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3 years ago

PLEASE HELP WITH YEAR 8 MATH

Mathematics

1 answer:

Luden [163]3 years ago

7 0

Answer:

a. x=40 b. x=19

Step-by-step explanation:

a. 40+40= 80

80+10=90

90=right triangle

b. 3 x 19= 57

57+19

76+14= 90

90=right triangle

You might be interested in

How many different factors does the number 40 have?

Archy [21]

Factors: 1, 2, 4, 5, 8, 10, 20, 40

7 0

3 years ago

9 is a factor of which number? <br> 12<br> 18<br> 23<br> 28

Angelina_Jolie [31]

Answer:

The answer is 18.

Step-by-step explanation:

9x2=18

4 0

3 years ago

Two of the vertices of a rectangle are (1, −6) and (−8, −6). If the rectangle has a perimeter of 26 units, what are the coordina

pantera1 [17]

Answer: $(x_1,y_1)=(1,-2)$

$(x_2,y_2)=(-8,-2)$

Step-by-step explanation:

Given

Co ordinates of vertices(1,-6) and (-8,-6)

When two points is given then Length of two points is given by

$L=\sqrt{\left ( x_2-x_1\right )^2+\left ( y_2-y_1\right )^2}$

$L=\sqrt{\left ( 1-\left ( -8\right )\right )^2+\left ( -6+6\right )^2}$

$L=\sqrt{9^2}=9 units$

Perimeter of rectangle is =26 units

Let the other side be x

thus

$2\left ( x+9\right )=26$

x+9=13

x=4 units

therefore to get the other two co ordinates

such that the length of that side is 4 units is

$(x_1,y_1)=(1,-2)$

$(x_2,y_2)=(-8,-2)$

Horizontal distance will remain same only vertical distance will change in given co ordinates to obtain the remaining two co ordinates

To verify the above two distance between two points must be 13 units

6 0

3 years ago

Someone plz help me!!

marta [7]

Answer:

P'=(0,3)

Step-by-step explanation:

P'=(-5+5, 7-4)

8 0

3 years ago

3. What is the slope of the line that contains the

dlinn [17]

Answer:

I think the answer would be -1/2 or D.

Step-by-step explanation:

Use this formula for calculating slope : y2-y1 / x2 - x1

1. label the pairs, 1 and 2

(-6, 1) - ( x1, y1 ) or (4,-4) - (x1, y1)

(4,-4) - ( x2, y2) (-6,1) - (x2, y2)

(the order does not matter)

2. Than plug in your numbers

y2-y1 / x2 -x1 y2-y1 / x2 -x1

-4 - 1 / 4 - (-6) or 1 - (-4) / -6 - 4

= -5/10 or -1/2 = - 5/-10 or -1/2

im only in eight grade so i did my best explaining , and this hope it helps :)

7 0

3 years ago