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3 years ago

What is the value of the missing variable? 2x+4 = 20

Mathematics

2 answers:

Gemiola [76]3 years ago

7 0

Answer:

x = 8

Step-by-step explanation:

Given

2x + 4 = 20 ( subtract 4 from both sides )

2x = 16 ( divide both sides by 2 )

x = 8

Gemiola [76]3 years ago

3 0

Answer:

the answer is X=8

Step-by-step explanation:

2(8)+4=20

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What is the solution to -4|-2x+6| = -24

AURORKA [14]

The answer is x1= 0, x2= 6

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4 years ago

Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right e

DENIUS [597]

Hello,

Reminders:
$$\sum_{i=1}^{n} i= \dfrac{n(n+1)}{2}$


$
$$ \sum_{i=1}^{n} i^2= \dfrac{n(n+1)}{2}$

$
$$ \sum_{i=1}^{n} i^3= \dfrac{n^2(n+1)^2}{4} $
$

$n=6\\
x_{0}=0\\
x_{n}=3\\
\Delta= \dfrac{x_n-x_0}{n}=0.5\\

$
$x_{i} =0+\Delta*i= \frac{i}{2}$

$\sum_{i=1}^{n}\ \Delta*f(x_{i})=\sum_{i=1}^{6}\ \dfrac{i^3/8-6i}{2}$
$$= \dfrac{1}{2}\sum_{i=1}^{6} (\frac{i^3}{8} -6i)=\dfrac{1}{16}*\frac{(6*7)^2}{4}- \frac{9*7}{2}= -3.9575$

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xls

8 0

3 years ago

Read 2 more answers

What is the measure of ∠x?

goldenfox [79]

Answer:

117+x=180°(sum of straight line)

Step-by-step explanation:

x=180-117

x=63

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3 years ago

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Suzy has a collection of quarters and dimes. Together she has 44 coins worth $6.95. How many quarters and how many dimes does Su

OverLord2011 [107]

X = quarters
y = dimes

0.25x + 0.10y = 6.95 or 25x + 10y = 695
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25x + 10y = 695
25 (x + y = 44)

25x + 10y = 695

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and 17 quarters

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3 years ago

Hello, can you please review attached and help me with the answer ?

Elis [28]

Answer:

(a). P(x) = 8x - 112,000

(b). $80,000

Step-by-step explanation:

(a). P(x) = R(x) - C(x)

P(x) = 50x - 112,000 - 42x

P(x) = 8x - 112,000

(b). P(24,000) = 8(24,000) - 112,000 = 80,000

----------------------------------------

(a). P(x) = 8x - 112,000

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2 years ago