Question is;
Find the number of roots/solutions for the quadratic equation: x^2 + 4 = 0

Unsure about how to figure that out, as we don't have bx. Please help

Answer:

i believe the answer is c

Step-by-step explanation:

Answer: x = -1

Calculation/Explanation:

11x-3 = x-13

11x-3 -x = x-13 -x

10x-3 = -13

10x-3 +3 = -13 +3

10x = -10

10x /10 = -10/10

x = -1

Answer:

The y -intercept is the point  (0, -4).

Step-by-step explanation:

The slope of the perpendicular line = -1/m

= -1/-1 = 1.

So it is y = x + b.

To find b we substitute the point (-3, -7):

-7 = -3 + b

b = -7 + 3 = -4.

The y -intercept is the point (0, -4).

Answer:

see explanation

Step-by-step explanation:

sin M = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{KL}{ML}[/tex] = [tex]\frac{2\sqrt{11} }{12}[/tex] = [tex]\frac{\sqrt{11} }{6}[/tex]

tan M = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{KL}{KM}[/tex] = [tex]\frac{2\sqrt{11} }{10}[/tex] = [tex]\frac{\sqrt{11} }{5}[/tex]

Answer:

Lines that have a slope of -3

Step-by-step explanation:

Take the negative reciprocal of 1/3 and all lines that have that as the slope are perpendicular

Answer:

1. y + 2 = –3(x – 4)

3. y = -3x – 5/3

5. 3x + y = 7

Step-by-step explanation:

because yes

Answer:

4x=8y

Step-by-step explanation:

Ok so a number multiplied by 4 equal  a number multiplied by 8.

Both numbers can't have the same variable because if they had the same varable that means they are the same number which in that case means Marcy is wrong but we know she is right because Mr.Kim said so.

let's plug in numbers. If they had the same variable it would be:-4x=8x

                                                                                         let x=2,    4(2)=8(2)

                                                                                                           8=16 not true

if the variables were not the same:-4x=8y

                                   let x=4

                                   let y=2          4(4)=8(2)

                                                          16=16 true                                    

Answer:

$165.50 dollars

Step-by-step explanation:

$993 / 6 = $165.50

Lula will need to pay $165.50 each month for 6 months to pay off her $993 furniture purchase without interest.

Lula purchased furniture on her credit card and plans to make payments over a period of 6 months with no interest charged. To calculate the monthly payment amount, you would divide the total cost of the furniture by the number of months over which she plans to pay.

The formula to find out the monthly payment is:

Monthly Payment = Total Cost / Number of Months

So for Lula, it looks like this:

Monthly Payment = $993 / 6

Monthly Payment = $165.50

Therefore, if Lula pays $165.50 each month, she will have the furniture paid off in 6 months without incurring any interest.

Answer:

2 ( 7r - 4 )

Step-by-step explanation:

14r - 8

To factor this expression, you must pull the factor 2 outside the expression by basically reversing the distributive property:

14r - 8  =  2 ( 7r - 4 )

Answer:

Answer:

The answer is C

Step-by-step explanation:

All of the side lengths on the pre-image multiplied by 3 equal out to the side lengths proportional, and the angles are all the same, making them congruent. Please consider giving brainliest.

Answer:

The player that placed the knight after the first person at the start of the game. There in his turn whatever role the knight played he both had opportunity to space each knight strategically and use the knight to protect whatever wins the game.

Step-by-step explanation:

Maths is 81/80 =1

Answer:

by 2

Step-by-step explanation:

Answer: 2 seconds

Step-by-step explanation:

A computer company is testing a new booster to increase program load times. The box plots show the number of seconds it takes to load a program with and without the booster. Using these plots, how much did the median change?

Answer:

[tex]B) \frac{DE }{EA} =\frac{CB}{AC}[/tex]

Step-by-step explanation:

If ant two given triangles are SIMILAR, then they have equal corresponding angles and their corresponding sides are PROPORTIONAL.

For example: if Δ ABC ≈ Δ PQR, then

∠A  = ∠P  , ∠B  = ∠Q  and ∠C  = ∠R

and [tex]\frac{AB}{PQ} = \frac{BC}{QR} = \frac{AC}{PR}[/tex]

Now, here given:  Δ ADE ≈ Δ ABC

Then by the SIMILAR postulate their corresponding angles are equal and their corresponding sides are Proportional.

[tex]\implies \frac{AD}{AB} = \frac{DE}{BC} = \frac{AE}{AC}[/tex]    ............. (1)

Consider from above:

 [tex]\frac{DE}{BC} = \frac{AE}{AC}\\\implies \frac{DE}{AE} = \frac{BC}{AC}[/tex] ............. (2)

Here, the given options are:

[tex]A) \frac{EA }{DE} =\frac{CB}{AC}[/tex]     FALSE

[tex]B) \frac{DE }{EA} =\frac{CB}{AC}[/tex]   TRUE    (from 2)

[tex]C) \frac{DE }{EA} =\frac{AC}{CB}[/tex]   FALSE

[tex]C) \frac{EA}{DE} =\frac{AC}{CB}[/tex]    FALSE

Answer:

b

Step-by-step explanation:

took test

Answer:

5b+5y

Step-by-step explanation:

Answer:

c) 4

Step-by-step explanation:

The sum of two numbers is 14. The larger number minus three times the lesser number is -2

To solve this question, we need to write the statement mathematically;

Let the two numbers be x and y

"The sum of two numbers is 14" can be mathematically written as x+y = 14

and

"The larger number minus three times the lesser number is -2" can be mathematically written as x -  3y  = -2

x + y = 14  ------------------(1)

x - 3y= -2 -------------------(2)

Subtract equation (2) from equation (1)

[x - x = 0          y - (-3y)=4y     14-(-2)=16]

4y  = 16

To get the value of y divide both-side of the equation by 4

4y/4 = 16/4

y  =   4

Substitute y=4 into equation (1)

x + y =14

x +4 =14

Subtract 4 from both-side of the equation

x + 4 -4  = 10]-4

x = 10

x=10 and y =4

Therefore the lesser number is 4

Answer:

w = 30

Step-by-step explanation:

w ÷ 5 = 6

Multiply both sides of the equation by 5

w = 30

Hope this helps :)

Answer:30

Step-by-step explanation:

5 divided by 30 is 6

The solutions to f(x) = 64 is x = 7 and x = –7.

Solution:

Given data:

[tex]$f(x)=x^{2}+15[/tex] and [tex]f(x)=64[/tex]

To find the solutions when f(x) = 64.

Both are equations of f(x), so equate the given equations, we get

[tex]x^2+15=64[/tex]

Subtract 15 from both sides of the equation.

[tex]x^2+15-15=64-15[/tex]

[tex]x^2=49[/tex]

49 can be written as 7².

[tex]x^2=7^2[/tex]

Taking square root on both sides of the equation, we get

x = ±7

The solutions to f(x) = 64 is x = 7 and x = –7.

Answer:

[tex]x=-1\\y=7[/tex]

Step-by-step explanation:

Given equations:

[tex]-8x+5y=43[/tex]    Equation:1

[tex]-8x+4y=36[/tex]     Equation:2

As the coefficients of 'x' are same which will eliminate the terms of 'x':

Subtracting Equation:2 From Equation:1

        [tex]-8x+5y-(-8x+4y)=43-36\\\\-8x+5y+8x-4y=7\\\\5y-4y=7\\\\y=7[/tex]

Putting value of 'y' in either equation:1 or 2

Putting y=7 in equation:2

   [tex]-8x+4y=36[/tex]

    [tex]-8x+4(7)=36\\\\-8x+28=36[/tex]

Subtracting '28' from both side:

     [tex]-8x+28-28=36-28\\\\-8x=8\\[/tex]

Changing the sides:

       [tex]8x=-8[/tex]

         [tex]x=\frac{-8}{8} \\\\x=-1[/tex]

The values are :        

                             [tex]x=-1\\y=7[/tex]

Answer:

x = 2

Step-by-step explanation:

Start by combining like terms.

Collecting x terms onto the left side results in 8x;

collecting constants onto the right side results in 16.  

Therefore, 8x = 16, and x = 2

Answer:

Answer is 5

Step-by-step explanation:

if you have any doubts see the image

The Pythagorean Theorem was used on a right triangle with sides of length 4 to find that the hypotenuse has a length approximately equal to 5.7.

Here, your task is to apply the Pythagorean Theorem which states that in a right triangle, the square of the hypotenuse (c) is equal to the sum of the squares of the other two sides (a and b). In this case, both a and b are given as 4. We can therefore calculate c as follows:

https://brainly.com/question/19649203

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Answer:

120

Step-by-step explanation:

Answer:

a) 675 000

b) 685 000

Step-by-step explanation:

The population of a town is 680 000 correct to the nearest 10 000.

a) To find it lower bound, we level of accuracy by 2 and then subtract from 680 000

The lower bound is:

680 000-5000=675,000

Therefore the least possible population of the town is 675 000

b) We repeat the same process to find the upper bound

680 000+5000=685,000

Answer:

8:5

Step-by-step explanation:

Given there are 8 male teachers and 5 female teachers,The ratio of number of male teachers to female teachers

= no. Of male teachers/no. Of female teachers

That’s

8/5

8:5

8:5 = 160%

theres not really an explanation to this hope it helps :)

Answer:

-30

Step-by-step explanation:

Hope this helps! Brainliest is appriciated.

Answer:

[tex]24x - 12 - 43x - 6 \\ 24x - 43x - 12 - 6 \\ - 19x - 18[/tex]

Answer:

Step-by-step explanation:

The 21st term of the given geometric sequence can be found by using the formula for the n-th term of a geometric sequence: a_n = a_1 * r^(n-1). In this case, it is 112.5 * 2^(21-1).

In a geometric sequence, each term after the first is found by multiplying the previous term by a fixed, non-zero number called the common ratio. In this case, 225 divided by 112.5 gives us the common ratio of 2. Therefore, to find the 21st term of the given geometric sequence, we use the formula: a_n = a_1 * r^(n-1). Here, a_n is the n-th term, a_1 is the first term, r is the common ratio and n is the term which we want to find.

So, substituting the given values into the formula, a_21 = 112.5 * 2^(21-1). Calculate this and you'll have the 21st term of the geometric sequence.

https://brainly.com/question/33243139

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Answer:

sarah has 1 apple left

About 71.96% of the cylindrical water tank, with a radius of 5 feet and a height of 10 feet, is filled with water when it contains 565.2 cubic feet of water.

To determine what percent of the tank's volume is filled with water, we must first calculate the total volume of the cylindrical tank using the formula for the volume of a cylinder: V = (pi)r²h. Here, the radius r is 5 feet, and the height h is 10 feet.

The total volume V of the tank is:

V = (pi)(5 feet)²(10 feet) = 3.14159 times 25 times 10 = 785.398 cubic feet

Now, since the volume of water in the tank is given as 565.2 cubic feet, we can calculate the percent of the tank's volume that is filled with water by dividing the volume of water by the total volume of the tank and then multiplying by 100 to convert to a percentage. So the calculation becomes:

Percent filled = ([tex]\frac{565.2}{785.398}[/tex]) times 100

Percent filled approx 71.96%

Therefore, about 71.96% of the tank's volume is filled with water.

Answer:

(-5)

( 1 )

Step-by-step explanation:

the image is 1 units upper than object and 5 units behind the object therefore

x=-5

y=1