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horrorfan [7]
3 years ago
13

An ancient calculator has faded etchings on its dials. Scientists used an x-ray scanner to decipher the etchings. A long x-ray h

as a wavelength of about 10 nanometers. How many meters is this? The prefix "nano" represents the exponent 1 x 10^-9

Mathematics
1 answer:
azamat3 years ago
7 0

Answer:

B)

Step-by-step explanation:

hope it helps an hope u got it

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Jose can read 7 pages of his book in5 minutes. at this rate, how long will it take him to read the entire 175-page book?
Lera25 [3.4K]
Since 7 pages could be in 5 min.
So time required by 1 page 5/7 min.
So time required by 175 pages =175×5/7=125 min.
= 2 hours and 5minutes
8 0
4 years ago
Winona’s bowling scores for the past nine weeks are 195, 180, 195, 212, 208, 231, 179, 246, and 195. Find the mean, median, and
belka [17]

Answer: Mean = 204.6  , Median = 195 and mode =195

Step-by-step explanation:

The given data for Winona’s bowling scores for the past nine weeks : 195, 180, 195, 212, 208, 231, 179, 246,  195.

The formula to find Mean is given by :-

\text{Mean}=\dfrac{\text{Sum of all observations}}{\text{Number of observations}}\\\\=\dfrac{1841}{9}=204.555555556\approx204.6

For median , first we arrange data values in order as

179, 180, 195, 195, 195, 208, 212, 231, 246

Since the number of data values is 9 (odd).

∴ Median = Middle most data value = 195

Also, Mode = Most occurring data value = 195

3 0
4 years ago
lan has $28 in his checking account. If he writes a check for $12, how much money is left in his account?
Reika [66]

Answer:

$16 once the check is cashed in

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Select the correct way to read this number 68.018
Rasek [7]

Are there answers you can provide?

You read the number "sixty-eight and 18 thousandths" \


Hope that helps!

8 0
3 years ago
Richard’s store sells pineapples and grapefruits. Pineapples originally cost $5.15 apiece, and grapefruits originally cost $2.25
sveta [45]

Answer:

c. The price of grapefruits experienced a reduction 6.01 percentage points greater than the price of pineapples.

Step-by-step explanation:

The original price of Pineapples=$5.15

New price of Pineapples=$3.88

<u>Find change in price of Pineapples</u>

Change in price=original price- new price

=5.15-3.88=1.27

The price of Pineapple was reduced by $1.27

<u>% reduction in price</u>

(reduction value/original value) × 100

=\frac{1.27}{5.15} *100=24.66

=24.66%

The original price of grape fruits=$2.25

New price of grape fruits=$1.56

<u>Change in price of grape fruit</u>

Change in price= original price -new price

=2.25-1.56=0.69

<u>% reduction in price of grape fruits</u>

(reduction value/original value)×100

=\frac{0.69}{2.25} *100=30.67

=30.67%

<u>Answers</u>

The fruit that has its price reduced by a greater percentage is grape fruit

How many percentage points greater = 30.67%-24.66% = 6.01 points

5 0
3 years ago
Read 2 more answers
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