Solve the following quadratic equation for all values of x in simplest form.
4(6 — 5x)² + 11 = 20

Answers

Answer 1

Answer:

4-20(6x-5x)^2+11

(6-5x)^2=11+(-16)

6^2-10x+25=-5

6^2-10x+20


Related Questions

The side-lengths of a triangle are increased by a scale factor of 4. Predict
how this change will affect the area.

Answers

Answer:

It will become 64 times larger

Step-by-step explanation:

The Pyramid of the Sun in Mexico is a square pyramid. The base edge is approximately 220 meters, and the height is approximately 70 meters.

What is the approximate surface area of the sides of the pyramid to the nearest thousand square meters?

Answers

The surface area of the square pyramid will be 105768.98 square meters.

What is surface area?

The space occupied by any two-dimensional figure in a plane is called the area. The area of the outer surface of anybody is called the surface area.

Given that:-

The base edge is approximately 220 metersThe height is approximately 70 meters

The surface area of the pyramid will be:-

[tex]SA\ = \ a^2+2a\sqrt{\dfrac{a^2}{4}+h^2}}[/tex]

SA  =  48400 + 440 √17000

SA  =   48400  +  57368

SA  =   105768.98  square meters

Therefore the surface area of the square pyramid will be 105768.98 square meters.

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please help and explain.

Answers

answer : -40/41

steps:

soh cah toa

sin is soh

meaning opposite/hypotenuse

opposite is 9 and

hypotenuse is 41

now you can treat it like a triangle and use the pythagorean theorem

a^2 + 9^2 = 41^2

a^2 + 81 = 1681

a^2 = 1600

a = 40

in soh cah toa

cos is adjacent/hypotenuse so

cos is 40/41

its in quadrant 2 so its negative

-40/41

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The height of a triangle is 12 centimeters more than its base. The area of the triangle is 189 square centimeters Find the base and height of the tiangle?

Answers

Answer:

C

Step-by-step explanation:

the area of a triangle is

baseline × height / 2

so, we know in our case

b(b+12) = 189 cm²

b² + 12b - 189 = 0

let's try to solve this by completing the square.

that means we try to find the expression

(b + k)² + c

that is equal to

b² + 12b - 189

(b + k)² + c = b² + 2kb + k² + c = b² + 12b - 189

so,

2k = 12

k = 6

and then

k² + c = -189

6² + c = -189

36 + c = -189

c = -225

(b + 6)² - 225 = 0

(b + 6)² = 225

b + 6 = 15

b = 9

so, the baseline b = 9 cm.

the height b+12 = 9+12 = 21 cm.

graph of a function, f(x), has zeros at - 3, and 5. Which of
following is a factor of f(x)?
(2x - 3)
(2x + 3)
(3x + 2)
(x + 5)



Answers

The function is a quadratic function, and none of the given options is a factor of the graph of the function

How to determine the factor?

The zeros of the function are given as:

-3 and 5

This means that:

x = -3 and x = 5

Rewrite as:

x + 3 = 0 and x - 5 = 0

Multiply both equations

(x + 3)(x -5) = 0 * 0

This gives

(x + 3)(x -5) = 0

Express as a function

f(x) = (x + 3)(x -5)

The above means that the factors of the function are (x + 3) and (x -5)

Hence, none of the given options is a factor of the graph of the function

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Write the equality in the given diagram below

Answers

Answer:

[tex] 3 < x \leqslant - 1[/tex]

Explanation:

the point on the left is closed with the line going to the right so it is greater than or equal to x

[tex] - 1 \geqslant x[/tex]

and the point on the right is open with the line going to the right so it is less than x

[tex]3 < x[/tex]

Consider this equation. cos(0)=-3/10 if 0 is an angle in quadrant ii, what is the value of tan(0)? sqrt91/10 -sqrt91/3 sqrt91/3 -sqrt91/10

Answers

The value of tan(x) is [tex]-\frac{\sqrt{91}}{3}[/tex] if cos(x) = -3/10 and the angle is in the second quadrant i.e. quadrant II

How to determine the value of tan(x)?

The expression is given as:

cos(x) = -3/10

Using the following trigonometry identity:

sin²(x) + cos²(x) = 1

The equation become

sin²(x) + (-3/10)² = 1

Evaluate the exponent

sin²(x) + 9/100 = 1

Subtract 9/100 from both sides

sin²(x)  = 91/100

Take the square root of both sides

[tex]\sin(x) = \frac{\sqrt{91}}{10}[/tex]

Sine is positive in quadrant II.

So, the tangent is calculated using:

[tex]\tan(x) = \sin(x) \div \cos(x)[/tex]

This gives

[tex]\tan(x) = \frac{\sqrt{91}}{10} \div -\frac{3}{10}[/tex]

Evaluate

[tex]\tan(x) = -\frac{\sqrt{91}}{3}[/tex]

Hence, the value of tan(x) is [tex]-\frac{\sqrt{91}}{3}[/tex]

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Katrina had $138.72 in her checking account. she wrote checks to take out $45.23 and $18.00, and then made a deposit of $75.85 into her account. how much does katrina have in her account now?

Answers

$151.34
You subtract $45.23 and $18.00 from $138.72 and then add $75.85 to the sum of that and get $151.34 as your answer.

Solve for x. Round your answer to the nearest tenth if necessary.

Answers

Answer:

x ≈ 17.5

Step-by-step explanation:

using Pythagoras' identity in the right triangle.

the square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

x² = 9² + 15² = 81 + 225 = 306 ( take square root of both sides )

x = [tex]\sqrt{306}[/tex] ≈ 17.5 ( to the nearest tenth )

Answer: x= 17.5

Explanation:
9^2 + 15^2= 81 + 225 =306
And the square root of 306 is 17.49 and you ask for it to be rounded to the nearest tenth so it will be 17.5.

Which equation is equal to y = 2x + 3 ?
the options are
y + 3 = 2x

y - 3 - 2x = 0

2x + y = 3

y + 2x = -3

Answers

The equation y = 2x + 3 is a linear equation, and the equivalent equation of y = 2x + 3 is y - 3 - 2x = 0

How to determine the equal equation?

The equation is given as:

y = 2x + 3

Subtract 3 from both sides

y - 3 = 2x

Subtract 2x from both sides

y - 3 - 2x = 0

The above means that the equation y - 3 - 2x = 0 is equal to the equation  y = 2x + 3

Hence, the equivalent equation of y = 2x + 3 is y - 3 - 2x = 0

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I need an equation for the line

Answers

Answer:

Y = -(1/3)X

Step-by-step explanation:

Extract two points

P1(6; -2) P2(-6; 2)

Now:

Y=mX+n. n=0 (interception with Y axis) exis)

Y=mX +0. m= (y2-y1) / (x2-x1)

m= (2+2) / (-6-6)

m= -(1/3)

Y=-(1/3)X

Can someone help me with this one math problem?
Convert 32.8% to a fraction in simplest form and a decimal.

Answers

Answer:

Step-by-step explanation:

32.8 = 164/5

= 32/4/5

as a fraction

To convert the decimal 32.8 to a fraction, just follow these steps:

Step 1: Write down the number as a fraction of one:

32.8 = 32.8/1

Step 2: Multiply both top and bottom by 10 for every number after the decimal point:

As we have 1 numbers after the decimal point, we multiply both numerator and denominator by 10. So,

32.8

1

= (32.8 × 10)

(1 × 10)

= 328/10

.

Step 3: Simplify (or reduce) the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD(328,10) = 2. So,

(328÷2)

(10÷2)

= 164/5

when reduced to the simplest form.

As the numerator is greater than the denominator, we have an IMPROPER fraction, so we can also express it as a MIXED NUMBER, thus 328/ 10

is also equal to 32/4 /5

when expressed as a mixed number.

i need help with this

Answers

The answer is C your welcome

In a 75-minute study period, Ling needed to finish a research paper she spent 3/5 of the time finishing her paper how much time did she have left to complete her history homework?

Answers

30 minutes :) I know this by adding 15 5 times to get 75. 3 times 15 is 45 plus 30 equals 75. Hope this helps. :) good luck on the test or assignment

The president of a school club would like to purchase T-shirts for members of the club and asks members which size they would like to order. The results are shown in the histogram below.

A histogram titled T-shirt sizes has size on the x-axis and frequency on the y-axis. Small, 15; medium, 22; large, 26; extra large, 5.

Which of the following is a true statement regarding the information shown in the histogram?

T-shirt size is a discrete quantitative variable.
T-shirt size is a continuous quantitative variable.
Frequency of each size is a discrete quantitative variable.
T-shirt size is a categorical variable.

Answers

Answer:

Its a categorical variable

Step-by-step explanation:

I took the test on edge

Answer:

T-shirt size is a categorical variable.

Step-by-step explanation:

I used chatopenai.com

Select all right angles

Answers

Answer:

The right angles are B,D,E,and F

Please help Geometry

Answers

Answer:

the answer is x=16

Step-by-step explanation:

trust me bro

Which of the following is true of the interquartile range on a box plot?

Answers

What are the answer choices?

Please help me please help me

Answers

The answer is the 3rd option. The equation obtained by switching….

Write an algebraic expression for each word expression:
A number h divided by 4.2

Answers

Answer:

h ÷ 4.2

Step-by-step explanation:

please help i’m failing pre calc!!!

Answers

Linear function : y = x + 4

Exponential function : y = 4.5 e^(0.144 x)

Power function : y = 4.5 x^0.415

which term describes where the three angle bisecters of a a triangle intersect

Answers

the incenter. it forms a circle

Answer:

The incenter....

Step-by-step explanation:

The point at which all three of the angle bisectors of a triangle meet is known as the incenter

dont confuse it with the circumcenter and the centroid.

i hope this helps!!!

Use the Commutative Property of
Multiplication to write a related
number sentence.
4 X 5 = 20

Answers

Answer:

5*4= 20

Step-by-step explanation:

The commutative property is a math rule that says that the order in which we multiply numbers does not change the product.

4*5 = 20

We can change to order and the result is still the same

5*4= 20

Answer:

so just think of it as you drawing circles with the number of shapes in each one like 4x6=24 draw 6 big circles and 4 squares in each one or in this case do it with 4x5

Step-by-step explanation:

Pls help me with them I will give brainilist

Answers

Answer:

All integers are rational numbers .

Step-by-step explanation:

please mark as branliest

How much money is 66 2/3% of $48.00

Answers

Answer: $32

Step-by-step explanation:

Which functions have a y-intercept that is greater than the y-intercept of the function g(x) = |x 3| 4? check three options. f(x) = –2 (x – 8)2 h(x) = –5 |x| 10 j(x) = –4(x 2)2 8

Answers

Using it's concept, it is found that the functions that have a greater y-intercept than g(x) = |x + 3| + 4 are given as follows:

h(x) = -5|x| + 10.k(x) = 0.25(x - 4)² + 4.m(x) = 0.25|x - 8| + 6.

What is the y-intercept of a function?

It is the value of the function when the input is of zero, that is, f(0).

For g(x) = |x + 3| + 4, we have that g(0) = 7. As for the other functions, we have that:

f(x) = -2(x - 8)² -> f(0) = -128.h(x) = -5|x| + 10 -> f(0) = 10 -> Greater than g(x).j(x) = -4(x + 2)² + 8 = f(0) = -8.k(x) = 0.25(x - 4)² + 4 -> f(0) = 8 -> Greater than g(x).m(x) = 0.25|x - 8| + 6 -> f(0) = 8 -> Greater than g(x).

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Mrs. ericson is building a new balcony. what is the area of the balcony? (6 ft, 6 ft, 6 ft. 2 ft, 2 ft , 2 ft.)

Answers

Answer:

2ft 2ft

Step-by-step explanation:

2ft,2ft,2ft,2ft

Please help I don’t get this:
Select the correct answer.
The weight of radioactive material, f(x),is based on the number of days the material has been exposed to the elements, X. An exponential
regression equation relative to the weight of the material is f(x) = 80.402 • 0.931^x. Based on this equation, approximately what is the weight of the radioactive material after 2 days?
OA 5
ОВ.-20
OC 28
OD. 70

Answers

Answer:

use half-life formula!

Step-by-step explanation:

for exponential word problems, lots of them use the half life formula.

hope this helps :)

Answer:

C  28

Step-by-step explanation:

:)

How do you solve for area?​

Answers

multiply the length by the width.

How to Solve 1.5 kg : 350kg

Answers

30/7

Step-by-step explanation:

1.5kg : 350g

1kg = 1000g

So, 1.5kg = 1500g

1500g : 350g

1500/350 = 30/7

The answer is 30/7.

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