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Natali5045456 [20]
3 years ago
7

Please help me I really need help

Mathematics
2 answers:
elixir [45]3 years ago
8 0

Answer:

56

Step-by-step explanation:

Lowest Common Multiple= 56

IgorLugansk [536]3 years ago
4 0

Answer:

56 seconds

Step-by-step explanation:

One way of doing this is to write out sequences for the number of seconds that elapse in each case.

First bulb:                        0 7 14 28 56 63

Second bulb:  0 8 16 24 32 40 48 56

Both bulbs flicker after 56 seconds.

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A century year such as 1900, 2000, or 2100 is a leap year only if it is a multiple of 400
blondinia [14]
If this is a true or false question, then the answer is true. This is because we technically have 365.2425 days in a year and if you add an extra day every 4 years, you get an average of 365.25. It is A LOT of math, but even though there was an extra day in 1896 and 1904, there was no leap year in 1900 because of the 400 multiple rule.
6 0
3 years ago
Which of the following functions has the greatest y-intercept?
Rina8888 [55]
(2, 8) because 8 is not negative

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3 years ago
Read 2 more answers
Factorise 15 x square - 6 X + 5 Y - 2 please answer me fast who answered will mark as brainleist ​
sweet-ann [11.9K]

Answer:

(3x+1)(5x-2)

Step-by-step explanation:

Given the expression

15x^2-6x+5x-2

Factorize;

3x(5x-2)+ 1(5x-2)

(3x+1)(5x-2)

Hence the factorized form is (3x+1)(5x-2)

4 0
2 years ago
If you flip three fair coins what is the probability that the two first flips will both be heads, and the third flip will be eit
Brrunno [24]

Answer:

The probability that a coin flip is a head or a tail is 0.5. The probability that a coin flip is either a head or a tail is 1. The probability that a three-coin-flip is two heads and a head or a tail is 0.25.

Step-by-step explanation:

5 0
3 years ago
Administrators at a large public high school are interested in their students’ standardized test scores. Last year, the mean sco
ratelena [41]

Answer:

The appropriate hypotheses for performing a significance test is:

H_0: \mu = 51

H_1: \mu > 51

Step-by-step explanation:

Last year, the mean score on the state’s math test was 51. The administrators have trained the teachers in a new method of teaching math hoping to raise the scores on this standardized test this year.

At the null hypothesis, we test if the mean score this year is the same as last year, that is:

H_0: \mu = 51

At the alternate hypothesis, we test if the mean score improved this year from last, that is:

H_1: \mu > 51

The appropriate hypotheses for performing a significance test is:

H_0: \mu = 51

H_1: \mu > 51

8 0
3 years ago
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