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3 years ago

3 is what percent of 90?

Mathematics

2 answers:

Setler79 [48]3 years ago

8 0

Answer:

2.7

Step-by-step explanation:

Just trust me, im right

Eddi Din [679]3 years ago

3 0

Percentages
3% of 90 = 2.7 Dec 24 08:19 UTC (GMT)
1.3% of 50 = 0.65 Dec 24 08:19 UTC (GMT)
5% of 1,650 = 82.5 Dec 24 08:19 UTC (GMT)
61% of 1.618 = 0.98698 Dec 24 08:19 UTC (GMT)
76.56% of 309 = 236.5704

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Need help with solving a 2x2 system of linear equations<br><br> PLEASE HELP ME

Yakvenalex [24]

$\bf \begin{array}{llll}
-5x-y=5\\
-5x+y=5\\
-------\\
-10x+0=10
\end{array}\implies -10x=10\implies x=-1$

so if x = -1, let's plug that in the second equation

-5(-1)+y = 5
5+y = 5
y = 0

7 0

3 years ago

P and q are complex numbers such that ∣p∣ = 2/5 x + 2 , ∣q∣ = −3/4 x − 1 , and ∣p+q∣ = 2x + 4 .

Leya [2.2K]

Answer: (b)

Step-by-step explanation:

Given

$\left | p\right |=\dfrac{2}{5}x+2$

$\left | q\right |=\dfrac{-3}{4}x-1$

$\left | p+q\right |=2x+4$

for two complex number, $z_1,z_2$

Apply the above the property

$\Rightarrow 2x+4\leq \dfrac{2}{5}x+2-\dfrac{3}{4}x-1\\\\\Rightarrow 2x+4\leq \dfrac{8x-15x}{20}+1\\\\\Rightarrow 2x+3\leq -\dfrac{7x}{20}\\\Rightarrow x\leq -\dfrac{60}{47}$

Also, the absolute value of each complex number must be greater than or equal to zero

$\text{Case-1}\\\\\Rightarrow \dfrac{2}{5}x+2\geq 0\\\\\Rightarrow x\geq -5\\\\\text{Case-2}\\\\\Rightarrow -\dfrac{3}{4}x-1\geq 0\\\\\Rightarrow x\leq -\dfrac{4}{3}\\\\\text{Case-3}\\\\\Rightarrow 2x+4\geq 0\\\Rightarrow x\geq -2$

Taking the intersection of the above values of x, we get

$x\in [-2,-\dfrac{4}{3}]$

8 0

3 years ago

Another oneeeeeeeeeeeeeee

mixer [17]

Answer: C, 2 x 2 x 2 x 2 x 2 x 3

Step-by-step explanation: Hope this helps!

7 0

2 years ago

Read 2 more answers

What is the explicit formula for the geometric sequence: 224, 112, 56, 28, ... .

UkoKoshka [18]

Answer:

a_n=224(1/2)^n-1

Step-by-step explanation:

In this geometric sequence, we can see that the common ratio is 1/2 and the 1st term is 224. using this information, we can plug it into the geometric series formula and we get a_n=224(1/2)^n-1.

7 0

3 years ago

A box contains 5 plain pencils and 5 pens. A second box contains 3 color pencils and 7 crayons. One item from each box is chosen

kotegsom [21]

The events 'select a plain pencil' and 'select a color pencil' are independent. therefore the probability of both occurring is the product of their probabilities:
$P(plain\ pencil\ and\ color\ pencil)=\frac{5}{10}\times\frac{3}{10}=\frac{3}{20}$
The answer is 3/20 or 0.15.

8 0

4 years ago