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2 years ago

I Need Help!!! I’ll give brianliest and 20 points!!!

Mathematics

2 answers:

Greeley [361]2 years ago

8 0

I would go with d but I am not 100% sure

miskamm [114]2 years ago

7 0

I’m pretty sure it’s D, “Figures M and N are parallelograms.”

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Work out the surface area of the solid cuboid. 3cm 4cm 5cm

Zarrin [17]

Answer: 94 cm^3.

Step-by-step explanation: You use the formula 2(ab+bc+ca). You plug in 3, 4, and 5 to get 94.

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2 years ago

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Show that y2+ x-3 =0 is an implicit solution to dy/dx =-1/ (2y) on the interval (- [infinity] , 3)

Sedaia [141]

Answer:

Implicit function

$\frac{d y}{d x} = \frac{-1}{2y}$

Step-by-step explanation:

Explanation:-

Given y² + x - 3=0 ...(i)

Differentiating equation (i) with respective to 'x', we get

$2 y \frac{d y}{d x} +1 = 0$

⇒ $2 y \frac{d y}{d x} = -1$

⇒ $\frac{d y}{d x} = \frac{-1}{2y}$

$\frac{d y}{d x} = \frac{-1}{2 (3)}$

$\frac{d y}{d x} = \frac{-1}{6}$

4 0

3 years ago

(50 POINTS) The figure is transformed as shown in the diagram. Describe the transformation. A) dilation, then reflection B) refl

Helga [31]

Answer:

Hi there I was just working on this question on UsaTestPrep and idk if the answer is really correct but here: C: reflection then rotation.

Step-by-step explanation:

Extra Info:

Dilation is when the shape changes in size, which doesn't happen.

Translation is when it just moves across. It may look like that is happening here, but I'll explain.

The triangle is first reflected along the line . Imaging putting a mirror on the x=0 line (the y axis, basically), and you'd see 1 to 2.

Then, it is rotated around the point . Get a bit of tracing paper, draw over 2, and then, holding the tracing paper down at (works well with a pencil), rotate it round and you will find it fits perfectly over 3.

Also is this the diagram?

6 0

3 years ago

The function f is defined on the real numbers by f(x) = x + 2 What is the value of f(-3)?

kvasek [131]

Answer:

-1

Step-by-step explanation:

We can plug in -3 for x and solve:

f(-3) = -3 + 2

= -1

6 0

2 years ago

Just a quick question:

Vinvika [58]

You need to subtract the rate of decay from 1.

The equation would be 800(1-0.2)^x = 800(0.80)^x

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2 years ago