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Ilya [14]
3 years ago
12

Are you guys all in k12? I’m an 8th grader

Mathematics
2 answers:
antoniya [11.8K]3 years ago
6 0
I am in 6th grade honors
masya89 [10]3 years ago
6 0
Im a 9th grader. trust me high school is so much fun.
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What is the volume of the pyramid in cubic millimeters? a rectangular pyramid with a base of 21 millimeters by 18 millimeters an
grandymaker [24]

The volume of the rectangular pyramid with the given dimensions is: 1,890 cubic millimeters.

<h3>What is the Volume of a Rectangular Pyramid?</h3>

Volume of rectangular pyramid = 1/3(length × width × height)

Given the following:

  • Length = 21 mm
  • Width = 18 mm
  • Height = 15 mm

Volume of the rectangular pyramid = 1/3(21 × 18 × 15)

Volume of rectangular pyramid = 1,890 cubic millimeters.

Learn more about volume of rectangular pyramid on:

brainly.com/question/924442

#SPJ4

8 0
3 years ago
Factorise <br> a) 3x^2-7x+2<br> b)2x^2-x-3<br> c)3x^2-16x-12
Luba_88 [7]

Answer: Answers are in the steps read carefully!

Step-by-step explanation:

A) 3x^2 - 7x + 2 To factor this polynomial, you have to find two numbers that their product is 6 and their sum is -7.  The numbers -1 and -6 works out because -6 times -1 is 6  and -6 plus -1 is -7.

Now rewrite the polynomial as

3x^2 - 1x - 6x + 2   Now group it  

(3x^2 - 1x) (-6x+2)  Factor it by groups

x (3x -1)  -2(3x -1)    Now factor out 3x-1  

(3x -1) (x-2)  Done!    

B)  2x^2 - x -3     Now the same way.You will have two numbers that  their product is -6 and their sum is -1. You may be wondering how I get -6 .I get -6 by multiply the leading coefficient  2 by the constant -3.  The numbers -3 and 2 works out. Because -3 times 2 is -6 and -3 plus 2 is -1.

 Rewrite the polynomial as

2x^2 +2x - 3x -3     GRoup them and factor them

(2x^2 + 2x)  (-3x-3)  

2x(x+1) -3(x+1)  Factor out x+1

(x+1) (2x -3) Done!  

C) 3x^2 - 16x - 12   Find two numbers that their product is -36 and their sum is -12. The numbers -18 and 2 works out because -18 times 2 is -36 and -18 plus 2 is -16.

Rewrite the polynomial

3x^2 +2x -18x - 12   GRoup them

 (3x^2 + 2x)   (-18x - 12)   Factor them

x (3x +2) -6(3x +2)  Factor out 3x+2

(3x+2) (x -6)  Done !

6 0
4 years ago
The graph below shows the height of a kicked soccer ball f(x), in feet, depending on the distance from the kicker x, in feet: Pa
Advocard [28]

the complete question in the attached figure

part A

the x intercept 0 is the point where the ball was hit, the x intercept 20 is the point where the ball fell back to the ground, 20 feet away from the kicker.

<span>the function is increasing in the interval x∈(0, 10) and decreasing in x∈(10, 20) </span>
this means that the height is increasing in the interval  (0, 10) and decreasing as x goes through the interval (10,20)
the distance from the kicker is increasing during the whole interval (0, 20)

part B

the rate of change represents the slope of the secant line from A to B. It approximates the rate at which f(x) decreases or increases in the interval 

x =[A, B]

from x = 22 to x = 26-------------- > the function does not exist


5 0
3 years ago
182.6 is 83% of what number?
GarryVolchara [31]
I think the answer is <span>x=220</span>
7 0
3 years ago
What is the initial value, and what does it represent?
inn [45]

Answer:

A. The initial value is 100; it represents money left over from last year's fundraiser

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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