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kupik [55]
4 years ago
8

Which statements are true? Select all that apply.

Mathematics
2 answers:
Luden [163]4 years ago
7 0

To convert Hectometers to kilometers you divide by 10:

8.7 / 10 = 0.87 kilometer

8.7 hectometers = 87 kilometers = FALSE.

Multiply centigrams by 10 to get milligrams:

4.02 x 10 = 40.2

4.02 centigrams = 40.2 milligrams = TRUE.

Milliliter to liter:

Divide milliliters by 1000:

0.001 / 1000 = 0.000001

0.001 milliliter = 0.1 liter = FALSE.

Meter to kilometer:

Divide meters by 1000:

0.004 / 1000 = 0.000004

0.004 meter = 0.000004 kilometer = TRUE.

stellarik [79]4 years ago
3 0

Answer:

B and D

Step-by-step explanation:

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I'm sure this is it I got it right on mine
kolezko [41]

Answer: what are you talking about????????

Step-by-step explanation:

6 0
3 years ago
An iron ion has 26 protons and 23 electrons electrons have a charge of negative 1 and protons have a charge of positive one what
Elodia [21]

Answer:

The charge on the ion is +3.

Step-by-step explanation:

We are given the following in the question:

Number of protons = 26

Number of electrons = 23

Charge on 1 proton = +1

Charge on one electron = -1

We have to calculate the total charge on the ion.

Total charge on ion =

=(Number oof proton)(Charge of proton) + (Number of electron)(Charge of electron)

=26(+1) + (23)(-1)\\=26-23\\=+3

Thus, the charge on the ion is +3.

6 0
3 years ago
PLEASE HELP!!!
viktelen [127]

The answer is 3/5.


\frac{1}{3} *\frac{3}{5} =\frac{3}{15} \\ \\ \frac{3}{15} *\frac{3}{5} =\frac{9}{75}


Continue this pattern and you'll see that it follows this geometric sequence

5 0
3 years ago
Read 2 more answers
7<br> HAI DRIVIS 350 MILES IN 4 1/2<br> HOURS. HOW FAST WAS HE<br> GOING IN MIES PER HOUR?
Firlakuza [10]

Answer:

77.78 mph

Step-by-step explanation:

[1] So we know that someone is driving 350 miles and it takes / took them 4 1/2 hours. I am going to change 4 1/2 to 4.5 for the sake of making it easier.

[2] Miles per hour, is, as it says, miles per hour. Aka, \frac{miles}{hour} (your time is almost always on the bottom / the y)

[3] So, that being said, to solve you will but 350 over 4.5 like this: \frac{350}{4.5} which calcuates to arounddd 77.78!

(I hope this is correct, I was slightly confused by the wording. Have a nice day!)

7 0
3 years ago
Milk is delivered to a chain of regional supermarkets once a week. If the weekly volume of sales in thousands of gallons is a ra
sleet_krkn [62]

Answer:

The chain of supermarkets must order 428.1 gallons of milk.

Step-by-step explanation:

Let's define the random variable X.

X : ''Weekly volume of sales in thousands of gallons''

X is a continuous random variable.

The probability density function for X is

f(x)=7(1-x)^{6} when 0 < x < 1

f(x)=0   Otherwise.

Let's denote as ''a'' to the quantity of milk for the question.

We are looking for :

P(X>a)=0.02

P(X>a)=\int\limits^1_a {f(x)} \, dx

P(X>a)=\int\limits^1_a {7(1-x)^{6}} \, dx

P(X>a)=(1-a)^{7}

(1-a)^{7}=0.02

a=1-\sqrt[7]{0.02}

a=0.4281

a is in thousands of gallons, therefore the chain of supermarkets must order  

428.1 gallons of milk in order to satisfy the question.

7 0
3 years ago
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