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V125BC [204]
3 years ago
7

Factorisation of ax^2 + bx + c

Mathematics
1 answer:
tigry1 [53]3 years ago
6 0

Answer:

-5(t+3)(t-6)

Step-by-step explanation:

-5²+15+90

= -5(t²-3t-18)

= -5(t+3)(t-6)

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Look at the angles for all regular polygons. As the number of sides increases, do the measures of the angles increase or decreas
Verdich [7]

Answer:

As the number of sides increases, the measures of the angles increase

see the explanation

Step-by-step explanation:

we know that

The measure of the interior angle in a regular polygon is equal to

x=\frac{(n-2)}{n}(180^o)

where

n is the number of sides of the regular polygon

x is the measure of the interior angle in a regular polygon

we have that

<u><em>Examples</em></u>

<em>A triangle</em>

n=3 sides

x=\frac{(3-2)}{3}(180^o)=60^o

<em>A square</em>

n=4 sides

x=\frac{(4-2)}{4}(180^o)=90^o

<em>A pentagon</em>

n=5 sides

x=\frac{(5-2)}{5}(180^o)=108^o

<em>A hexagon</em>

n=6 sides

x=\frac{(6-2)}{6}(180^o)=120^o

so

n ----> 3,4,5,6...

x ----> 60°,90°,108°,120°,...

As the number of sides increases, the measures of the angles increase

The pattern is x=\frac{(n-2)}{n}(180^o)

5 0
3 years ago
A circle has a radius of 7 cm. What is its circumference?
Arturiano [62]

Answer:

43.96 is pretty sure

Step-by-step explanation:

C=2πr

c= 2π(7)

using 3.13 as pie

c= 2(3.14)(7)

43.96

8 0
3 years ago
I need to know how to solve this problem. it just says perform indicated operation
Alex Ar [27]
When dividing, you can flip the second fraction and multiply the two, giving you 5x/9 * 15x^2/18, which is 25x^3/54
3 0
3 years ago
How to add how to a negative and a negative
Softa [21]

Answer:example: -10 + -3 = -13

Step-by-step explanation:

Just add the two numbers then put the negative sign before it. (for addition only)

5 0
3 years ago
Line pq is the perpendicular bisector of line MN, what is QN?
GREYUIT [131]
We know that
if PQ <span>is the perpendicular bisector of line MN
then
MQ=QM
and
NP=MP
so
6x+1=10x-17----------> 10x-6x=17+1-----> 4x=18---------> x=18/4----> x=4.5

QN=2x+5-----> QN=2*4.5+5-----> QN=14

the answer is
QN is 14</span>
4 0
3 years ago
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