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3 years ago

Help please , I need an answer quickly if possible

Mathematics

2 answers:

Semenov [28]3 years ago

6 0

Answer:

The answer is B

RideAnS [48]3 years ago

3 0

Answer:

(f-g)(x) = - 3x^2 -x - 4

Step-by-step explanation:

(f-g)(x) = - 4x^2 -6x -1 - (-x^2 -5x + 3)

(f-g)(x) = - 4x^2 -6x -1 + x^2 + 5x - 3

(f-g)(x) = - 3x^2 -x - 4

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The solution of the equation 7x+2=23 is ?

ikadub [295]

7x+2=23
Move 2 to the other side
7x=23-2
7x=21

To isolate the x divide both sides by 7
x=3

To check plug the value of x back in

7(3)+2=23
21+2=23
23=23

3 0

3 years ago

Read 2 more answers

The net of a square pyramid is shown below: Net of a square pyramid showing 4 triangles and the square base. The square base has

Neko [114]

Given:

The dimensions:

Square pyramid

Square base: 2x2

1 out of 4 triangles: 1/2x2x5

4 triangles: 2x2x5

To find:

The SURFACE AREA of the square pyramid

Find answer:

Step 1

Find the area of the square base -

Square base:

SA = L x W

= 2 x 2

= 4

The surface area of the square is 4 square inches

Step 2

Find the area of the 4 Triangles:

We will use a different formula here, to find 1 triangle, we will have to do:

$SA = \frac{1}{2} *B*H$

To find 2 triangles, we will do:

$SA = B*H$

But to find 4 triangles in just 1 step, we will do:

$SA=2*B*H$

Let's do it!

$SA = 2*2*5\\=2*10\\=20$

The surface area of the 4 triangles are 20 square inches

Step 3

Add answers to get FINAL ANSWER

Easy!

20+4=24

<h2>Hence, the Surface Area of the Square Pyramid is 24 square inches</h2>

4 0

2 years ago

What does 5 x 5/6 equal?

earnstyle [38]

Answer:

4.166666.... which is equal to 25/6

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Help me please i don't know what i'm doing please help

UNO [17]

Answer: -1/9

Step by step explanation:

The common difference of an arithmetic sequence can be found by picking 2 consecutive terms, and subtracting the second from the first. For example, if I chose the terms 2 and 1 8/9, I would find the common difference by:

1 8/9 - 2, which is equal to -1/9.

You can confirm this by picking another pair of consecutive terms. Let's pick 1 7/9 and 1 2/3:

1 2/3 - 1 7/9 = -1/9, as 1 2/3 = 1 6/9, so 1 6/9 - 1 7/9 = -1/9

8 0

3 years ago

Select the correct answer.

andrew-mc [135]

Answer:

$v=\sqrt{\frac{E}{m}}$

Step-by-step explanation:

The formula is given as:

$E=mv^2$

We need to solve this formula for v, that means that v to one side and let it be solved in terms of the other variables (E and m). First, we isolate v:

$E=mv^2\\\frac{E}{m}=\frac{mv^2}{m}\\\frac{E}{m}=v^2$

To isolate v, and eliminate the "square", we need to take square roots of both sides, that will give us v in terms of the other variables:

$\frac{E}{m}=v^2\\\sqrt{\frac{E}{m}}=\sqrt{v^2}\\\sqrt{\frac{E}{m}}=v$

Putting v to left side (convention), we finally have:

$v=\sqrt{\frac{E}{m}}$

7 0

3 years ago