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2 years ago

Can someone help me with these 4 problems

Mathematics

1 answer:

o-na [289]2 years ago

5 0

Answer:

80, 0.9, 8, 0.09

Step-by-step explanation:

Places are...

1 - ones

10 - tens

100 - hundreds

etc.

Decimal places are...

0.0 - tenths

0.00 - hundredths

0.000 - thousandths

etc.

(a) The digit in the ones place is 8. It is 1/10 of 80 because...

1/10 * x = 8

x/10 = 8

Multiply both sides by 10

x=80

(b) The digit in the hundredths place is 0.09. It is 1/10 of 9 because...

1/10 * x = 0.09

x/10 = 0.09

Multiply both sides by 10

x=0.9

(d) The digit in the tenths place is 0.9. We can divide it by 10 to find that it is 10 times as much as 0.09.

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2 years ago

Find the distance between the origin and the point R = (9,7,8). The distance is: Ensure that you use at least 4 decimal place ac

Brrunno [24]

Answer:

Distance between points R=(9,7,8) and origin is,

d = 13.9283 units.

Step-by-step explanation:

We have to calculate the distance between the two points,

Where,

the first point is origin, i.e.

Q = (0,0,0)

and R = (9,7,8)

According to distance formula, the distance between two points can be given by

$d\ =\ \sqrt{(x_1-x_2)^2+(y_1-y_2)^2+(z_1-z_2)^2)}$

$=\ \sqrt{(0-9)^2+|(0-7)^2+(0-8)^2)}$

$=\ \sqrt{(-9)^2+(-7)^2+(-8)^2)}$

$=\ \sqrt{81+49+64}$

$=\ \sqrt{194}$

= 13.9283

Hence, the distance between two points R=(9,7,8) and origin is 13.9283 units.

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