Hello I really need help be genuine I don’t want any links ! I really need help I will make brainliest :(

Answer:

solution given:

4x^2 -100=0

4x²=10²

(2x)²=10²so

2x=±10

x=±10/2

so

x=5

or x=-5

Answer:

The answer is x=-5

Step-by-step explanation:

Answer:

68 11/13

Step-by-step explanation:

Answer:

68 11/13

Step-by-step explanation:

So the question wants the problem 45+25-15÷13 to be solved. With this, use the order of PENDAS to solve the problem.

First, do -15 ÷ 13

This will get you -1 2/13

Next, add 45 and 25 together to get 70.

Lastly, do 70-1 2/13 to get 68 11/13.

Answer:

The third one, 2c - 6

Step-by-step explanation:

Answer:

[tex]y=-2x-15[/tex]

Step-by-step explanation:

[tex]y=mx+b[/tex].

m is the slope of the line. To find it we can do [tex]\frac{dy}{dx}[/tex] which is the difference between the y-coordinates divided by the difference between the x-coordinates.

So: [tex]\frac{dy}{dx} =\frac{-9-(-3)}{-3-(-6)} =\frac{-6}{3} =-2[/tex]. Now we have the slope, let's input a set of coordinates into the equation so that we can find the constant [tex]b[/tex].

[tex]-9=-2(-3)+b[/tex]

[tex]b=-15[/tex] - Re-arranging to get b

Now re-write the equation as we have the constants.

[tex]y=-2x-15[/tex]

Answer: By putting it on a graph

Step-by-step explanation:

Answer:

48 cups will be needed thank you

Answer:

148 = x

Step-by-step explanation:

Using the Secant and Tangent Intersection theorem we can say;

38 = 1/2 (x - 72)

38 = 1/2x - 36

74 = 1/2x

(74)/(1/2) = x

148 = x

Hope this helps!

Answer: The answer is B,C, and D

Step-by-step explanation:

Answer:

well the shape is same but the measurements are different

Step-by-step explanation:

Answer:

-3x^2√21x * 5x^2√3x

Step-by-step explanation:

-3x√21x^3 * 5x√3x^3

-3x^2√21x * 5x^2√3x

Answer:

27

Step-by-step explanation:

Answer:

108

Step-by-step explanation:

You start by finding the area of the trapezoid, which is ((3+5)/2) 3 = 12, then you multiply 12 by 9 which is 12*9 = 108

Answer:

Sorry, I don't speak confusion.

Step-by-step explanation:

Answer:

answer is d

Step-by-step explanation:

hope it helps!!!

Answer:

314.2

Step-by-step explanation:

Circumference of a circle is π[tex]r{2}[/tex]

so 3.142 × [tex]10{2}[/tex]=314.2

Answer:

circumference of the circle=2πr

=2×3.142×10

=62.84 cm

Answer:

B ⊂ A

Step-by-step explanation:

We know that:

A {x|x is a polygon}

So set A is the set of all polygons.

B {x|x is a triangle}

Set B is the set of all triangles.

First, a polygon is a plane geometrical figure made of a finite sequence of straight segments.

For example, a triangle is a polygon, a rectangle is a polygon, etc.

Then, all triangles are polygons, but not all polygons are triangles.

So we can conclude that the whole set B is included in the set A.

Then the correct notation would be:

B ⊂ A

Answer:

B ⊂ A

Step-by-step explanation:

Answer:

It is a quadrilateral! Note the four sides, angles, and vertices.

Step-by-step explanation:

Answer: it should be 565.5

Step-by-step explanation:

Answer: the volume would be 565.49 rounded 565.5

Step-by-step explanation:

trust i plugged it into a cylinder calculator

Answer:

I think 3.

Step-by-step explanation:

You make a right triangle, an isosceles, and a scalene. You can't make an equilateral, because those sidelengths are not the same size.

Answer:

Step-by-step explanation:

make the other half of the triangle on top one and then you make another triangle out of the bottom one and make the other half so you just want to put  a line from one line on the right side to the bottom line so then you just need  do the same thing on the left side

Answer:

20

Step-by-step explanation:

volume: lwh

.666*5*6=20

Answer:

20 cm³

Step-by-step explanation:

[tex]\frac{2}{3}[/tex] · 6 · 5

[tex]\frac{2}{3}[/tex] · 30

20 cm³

Answer:

-101 c.

Step-by-step explanation:

-249 + 148

= -(249 - 148)

= -101 C.

The approximate freezing point of chlorine is -101°C.

We have,

The freezing point of neon is about -249c .

The freezing point of chorine is about 148c higher.

To find the approximate freezing point of chlorine, we add 148°C to the freezing point of neon:

= -249°C + 148°C

= -101°C

Therefore, the approximate freezing point of chlorine is -101°C.

Learn more about Integers here:

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Answer:

1/2 mile.

Step-by-step explanation:

There 4 1/4 hours in 1 hour so

the answer is 4 * 1/8

= 4/8

= 1/2 mile.

Answer:

The answer should be C

Step-by-step explanation:

I just got done calculating it and according to my calculations it should be C

Answer:epression could be used to represent 2/3

1/2

1/3

1/3

The percentage increase from the initial population of 397,000 to 412,880 is 4%

From the question, we have the following numbers:

397,000 and 412,880.

The numbers are increments from 397,000 to 412,880.

The percentage increase is calculated as:

%Percentage = (Old number - New number)/Old Number

Substitute the numbers in the above equation

%Percentage = (412880 - 397000)/397000

Evaluate the difference

%Percentage = 15880/397000

Evaluate the quotient

%Percentage = 0.04

Express 0.04 as percentage

%Percentage = 4%

Hence, the percentage increase from the initial population of 397,000 to 412,880 is 4%

Read more about percentage increase at:

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Answer:

C.

If Carlos doesn’t study at all, his grade will be 50%.

Step-by-step explanation:

If Carlos doesn’t study at all, his grade will be 50%.

Check Answer

Correct. If Carlos spends 0 hours studying, his grade will be 50%.

Answer:

It is C

Step-by-step explanation:

Answer:

Hey, read below!! :)

Step-by-step explanation:

Both sides are the same length. X = 70