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3 years ago

4. The system of equations is grap Explain why the system of equations has no solution.

Mathematics

1 answer:

Anna11 [10]3 years ago

4 0

The system is the incorrect option
If you see closely in number 4

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Which of the following expressions is equal to 1 divided by 16?

MrRissso [65]

$(\frac{1}{2})^{4}=\frac{1}{16}$

4 0

3 years ago

Read 2 more answers

) The density of oil in a circular oil slick on the surface of the ocean at a distance of r meters from the center of the slick

Feliz [49]

Answer:

Therefore the mass of the of the oil is 409.59 kg.

Step-by-step explanation:

Let us consider a circular disk. The inner radius of the disk be r and the outer diameter of the disk be (r+Δr).

The area of the disk

=The area of the outer circle - The area of the inner circle

= $\pi (r+\triangle r)^2- \pi r^2$

$=\pi [r^2+2r\triangle r+(\triangle r)^2-r^2]$

$=\pi [2r\triangle r+(\triangle r)^2]$

Since (Δr)² is very small, So it is ignorable.

∴ $A=2\pi r\triangle r$

The density $\delta (r)= \frac{40}{1+r^2}$

We know,

Mass= Area× density

$=(2r \pi \triangle r)(\frac{40}{1+r^2}})$

Total mass $M=\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i$

Therefore

$\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i=\int_0^5 \frac{80r\pi }{1+r^2}dr$

$=40\pi[ln(1+r^2)]_0^5$

$=40\pi [ln(1+5^2)-ln(1+0^2)]$

$=40\pi ln(26)$

= 409.59 kg (approx)

Therefore the mass of the of the oil is 409.59 kg.

3 0

2 years ago

Which expression is equivalent to (-1.3x-4.5) - (-2.1x+3.6)?

timurjin [86]

Equivalent expressions are expressions with the same value.

The equivalent expression of $(-1.3x - 4.5)- (-2.1x + 3.6)$ is $0.8x -8.1$

Given that:

$(-1.3x - 4.5)- (-2.1x + 3.6)$

Open brackets

$(-1.3x - 4.5)- (-2.1x + 3.6) = -1.3x - 4.5+ 2.1x - 3.6$

Collect like terms

$(-1.3x - 4.5)- (-2.1x + 3.6) = -1.3x + 2.1x - 4.5 - 3.6$

$(-1.3x - 4.5)- (-2.1x + 3.6) = 0.8x -8.1$

Hence, the equivalent of $(-1.3x - 4.5)- (-2.1x + 3.6)$ is $0.8x -8.1$

Read more about equivalent expressions at:

brainly.com/question/18257981

6 0

2 years ago

Which of the following rules could represent the function shown in the table?

MariettaO [177]

Answer:

f(x) = 2x+1

Step-by-step explanation:

Equation in slope intercept form y = mx + b where m = slope b = y-intercept

To find slope ,

m = (y2-y1)/(x2 - x1)

m = (3 - 1) / (1 - 0)

m = 32/1

m = 2

y-intercept b = 1

In this case y = 2x + 1 or f(x) = 2x+1

6 0

2 years ago

A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 inches, the

inna [77]

Yes the company is making them correct boss

7 0

3 years ago