I WILL GIVE 20 POINTS FOR CORRECT ANSWER!​

Answer:

#1

#2

#3

Answer:

b^2-4b+3=0

b²-3x-b+3=0

b(b-3)-1(b-3)=0

(b-3)(b-1)=0

either

b=3 or b=1

.

2n^2 + 7 = -4n + 5

2n²+4n+7-5=0

2n²+4n+2=0

2(n²+2n+1)=0

(n+1)²=0/2

:.n=-1

.

x - 3x^2 = 5+ 2x - x^2

0=5+ 2x - x^2-x +3x^2

0=5+x+2x²

2x²+x+5=0

comparing above equation with ax²+bx +c we get

a=2

b=1

c=5

x={-b±√(b²-4ac)}/2a ={-1±√(1²-4×2×5)}/2×1

={-1±√-39}/2

Answer:

Change in water level over thr period Given is 11.16 mm

Step-by-step explanation:

The change in water level. In the part of the river observed will be ;

Water level. = The rate of change in water level per year * period

Rate of change in water level = 1.8mm /year

Number of years = 6.2

The change in water level is thus :

1.8 mm / year * 6.2 years

= (1.8 mm / year * 6.2

= 11.16 mm

Answer:

y = 2x - 10

y=-8×

put the value of y in equation

y= 2x-10

-8x = 2x - 10

-8x= -8x

x = -8/-8

x=1

Answer:

true

Step-by-step explanation:

"In statistics, a categorical variable is a variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other unit of observation to a particular group or nominal category on the basis of some qualitative property." - Wikipedia...

Answer:

y=3x+20

Step-by-step explanation:

So first, I don't like fractions so I would multiply the whole equation by 4. This will make the equation 3x+y=20. Then you have to isolate the y to find the answer so you should subtract 3x from both sides. This will make the equation look like this y=-3x+20. Therefore, y=3x+20

Answer: an=8+(n-1)(-6) .

Step-by-step explanation:

Answer:

[tex]x = 18^o[/tex]

Step-by-step explanation:

The vertically opposite angle [tex]2x[/tex] must be equal to the original 36 degrees.

So,

[tex]2x = 36^o\\\implies x = \frac{36^o}{2}\\\implies x = 18^o[/tex]

Answer:

A triangle with angles measuring 55°, 60°, 65° degrees

Step-by-step explanation:

Two obtuse angles means two angles over 90°

The sum of all angles in a triangle are 180°

90°+90° itself is 180°, so we cant have two angles greater than 90°

Two right angles means 90° and 90° which is 180°, not possible

55°+60°+65° = 180° so it is possible.

Answer:

2800000

Step-by-step explanation:

10^6 means 1000000

2.8 x 1000000 = 2800000

Answer:

Step-by-step explanation:

Base of a triangle is defined by the segment joining two vertices and height of a triangle is the vertical distance between the base and the third vertex.

Therefore, by following this property, triangles given in first column will match the triangles given in second column. (as figure attached)

Answer: Base of a triangle is defined by the segment joining two vertices and height of a triangle is the vertical distance between the base and the third vertex.

Therefore, by following this property, triangles given in first column will match the triangles given in second column. (as figure attached)

Step-by-step explanation:

Answer:/

I,,,,M SORRYI NEED POINTSSS

Step-by-step explanation:

Answer:

15x is the answer ihope this helps:j

Answer:

6.72x10^7

Step-by-step explanation:

I hope this helps

Answer: 40

Step-by-step explanation:

Let the two numbers be a and b.

Therefore,

a - b = 3 ....... i

a + b = 13 ....... ii

From equation I, a = 3 + b

Put a = 3+b into equation ii

a + b = 13

3 + b + b = 13

3 + 2b = 13

2b = 13 - 3

2b = 10

b = 10/2

b = 5

Since a = 3 + b

a = 3 + 5

a = 8

The product of the numbers will be:

= 8 × 5

= 40

Answer: angle x= 20 degrees

Step-by-step explanation: sum of angles in triangle is 180 degrees.

You count 2x + 3x +(x+60) = 180

6x=120

Answer:

It was a 16.5% tip!

Please mark brainliest and I hope this answer helped :)

Answer:

Sam had 80 dollars in his pocket. He was feeling generous, so he handed out equal amount of money to each of his friends. After he handed out the money, he had 53 dollars left. How much did Sam give out to each one of his friends?

Step-by-step explanation:

In this real-world problem, the money he had at the beginning resembles the 80 in the equation. The -3x is the money he gives out to each of his friends. The 53 on the right-hand side is the money he has left after he gives the money away.

Answer:

area = 88 yd²

Step-by-step explanation:

area = 1/2(b1 + b2)h = 1/2(9 + 13)(8) = 88 yd²

Answer:

88 yd^2.

Step-by-step explanation:

Area of a trapezoid = 1/2 * h * (a + b) where h = height, a and b are lengths of 2 parallel side.

Area = 1/2 * 8(9+13)

= 4 * 22

= 88 yd^2.

Answer:

You take a regular photo of your question on your device and upload it when your asking a question on brainly!

Step-by-step explanation:

Hope I helped!

Answer:

No.

Step-by-step explanation:

In order for this equation to be true, either the 8 would have to be negative or the 11.

Answer:

$3.08 for 7 stamps  

Step-by-step explanation:

The unit rate (price per stamp) is:

$2.20

-------------- = $0.44/stamp

5 stamps

Then 7 stamps would cost:

 $0.44          

------------ * 7 stamps = $3.08 for 7 stamps  

1 stamp    

Answer:

(1) [tex]x = -4[/tex] (2) [tex]x = 7[/tex]

Step-by-step explanation:

From the first equation:

[tex]2(x + 3) = x - 4\\\implies x = 2(x + 3) + 4\\\implies x = 2x + 6 + 4\\\implies x = 2x + 4\\\implies -4 = 2x - x\\\implies x = -4[/tex]

From the second equation,

[tex]4(5x - 2) = 2(9x + 3)\\\implies 20x - 8 = 18x +6\\\implies 20x - 18x - 8 -6 = 0\\\implies 2x -14 = 0\\\implies 2x = 14\\\implies x = \frac{14}{2} = 7[/tex]

Answer:

Step-by-step explanation:

n=2p

p+5n=110, using n found above makes this become

p+5(2p)=110

p+10p=110

11p=110

p=10, since n=2p

n=2(10)

n=20

So there are 10 pennies and 20 nickels.

Answer:

257 students in the lower school

Step-by-step explanation:

you want to make the fractions have an equal denominator so make 1/3 5/15s and 2/5 to 6/15's, 5+6= 11/15s that leaves 4/15's for the lower part of the school

4 divided by 15 is 4.6 repeating so divide 1200 by 4.66 and boom

Answer: the first one is 35 the second is -36

Step-by-step explanation: hope this helps

Answer:

this is what i think you were asking for, if not you can use this to make a similar graph

Step-by-step explanation:

*see attached photo*

Answer:

B. Point M

Step-by-step explanation:

Point N (-4, 2) is 4 units away from the y axis, going left

Point M (-4, -2) is also 4 units away from the y axis, going left

Answer:

Step-by-step explanation:

If it is a Pythagorean Triple the hypotenuse and the legs of a right triangle will all be integer values where

c^2=a^2+b^2

In this case, this isn’t even a right triangle as

20^2+30^2=40^2

400+900=1600

1300!=1600

because 1300 does not equal 1600 this is not a Pythagorean Triple.