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Delvig [45]
3 years ago
6

Cho tập số tự nhiên từ 1 đến 20, lấy ngẫu nhiên ba số. Xác suất để ba số lấy được lập thành cấp số cộng là

Mathematics
1 answer:
pogonyaev3 years ago
7 0
I know right? Hope you have
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A family prepares an emergency kit for their home. The kit contains 63 gallons of drinking water. The​ family's daily drinking w
mr_godi [17]

Answer:

12 days

Step-by-step explanation:

Total gallons of the family's drinking water needs = gallons consumed by children + gallons consumed by adults

3\frac{1}{2} + 1\frac{3}{4} =

Converting to decimals

3.5 + 1.75 = 5.25 = 5\frac{1}{4}

If there are 63 gallons, the water supply would last for :

63 / 5.25 =12 days

6 0
3 years ago
Jimmy know the route from his house to his school, and can name each street along the way.
lesantik [10]
A) Mental Map .......
6 0
3 years ago
There are 446 highlighters in a carton there are 38 cartons. What is the total amount of highlighters in all Carton. Please show
Kisachek [45]
You would do 38 times 446 which equals 16056
8 0
3 years ago
Read 2 more answers
Barbara deposited $300 in the bank. If the bank pays her simple interest at the rate of 4 percent per year, how much money will
grigory [225]

Answer:

309

Step-by-step explanation:

The formula for simple interest is

A = P(1 + rt)

where A is the amount of money in the account

P is the principal invested

r is the interest rate in decimal form

t is the time invested in years

We know

P = 300

r = 4% = .04

t = 9 months = 9 months * 1 year/12 months = .75 year

Substituting into the equation

A = 300(1 + .04*.75)

  =300 (1+.03)

  =300(1.03)

   = 309

4 0
3 years ago
How do you solve: 4/10y+28=0
Bezzdna [24]

Answer:

<h2>y = -70</h2>

Step-by-step explanation:

\dfrac{4}{10}y+28=0\qquad\text{subtract 28 from both sides}\\\\\dfrac{4:2}{10:2}y=-28\\\\\dfrac{2}{5}y=-28\qquad\text{multiply both sides by 5}\\\\5\!\!\!\!\diagup^1\cdot\dfrac{2}{5\!\!\!\!\diagup_1}y=-140\\\\2y=-140\qquad\text{divide both sides by 2}\\\\y=-70

3 0
3 years ago
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