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exis [7]
3 years ago
7

2.

Mathematics
1 answer:
Alex787 [66]3 years ago
4 0
I think the answer is 20
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If the 2/5 of a number exceeds 1/7 of the same number by 36 then the number is
valkas [14]

Answer:

Below in bold.

Step-by-step explanation:

2/5 x - 1/7 x = 36

14/35 x - 5/35x = 36

9x / 35 = 36

x = 35*36 / 9

x = 35*4 = 140 (answer).

5 0
3 years ago
the beer at the electronic store was $81 before taxes the taxes is 7% what is the total of the price with tax
irga5000 [103]
Beer? at an electronic store? but srsly, 81*.07 is 5.67, total is 86.67
7 0
3 years ago
PLEASE HELP!!!!! How many 4-digit numbers divisible by 5, all of the digits of which are even, are there?
saul85 [17]

Answer:

I assume you know Arithmetic Progression .

so, we have to find the first and last 4-digit number divisible by 5

first = 1000 ,  last =  9990

we have a formula,   a_{n} = a + (n-1)d

here, a_{n} is the last 4-digit number divisible by 5.

n is the number of 4-digit even numbers divisible by 5

d is the common difference between the numbers, which is 10 in this case

a is the first 4-digit number divisible by 5

9990 = 1000 + (n-1)*10

899 = n-1

n = 900

Hence, there are 900 4-digit even numbers divisible by 5

7 0
3 years ago
Oliver had to wash thirty-nine short sleeve shirts and forty-seven long sleeve shirts before school. If he had only washed twent
xxMikexx [17]

Answer:

66

Step-by-step explanation:

3 0
3 years ago
Seventh grade > EE.11 Probability of independent and dependent events NED
ella [17]

Step-by-step explanation:

each combination of 2 specific numbers has the same probability. there is no difference in probability between the individual numbers.

remember, a probability is always desired cases over all possible cases.

we have 4 different possible outcomes every time we spin the spinner.

to get a specific number has the probability of 1/4, because we want 1 specific outcome, and have in total 4 different possibilities.

now, we spin a second time. the probability to get a specific number is again 1/4.

but, if we consider both events to be connected, when we want to know the probability to get 2 specific numbers when spinning twice, we have to multiply the individual probabilities :

1/4 × 1/4 = 1/16

so, the probability to land first on a 5, and then secondly on a 2 is 1/16.

the same as for landing first on a 3, and then on a 5.

the same as for landing first on a 4, and then on a 4 (again).

that is because the individual spin results are independent. the result of the first spin does not impact in any way the result of the second spin (in contrary to e.g. pulling multiple cards without returning the previously pulled cards).

8 0
2 years ago
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