 feet

Z-score of percentile 85 is +1.04 then the calculation will be :

x= 11.5 feet+ 0.3 feet* z-score

x= 11.5 feet+ 0.3 feet* 1.04

x= 11.5 feet+ 0.312 feet

x= 11.812 feet

The range for the rod will be 11.218 - 11.812 feet

7 0

3 years ago