3 years ago

Whats 19.8 to 1 significant figure

Mathematics

1 answer:

Crank3 years ago

6 0

19.8 rounded to 1 s.f. is 20

You might be interested in

The cereal box shown below is a rectangular prism. Find the surface area of the cereal box. \text{ cm}^2 cm 2 start text, space,

kogti [31]

Answer:

1070 cm.

Step-by-step explanation:

Its correct for Khan Academy:)

3 0

3 years ago

Read 2 more answers

Anna bicycled 2.75 miles in 0.3 of an hour. How far would she travel in one hour?

marshall27 [118]

Answer:

0.825 Miles

Step-by-step explanation:

2.75m x 0.3 = 0.825

4 0

3 years ago

A family wants to save for college tuition for their daughter. What continuous yearly interest rate r% is needed in their saving

sergey [27]

Answer:

The continuous yearly interest is 22.5% per year.

Step-by-step explanation:

Continuous yearly interest:

Continuous yearly interest is defined as the sum of the interest comes from principle and the interest comes from interest.

The formula for continuous interest yearly is

$A=Pe^{rt}$

where A = The final amount =$110,000

P= principle =$4,700

r= rate of interest

t= time (in year)= 14 years

$\therefore 110,000= 4,700e^{r\times 14}$

$\Rightarrow e^{14r}= \frac{110,000}{4,700}$

Taking ln both sides

$\Rightarrow ln e^{14r}= ln(\frac{110,000}{4,700})$

$\Rightarrow {14r}= ln(\frac{1100}{47})$

$\Rightarrow r=\frac{ln( \frac{1100}{47})}{14}$

$\Rightarrow r = 0.225$ (approx)

The continuous yearly interest is 0.225 = 22.5% per year.

4 0

3 years ago

The mass of Kelvin's soccer ball is 453 grams. What is this mass in milligrams?

slavikrds [6]

453000mg

I think it is correct !!

8 0

3 years ago

Which statement is true? A.Two angles can be complementary and equal. B.Two angles cannot be equal if they are complementary. C.

o-na [289]

A because complementary angles means 2 angles that add together to equal 90 degrees and it's possible for both angles to be 45.

3 0

3 years ago