I need to know what does “x” equal.

Mathematics

1 answer:

Lisa [10]3 years ago

3 0

Answer:

x = 0.12

Step-by-step explanation:

3 / 5^x = 0.12

to find out what x equals, plug numbers into x to see what it equals

if x = 2, then

3/25 = 0.12

solve

0.12 = 0.12

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A bag contains the following marbles: 4 black marbles, 14 blue marbles, 8 brown marbles, and 20 green marbles. What is the ratio

Diano4ka-milaya [45]

Answer:

14/8 or 14:8

Step-by-step explanation:

blue:brown=14:8

3 0

3 years ago

What is the answer to 45 − (−28) =

Lorico [155]

Step-by-step explanation:

You can also write it as 45+28.

In English, a double negative is when two negative words are used in the same sentence.

A double negative in Math is when you have a scenario like this. For example, 1-(-1) is also equal to 1+1.

So 45+28 is 73.

Hope it helps!

3 0

3 years ago

Read 2 more answers

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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