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3 years ago

Indicate whether or not 1/√2 belongs to each set of numbers

Mathematics

1 answer:

Oksi-84 [34.3K]3 years ago

6 0

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Hey mate Whole numbers is your Answer

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-8-(-5) = ? Lol ik this is probably easy just wanna make sure my answer is right

Nezavi [6.7K]

Answer:

-3

Step-by-step explanation:

The answer is this

-8(-5) = -3

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3 years ago

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Licemer1 [7]

The perimeter of ADC is 9.5 cm.

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3 years ago

A box contains $7.45 in nickels, dimes, and quarters. There are 43 coins in all, and the sum of the numbers of nickels and dimes

kari74 [83]

Answer:

Number of nickels = 6

Number of dimes = 14

Number of quarters = 23

Step-by-step explanation:

Total number of coins = 43

Let number of nickels = n

Let number of dimes = d

Let number of quarters = q

$n+d+q=43 ...... (1)$

Money in n nickels = $n \times 0.05$

Money in d dimes = $d \times 0.10$

Money in q quarters = $q \times 0.25$

Total money = $7.45

$0.05n +0.10d+0.25q = 7.45\\\Rightarrow 5n +10d+25q = 745 .... (2)$

The sum of the numbers of nickels and dimes is 3 less than the number of quarters.

i.e.

$n+d=q-3$

Let us put the value in (1):

$q-3+q=43\\\Rightarrow 2q= 43+3\\\Rightarrow q =23$

Putting the value of q in (1) and (2):

n+d = 20 .... (3)

$5n+10d+575 =745\\\Rightarrow 5n+10d =170\\\Rightarrow n+2d =34 .... (4)$

(4) - (3):

d = 14

Now, from (3):

n = 6

Number of nickels = 6

Number of dimes = 14

Number of quarters = 23

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3 years ago

A stock has returned of -$1.26 per day . Right and solve an equation to find the number of days until the total return is -$10.0

Schach [20]

Answer:

set x=day

-1.26x=-10.08

x=8 days

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3 years ago

Nina is training for a marathon. She can run 4 1/2 kilometers in 1/3 of an hour. At this pace, how many kilometers can Nina ru

natima [27]

Answer:

$\frac{9}{2} = \frac{1}{3} hour$

$x = \frac{3}{3}$

$x = \frac{ \frac{9}{2} \times \frac{3}{3} }{ \frac{1}{3} }$

$\frac{27}{6} \times \frac{3}{1} = \frac{27}{2} = 13 \frac{1}{2}$

4 0

3 years ago

Indicate whether or not 1/√2 belongs to each set of numbers​

Indicate whether or not 1/√2 belongs to each set of numbers