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Papessa [141]
3 years ago
6

Find the 21st term in the arithmetic sequence, 3,7 11, 15, 19,

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
6 0

Answer:

83

Step-by-step explanation:

keep adding 4 til the 21st number.

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A’B’C’ is a dilation image if ABC which is the correct description of the dilation
Sav [38]

Answer:

The dilation is an enlargement

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is equal and this ratio is called the scale factor

In this problem Triangles A'B'C' and ABC are similar by AA Similarity Postulate

Let

z------> the scale factor

so

z=\frac{A'C'}{AC}

substitute the values

z=\frac{2+8}{2}

z=\frac{10}{2}=5

The scale factor is greater than 1

therefore

The dilation is an enlargement

3 0
3 years ago
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Which best explains the relationship between lines a and b? They are skew and will never intersect. They are parallel and will n
r-ruslan [8.4K]

Answer:

They are skew and will never intersect.

Step-by-step explanation:

see attachment for the missing figure

Lines a and b are skew lines since they are not parallel and they do not intersect. The explanation that they don't intersect  is on the grounds that each line is in a parallel plane. Parallel means heading off to the same direction but neither converging nor diverging.

5 0
3 years ago
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) Evaluating a polynomial limit analytically You should have learned by now the process for finding the derivative of a polynomi
wolverine [178]

Answer:

This code or is program to find a given value of derivative of  a polynomial.

Step-by-step explanation:

We know already how to apply or make the procedures mathematically talking so this short program will eventually help you how to find logic.

// libraries

#include <stdio.h>

#include <conio.h>

//use to control floating elements

float poly(float a[], int, float);

//main

int main()

{

// Enter the degree of polynomial equation

float x, a[10], y1;

int deg, i;

printf("Enter the degree of polynomial equation: ");

scanf("%d", &deg);

printf("Ehter the value of x for which the equation is to be evaluated: ");

// Enter the coefficient of x to the power

scanf("%f", &x);

for(i=0; i<=deg; i++)

{

 printf("Enter the coefficient of x to the power %d: ",i);

 scanf("%f",&a[i]);

}

// The value of polynomial equation for the value of x

y1 = poly(a, deg, x);

 

printf("The value of polynomial equation for the value of x = %.2f is: %.2f",x,y1);

 

return 0;

}

/* function for finding the value of polynomial at some value of x */

float poly(float a[], int deg, float x)

{

float p;

int i;

 

p = a[deg];

 

for(i=deg;i>=1;i--)

{

 p = (a[i-1] + x*p);

}

 

return p;

}

8 0
2 years ago
The surface area of which composite figure is the sum of the areas of eight triangular faces?
ycow [4]

The answer is B)Two rectangular pyramids joined at two congruent lateral faces

4 0
3 years ago
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I will give brainliest to whoever can help!
son4ous [18]

Answer:

1)open 2)false 3)5

Step-by-step explanation:

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