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3 years ago

6+4*(5-7)^2 need answer with worked out problem

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

6 0

6+4• (5-7)^2
(5-7)^2
-2^2
4
6+4+4
=14

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the graph shows the following equation. what are the solution to the system y = 4x + 21 and y =-(1/3)x+4+6

coldgirl [10]

Answer:

(-6,3) and (-4,-5) are the solutions to the system

Step-by-step explanation:

The solution to a system of equations are the point(s) where the graphes intersect. On the graph is a linear function and an exponential. Because of the curve in the exponential, the graph has two solutions at (-6,3) and (-4,-5).

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4 years ago

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neonofarm [45]

Answer

2(-10z+1) or 20z+2

Step-by-step explanation:

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3 years ago

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Ainat [17]

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Step-by-step explanation:

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3 years ago

Multiple-Choice Integration, Picture Included, Please Include Work

ValentinkaMS [17]

$\displaystyle\int_0^2\sqrt{4-x^2}\,\mathrm dx$

Recall that a circle of radius 2 centered at the origin has equation

$x^2+y^2=4\implies y=\pm\sqrt{4-x^2}$

where the positive root gives the top half of the circle in the x-y plane. The definite integral corresponds to the area of the right half of this top half. Since the area of a circle with radius $r$ is $\pi r^2$ , it follows that the area of a quarter-circle would be $\dfrac{\pi r^2}4$ .

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Another way to verify this is to actually compute the integral. Let $x=2\sin u$ , so that $\mathrm dx=2\cos u\,\mathrm du$ . Now

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Recall the half-angle identity for cosine:

$\cos^2u=\dfrac{1+\cos2u}2$

This means the integral is equivalent to

$\displaystyle2\int_0^{\pi/2}(1+\cos 2u)\,\mathrm du=2u+\sin2u\bigg|_{u=0}^{u=\pi/2}=\pi$

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3 years ago

The expression 25x2 - 81 can be rewritten as (5x - 9)(5x + 9). (5x - 9) is a ____ of 25x2 - 81. A) divisor B) factor C) multiple

stich3 [128]

Ans: B
The method (a^2-b^2) is considered as one of the many ways of factorisation.

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4 years ago