2x^2 + 2x+1=0 solve for x

Answer:

Step-by-step explanation

4x-3=y

perpendicular means

-1/4x-3=y

Answer:

A=0.3

Step-by-step explanation:

0.3

0.5

1.1

1.3

thats the correct answer

Answer:

A

Step-by-step explanation:

Answer:

Yes, it is.

Step-by-step explanation:

Answer:

Yes sir

Step-by-step explanation:

Answer:

It is because not all sides of a rectangle are equal in length; unlike a square.

Step-by-step explanation:

Let's start by drawing the first diagonal.

You know already how a rectangle looks. It has 4 sides and 2 sets of parallel sides. Each pair of parallel sides has the same length.

A diagonal is a line crossing from one edge of a four-sided shape to the opposite edge; such that it divides the shape into two equal halves.

Now place your rectangle horizontally. Let the two longer sides be on the horizon while the two shorter sides go vertical.

We draw the first diagonal from the edge on the top right to the opposite edge (down left). This will divide the shape into two equal halves and each half will be a triangle; a congruent one at that.

When you fold this rectangle along its diagonal, the two triangles will not overlap! The resulting shape will be like two triangular mountains lying side by side. You can use a paper (cut in the shape of a rectangle) for this experiment.

Why does this happen, instead of the two triangles covering each other (overlapping)?

This happens because a rectangle doesn't have 4 equal sides. Check out a square and you'll see that both triangles will overlap after a diagonal is drawn across the square.

Draw the second diagonal of the rectangle (from up-left to down-right) and the same thing is observed.

Answer:

11x+2

Step-by-step explanation:

Answer:

11x=+2

Step-by-step explanation:

5x+2(3x-4)+10

5x+(2*3x-2*4)+10

5x+(6x-8)+10

5x+6x-8+10

=11x=2

Answer:

a

Step-by-step explanation:

hope this helps yout just have to put the negative letters with the positive!!!

Answer: see below

Step-by-step explanation:

If this is a 6 sided die then the only possible roll that isnt an odd, a 2, or a 4 is 6.

The probability of something happening is also the probability of something not happening. So in order to not roll an odd, a 2 or a 4 in two rolls, you have to roll a 6 twice.

P = 1 - (1/6)(1/6) = 1 - (1/36) = (35/36)

Answer:

12% alkaline

Step-by-step explanation:

The amount of 1% acid solution she needs to mix is 25 ml while the percentage of 5% acid solution she needs to mix is 75 ml.

Given to us

A chemist has a bottle of a 1% acid solution and a bottle of a 5% acid solution.

She wants to mix the two solutions to get 100 ml of a 4% acid solution.

Assumption

Let the amount of 1% acid solution be x ml, and the amount of 5% acid solution be y ml.

As the chemist wants to mix the two solutions to make 100 ml of solutions, therefore,

amount of 1% acid solution + amount of 5% acid solution = 100ml

x + y = 100.....equation 1

Solving for y,

y = 100 - x

We know that the mixture is having a 4% concentration and is 100 ml in volume.

[tex](1\%)x+(5\%)y = (4\%)100\\0.01x+0.05y=0.04\times 100\\[/tex]

Substitute the value of y,

[tex]0.01x+0.05(100-x)=0.04\times 100\\\\0.01x + (0.05\times 100)-(0.05\times x) = 4\\\\0.01x + 5 -0.05x =4\\\\0.01x-0.05x = 4-5\\\\0.04x = 1\\\\x=\dfrac{1}{0.04}\\\\x = 25\ ml[/tex]

Substitute the value of x in equation y,

[tex]x+y = 100\\25 +y =100\\y = 100-25\\y=75\ ml[/tex]

Hence, the amount of 1% acid solution she needs to mix is 25 ml while the percentage of 5% acid solution she needs to mix is 75 ml.

Learn more about the System of equations:

https://brainly.com/question/12895249

Answer:

1. SUN

2. EVAPORATION

3. CONDENSATION

4. EVAPORATION

5. PRECIPITATION

6. CRYSTALLIZATION

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Answer:

[tex]x = \frac{log\ 243}{log\ 3}[/tex]

Step-by-step explanation:

Given

[tex]3^x = 243[/tex]

Required

Express as a logarithm

[tex]3^x = 243[/tex]

Take log of both sides

[tex]log\ 3^x = log\ 243[/tex]

Apply the following law of logarithm

[tex]log\ a^b = b\ log\ a[/tex]

So, the expression becomes:

[tex]log\ 3^x = log\ 243[/tex]

[tex]x\ log\ 3 = log\ 243[/tex]

Divide both sides by log 3

[tex]\frac{x\ log\ 3}{log\ 3} = \frac{log\ 243}{log\ 3}[/tex]

[tex]x = \frac{log\ 243}{log\ 3}[/tex]

Hence, the expression in base 10 is:

[tex]x = \frac{log\ 243}{log\ 3}[/tex] or [tex]x = \frac{log_{10}\ 243}{log_{10}\ 3}[/tex]

Answer:

3=1/5x+7

Step-by-step explanation:

when it says "Of a number" it means to add a variable, so i added a x. and when it says "more than" it means to add, so 3=1/5x+7 is the answer

Answer:

C. y + 3 = ¼(x + 4)

Step-by-step explanation:

✔️First, find the slope of the given line on the graph that it is perpendicular to:

Slope (m) = ∆y/∆x = -4/1 = -4

Thus, the slope of the line that is perpendicular to the given line would be the negative reciprocal of -4.

The negative reciprocal of -4 = ¼

✔️Find the equation in point-slope form, y - b = m(x - a) using slope and a point on the line:

Substitute m = ¼, (a, b) = (-4, -3) into y - b = m(x - a):

y - (-3) = ¼(x - (-4))

y + 3 = ¼(x + 4)

Answer:

a

Step-by-step explanation:

Answer: 90%

Step-by-step explanation: All u gotta do is 18/20. You get .9 and u just add a 0 at the end

Answer:

1). Profit = 3x - 180

2) Profit of selling 1000 video games = $2820

Step-by-step explanation:

Expression for the revenue = 5x² + 2x - 80

Expression for the production cost of the video games = 5x² - x + 100

Since, profit is the difference between the revenue and the cost,

Expression for the profit will be,

Profit = Revenue - Cost

         = (5x² + 2x - 80) - (5x² - x + 100)

         = 5x² + 2x - 80 - 5x² + x - 100

         = 3x - 180

Here, x = Number of video games sold

If number of video games sold = 1000

Profit = (3×1000) - 180

         = 3000 - 180

         = $2820

Answer:

553 acres

Step-by-step explanation:

94010 ÷ 170 =553

Answer:

D

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

solve with y2-y1 / x2-x1

5-5 is 0

-1-3 is -4

0/4 is 0

slope is 0

Hello!

[tex]\large\boxed{g(5) = 25}[/tex]

If g(x) = 4x + 5, find g(5) by substituting 5 for x:

g(5) = 4(5) + 5

Simplify:

g(5) = 20 + 5

g(5) = 25

Step-by-step explanation:

Apparently the common ratio is

3

Explanation:

The 2nd term is 3

the 3rd=9=3²

the 4th= 27=3³

To get to the n

th term we will have to multiply n−1

times by 3

Or: tn=3n−1

Answer:

Length of first piece = 5 inches

Length of second piece = 10 inches

Length of third piece = 26 inches

Step-by-step explanation:

Given that:

Length of piece of steel = 41 inch

Let,

x be the length of first piece

y be the length of second piece

z be the length of third piece

According to given statement;

x+y+z = 41          Eqn 1

y = 2x                Eqn 2

z = 5x+1            Eqn 3

Putting value of y and z from Eqn 2 and 3 in Eqn 1

[tex]x+2x+5x+1=41\\8x = 41-1 \\8x = 40[/tex]

Dividing both sides by 8

[tex]\frac{8x}{8}=\frac{40}{8}\\x=5[/tex]

Putting x=5 in Eqn 2 and 3

y = 2(5) = 10

z = 5(5) + 1 = 25+1 = 26

Hence,

Length of first piece = 5 inches

Length of second piece = 10 inches

Length of third piece = 26 inches

Answer:

The slope of the line will change from negative to positive

Step-by-step explanation:

the equation is in the form of y=mx+c and m is negative. By multiplying m with another negative number it turns positive, thus slope changes from negative to positive

Answer:

63

Step-by-step explanation:

plug 125 in for 'f'

3/5(125-20) = 3/5 · 105 = 315/5 = 63

Answer:

15%

Step-by-step explanation:

Answer:

so she had x oranges

she put the oranges into p boxes with 3 in each box and had 2 left so

total=3 times p+2 or

total=3p+2

Answer:

Step-by-step explanation:

Area of circle=Pi times radius^2

Diameter is half of radius=8.4

Pi*8.4^2=221.670777637

Hope this helps!

Answer:

221.56 cm^2 or 70.56pi

Step-by-step explanation:

Area of a circle  = pi*radius^2

Radius = diameter/2, radius = 8.4

3.14(8.4)^2 = 221.56 cm squared, or 70.56pi