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3 years ago

8 times what equals 48

Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

7 0

6 be cause 8 times 6 equals 48

aksik [14]3 years ago

6 0

It is 6 times 8 to get 48

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Please answer asap will give the highest points possible

natali 33 [55]

Let cheese wafers = x
chocolate wafers = y

we know they bought 20 total packets so x+y = 20, this can be re-written as x = 20-y

cheese wafers cost 2, so we have 2x
chocolate wafers cost 1, so we have 1y, which is just the letter y

so we know 2x + y = $25

replace x with x=20-y to get:

2(20-y)+y = 25

distribute the parenthesis:

40-2y +y = 25

combine like to terms to get:
40-y = 25

subtract 40 from each side"
-y = -15

divide both sides by -1
y = 15

chocolate wafers was y so they bought 15 chocolate wafers
cheese wafers was x, so they bought 20-15 = 5 cheese wafers

using the substitution method was the easiest way to isolate one of the variables in order to find the solution.

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3 years ago

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The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea

Archy [21]

Answer:

Step-by-step explanation:

Given data:

$\mu = 473$

standard deviation is $\sigma= 28$

As distribution is normal in shape and values are symmetrical

The standard deviation rule says that 95% of observation lies between the second standard deviation of the mean

so, approximately only 5% of observation lies outside the interval and normal shape is symmetric. hence approximately 0.15% of observation lies above the interval

$= \mu + 2\times \sigma$

$= 473 + 2\times 28 = 529$

almost 0.15% of students spent more amount is 529

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3 years ago

All of the following are rational numbers except _

kenny6666 [7]

Answer:

Answer:

3.14159

Step-by-step explanation:

This number is pi. Pi goes on for millions of digits on end.

Step-by-step explanation:

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2 years ago

Brianna has 4 pink bracelets. One third of all her bracelets are pink . How many bracelets does Brianna have ?

Korvikt [17]

Answer:

Total number of bracelets Brianna have are 12 .

Step-by-step explanation:

Let us assume that the total numbers of the bracelets be x .

As given

Brianna has 4 pink bracelets.

One third of all her bracelets are pink .

Than the equation becomes

$\frac{1\times x}{3} = 4$

Simplify the above

x = 4 × 3

x = 12

Therefore the total number of bracelets Brianna have are 12 .

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3 years ago

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Evaluate 3x^2- 9 when x=-2

murzikaleks [220]

Answer:

Step-by-step explanation:

We know x = -2, so we can substitute -2 in for x

3x^2- 9

3*-2^2-9

Solve the exponent first (PEMDAS)

3*4-9

Multiply next

12-9

Subtract

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3 years ago

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