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4 years ago

Solve each equation of 23=7x

Mathematics

1 answer:

solniwko [45]4 years ago

8 0

23=7x
Divide both sides by 7
23/7=x
That is the only answer to this equation

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Suppose that commercial airplane crashes in a certain country occur at the rate of 2.5 per year. what is the probability that fo

lesya [120]

The poisson distribution applies here.
$\lambda=2.5$
$P(X=4)=\frac{e^{-2.5}\times2.5^{4}}{4!}=0.134$

4 0

3 years ago

4.75x10^-7 in standard form

SashulF [63]

That is in standard form except the -7 would be written as a power next to the 10. As an ordinary number it is 0.000000475

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3 years ago

You must be at least 5 ft tall to ride the roller coaster? write an inequality that represents this statement

joja [24]

Answer:

5ft > can ride the roller coaster??

Step-by-step explanation:

im not 100% sure what u mean

3 0

2 years ago

Read 2 more answers

Multiply (2x-5)(3x^2-4x+2)

fgiga [73]

Answer:

$\large\boxed{(2x-5)(3x^2-4x+2)=6x^3-23x^2+24x-10}$

Step-by-step explanation:

$\text{Use FOIL:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(2x-5)(3x^2-4x+2)\\\\=(2x)(3x^2)+(2x)(-4x)+(2x)(2)+(-5)(3x^2)+(-5)(-4x)+(-5)(2)\\\\=6x^3-8x^2+4x-15x^2+20x-10\\\\\text{combine like terms}\\\\=6x^3+(-8x^2-15x^2)+(4x+20x)-10\\\\=6x^3-23x^2+24x-10$

7 0

3 years ago

What is the value of y? NU=9, NM= 3, MT= 6, TN= y

nevsk [136]

Answer:

6 $\sqrt{3}$

Step-by-step explanation:

We have to use Pythagoras' identity twice to find y

The square on the hypotenuse is equal to the sum of the squares on the other two sides.

In right triangle MUT to find TU

TU² + 3² = 6², that is

TU² + 9 = 36 ( subtract 9 from both sides )

TU = 27 ( take the square root of both sides )

TU = $\sqrt{27}$ = $\sqrt{9(3)}$ = 3 $\sqrt{3}$

In right triangle NUT to find y

y² = 9² + (3 $\sqrt{3}$ )² = 81 + 27 = 108 ( take the square root of both sides )

y = $\sqrt{108}$ = $\sqrt{36(3)}$ = 6 $\sqrt{3}$

3 0

3 years ago