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4 years ago

X+8=21 I need helpppp

Mathematics

2 answers:

Mrac [35]4 years ago

8 0

You add 13 and 8 it gets 21 so for X its 13

oksano4ka [1.4K]4 years ago

3 0

X = 13.

Because you want x by itself, to need to remove the +8. So, you must do the opposite to BOTH sides. The opposite of +8 is -8, and 21-8=13. Therefore, x=13.

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Leokris [45]

Answer:

Amount financed

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Step-by-step explanation:

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3 years ago

Solve for x 108 degrees 72 degrees 18 degrees 17 degrees

djverab [1.8K]

Answer:

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3 years ago

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Please help me !!!!!

olganol [36]

√ab=(√a)(√b)

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4 0

3 years ago

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What is 1/8 divided by 2

slavikrds [6]

When dividing 1/8 by 2
we have to first take the reciprocal of 2
reciprocal is when the numerator and denominator are exchanged
2 when written as a fraction is $\frac{2}{1}$
we need to find the reciprocal of $\frac{2}{1}$ which is $\frac{1}{2}$
then
$\frac{1}{2} of \frac{1}{8}$
when 'of' function is used it means to multiply the 2 fractions
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is $\frac{1}{2} * \frac{1}{8} = \frac{1}{16}$
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4 0

4 years ago

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The data below are times (in seconds) recorded when statistics students participated in an experiment to test their ability to d

RoseWind [281]

Answer:

Mean = 58.25

Median = 57.5

Mode = 49

Step-by-step explanation:

We are given the following data set:

55, 51, 74, 61, 67, 60, 49, 49

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{466}{8} = 58.25$

Sorted data:

49, 49, 51, 55, 60, 61, 67, 74

Mode is the entry with highest frequency.

49 appeared two times.

Mode = 49

Formula:

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$

$\text{Median} = \dfrac{55+60}{2} = 57.5$

All these are less than 60 seconds, which indicates that students perceive 1 minute to pass sooner than it actually has.

8 0

3 years ago