Ch mensuration of class 8
add the following

8x²+ 7xy - 6y² +17, -3xy+4x² +2y² -5 and 2xy +14-Y²-4x ²


Answer me please ​

The statements that are true regarding the diagram given are:

The triangle sum theorem states that all the three interior angles in a triangle have a sum of 180 degrees all together.

Thus, in the diagram given, the statements that are all true are:

m∠3 + m∠4 = 180° (angles on a straight line)

m∠4 = m∠1 + m∠2 (external angle theorem)

m∠1 + m∠2 + m∠3 = 180° (triangle sum theorem).

Learn more about triangle sum theorem on:

https://brainly.com/question/7696843

Answer:

A, D, E

Step-by-step explanation:

I got it right.

Answer:

D and E are correct

Step-by-step explanation:

Since the temperature went over 75 degrees, it was 74 degrees twice

There is no change in that 4 hour period where the graph is flat

All of the others are not true

Answer:

100 degrees

Step-by-step explanation:

Since triangle ABC is similar to triangle DEF, their angles are basically the same.

All angles of a triangle have to add up to 180.

We are already given two angles: 30 and 50

Add them together: 30 + 50 = 80

Now we subtract the number from 180

180 - 80 = 100

The remaining angle has to be 100 degrees

Answer:

See below.

Step-by-step explanation:

The hypotenuse is 35.

-hope it helps

Answer:

I know you from somewhere

Answer:

134 bottles

Step-by-step explanation:

For this, I set up a proportion :

60.30/x = 0.45/1

60.30(1) = 0.45x

60.30/0.45 = 0.45x/0.45

x = 134 :)

Answer:

134 bottles

Step-by-step explanation:

conversion of dollars to cent:

$1 equals to 100 cents.

$60.30 will be (60.30*100) cents → 6030 cents

Bottles sold: total money / each bottle cost.
                  →   6030  /  45
                  →   134

So 134 bottles are sold for 45 cents to earn $60.30 or 6030 cents.

Answer:

-6e^2 - 6ef + 11e + 11f

Step-by-step explanation:

FOIL

(-6e+11)(e-f)

-6e x e = -6e^2

-6e x f = -6ef

11 x e = 11e

11 x f = 11f

Rewrite and you get your answer

Answer:

[tex](x^{2} +6x+8)-(x^{2} )[/tex]

Step-by-step explanation:

Area of Green including the white area:

[tex](x+4)(x+2)[/tex]

[tex]x^{2} +6x+8[/tex]

Area of White area is:

[tex]x^{2}[/tex]

Area of Green without white would be:

[tex](x^{2} +6x+8)-(x^{2} )[/tex]

Answer:

74

Step-by-step explanation:

52+22=74

Answer:

Step-by-step explanation:

n<-7-3

n<-10

=> n= (-infinitive ; -10)

Answer: The answer is valid, because you survey 100 people and 80 of them support building a new stadium.

Step-by-step explanation:

80% agree. 80/100 = 80%

Answer:

Step-by-step explanation:

the first nuclear every time in this topic is y and the second one is x

Answer:

1/4

or 25%

or 0.25

Step-by-step explanation:

With a question like this, you have to multiply.

1/2 * 1/2 = 1/4

or

0.5 * 0.5 = 0.25

Answer:

{(0, 0), (1, 2), (2, 4), (3, 4)}

Step-by-step explanation:

A set of ordered pairs that represent a function is one in which each different ordered pair has a unique x-coordinate (so no two different ordered pairs can have the same x -coordinate).

Therefore, {(0, 0), (1, 2), (2, 4), (3, 4)} is a function as each different ordered pair has a unique x-coordinate.

The other sets all have different ordered pairs that share the same x-coordinate and so these sets do not represent functions.

The vertical line test is also used to determine whether a graph represents a function. If the vertical line intersects the graph only once, then the curve represents a function.  This test can be applied to ordered pairs, in that if two ordered pairs have the same x-coordinate but different y-coordinates, they will be on the same vertical line and therefore do not represent a function.

Explanation:

Ignore the 15 pretzels. We're only focusing on the fish crackers.

3 orange + 5 yellow + 7 green = 15 total fish crackers

Of that total, 5 are yellow.

So approximately 5/15 = 1/3 = 0.333 = 33.3% of the crackers are yellow.

x + y = 15------(1)

x/y = 2------(2)

y = 15 - x

put this value in eq 2

x/(15-x) = 2

x = 2 (15 - x)

x = 30 - 2x

2x + x = 30

3x = 30

x = 10

y= 15 - x

y = 15 - 10

y = 5

Solution:

Given:

Let’s simplify the second equation to find out the value of x.

Now, let’s substitute the value of x into the first equation.

Now, let’s substitute the value of y into the simplified second equation.

Hence, the value of x and y are 5 and 10 respectively.

Answer:

There is no picture

Step-by-step explanation:

Answer:

4/4

Step-by-step explanation:

1/4 plus 1/4 plus 2/4 is 4/4

Answer:

x=10

y = -9

Step-by-step explanation:

-8x - 10y = 10

3x + 2y = 12

Multiply the second equation by 5

5(3x + 2y) = 12*5

15x+10y = 60

Add this to the first equation to eliminate y

-8x - 10y = 10

15x+10y = 60

-----------------------

7x  + 0y  = 70

Divide by 7

7x/7 = 70/7

x = 10

Now find y

3x+2y = 12

3(10) +2y = 12

30 +2y =12

Subtract 30 from each side

2y = 12-30

2y = -18

Divide by 2

2y/2=-18/2

y = -9

Step-by-step explanation:

sori po kailangan ko po ng points sori po talaga

Answer:

56.

Step-by-step explanation:

You add 6 each time, 32 + 6 = 38, 38 + 6 = 44, 44 + 6 = 50, 50 + 6 = 56

Answer:

The answer is 70 feet

Step-by-step explanation:

Here, We know the area so,

Area = Width × Height

Height = Area ÷ Width

H = 4200 ÷ 60 feet

H = 70 feet

Thus, The height of the billboard is 70 feet

-TheUnknownScientist 72

Use this for formula

firstly

ax²+bx+c=0

and then

b±√(b²-4ac))/(2a)

1 . step

First compare the given equation with

general form

[tex]{a{x}^{2}\:+\:bx\:+\:c\:=\:0}[/tex]

2. step

Then find the value of discriminant

by the given equation below

[tex]\mapsto{{b}^{2}\:-\:4ac}[/tex]

3. step

subsitute the value of discriminant and other given value in Quadratic formula as per the equation .

[tex]{\rightarrow{\frac{-\:b\:±\:\sqrt{{b}^{2}\:-\:4ac}}{2a}}}\\[/tex]

Answer:

x = 2/3

Step-by-step explanation:

Add the numbers

[tex]\frac{1}{3}+3=4-x[/tex]

[tex]\frac{10}{3}=4-x[/tex]

Rearrange terms

[tex]\frac{10}{3}=-x+4[/tex]

Subtract 4 from both sides of the equation

[tex]\frac{10}{3}-4=-x+4-4[/tex]

Simplify

[tex]\frac{-2}{3}=-x[/tex]

Divide both sides of the equation by the same term

[tex]\frac{-2}{3}/1=\frac{-x}{1}[/tex]

Simplify

[tex]x=\frac{2}{3}[/tex]

[RevyBreeze]

Answer:16 square feet

Step-by-step explanation:

add the length of the top and the bottom face them multiply the sum of those two by the perpendicular height between them and the product is to be divided by 2 : ((a+b)h)/2)

Answer:

16 ft²

Step-by-step explanation:

First you'll find the area of the rectangle forming in the trapezoid:

3 x 4 = 12

Next, you'll think logically and understand that if BC is 3 feet, EF is also 3 feet. So, you'll subtract 5 - 3 = 2, so AE and FD is 1 foot.

So, you'll now multiply to find the area of the whole trapezoid:

4 x 1 = 4

So:

4 + 12 = 16

Answer: 9/16

Work Shown:

14 red + 10 yellow + 5 green + 3 purple = 32 total

(32 total) - (14 red) = 18 that aren't red

18/32 = 9/16 is the probability of picking something that isn't red.

I made points on the lines of the graph at (-4, -4), (-2, -2), and (2, 2), which don't intersect so I believe the answer is D.

A) Yes, at a positive x-coordination or zero.

B) Yes, at a negative x-coordination or zero.

C) Yes, at negative and positive x-coordinates.

D) No, they will not intersect.