What substitution should be used to rewrite 4x4 – 21x2 + 20 = 0 as a quadratic equation?

Answers

Answer 1

35

Step-by-step explanation:

= 32+20-21

= 52-21

= 31

Answer 2

Answer:

u = x^2

Step-by-step explanation:

on edg 2020


Related Questions

Which expressions below equal a rational number? Select all that apply.
Orx4
2.4
375
136 + 15
3 - 3
(149)(7)

Answers

Answer:

  B, D, E

Step-by-step explanation:

A: simplifies to 2π. Multiplying the irrational number π by 2 does not result in a rational number.

B: the sum of two rational numbers is always rational

C: simplifies to 6+√5. The sum of a rational number and an irrational number is always irrational

D: simplifies to 0, a rational number

E: simplifies to 7, a rational number

18 people in a group of
24 do not have a hat on.
What is the ratio of people
wearing a hat to those not?

Answers

Answer:

[tex]\frac{3}{4}[/tex] of the people are not wearing a hat and [tex]\frac{1}{4}[/tex] of the people are wearing a hat.

Step-by-step explanation:

Carlie generates the table of values shown below in order to graph and solve the inequality 3^2x-1 < 27.


A 2-column table with 4 rows. Column 1 is labeled x with entries 0, 1, 2, 3. Column 2 is labeled y with entries one-third, 3, 27, 243.


What is the solution set for the exponential inequality?


(–∞, 2)

(2, ∞)

(–2, 2)

(–∞, 2) ∪ (2, ∞)

Answers

Answer:

answer is a

Step-by-step explanation:

The solution set for the exponential inequality is (- ∞, 2).

What is an inequality?

"An inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions."

The given inequality is

[tex]3^{2x - 1}[/tex] < 27

⇒ [tex]3^{2x}/3[/tex] < 3³

⇒ [tex]3^{2x}[/tex] < 3³ × 3

⇒  [tex]3^{2x}[/tex] < [tex]3^{4}[/tex]

⇒ 2x < 4

⇒ x < 2

Therefore, the solution is (- ∞, 2).

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30.597/47
please help me

Answers

30.597/47 = 0.651
so 0.651 is your answer
0.651 is the answer it is correct j

PLEASE HELP!
What is m<3???

Answers

Answer:

105°

Step-by-step explanation:

180 minus 75 from angle 6 would give you angle 3.

4. A savings account of $5,000 for
12 years, compounded at an annual
interest rate of 6%.

Answers

6 percent of 5000 is 300 so 300 times 12 is 3,600 so your final answer is 3,600

The formula for the length of the hypotenuse in a right triangle is \sqrt{a^2+b^2} a 2 +b 2 ​ square root of, a, squared, plus, b, squared, end square root where aaa and bbb are the lengths of the triangle's sides (this formula is derived from the Pythagorean theorem). From the side, a certain ramp has a right-triangular shape. Its height is 303030 centimeters and its horizontal length is 333 meters. What calculation will give us the estimated length of the ramp in meters?

Answers

Answer:

The answer is A

Step-by-step explanation:

Answer:

A.) 30^2/100^2+3^2

Step-by-step explanation:

pls help i need this done as quick as possible

Answers

Answer:

Infinite Solutions.

Step-by-step explanation:

[tex]m+7=3+m+4[/tex]

Subtract m from both sides:

[tex]m+7-m=3+m+4-m[/tex]

[tex]7=3+4[/tex]

[tex]7=7[/tex]

Both sides are equal.

This means that the value of m does not affect the end result of 7 = 7, which is true. Thus, there are infinite solutions as any value of m will still make the equation true.

Answer:

Infinite Solutions

Step-by-step explanation:

Hope this will help

Problem 5 Answer Choices (SELECT ALL THAT APPLY)
1
Problem #5
Select all of the numbers that
David could multiply by 300 to
get a product less than 300.

Answers

Answer:

any number less than one multiplied by 300 would be less than 300

In 2009, Usain Bolt set the world record for sprinting 100 m in approximately 9 3/5 seconds. Find his average speed in meters per sound.

Answers

Answer: 10 5/12 meters per second

Step-by-step explanation:

distance = rate (time)

100= r( 9 3/5)

r=10 5/12

10.417 to be closer to your awnser♥️♥️ have a great day

2(x-3)+9=3(x+1) +x what is x

Answers

Answer: 3

Step-by-step explanation: Simplifying

2(x + -3) + 9 = 3(x + -1) + x

Reorder the terms:

2(-3 + x) + 9 = 3(x + -1) + x

(-3 * 2 + x * 2) + 9 = 3(x + -1) + x

(-6 + 2x) + 9 = 3(x + -1) + x

Reorder the terms:

-6 + 9 + 2x = 3(x + -1) + x

Combine like terms: -6 + 9 = 3

3 + 2x = 3(x + -1) + x

Reorder the terms:

3 + 2x = 3(-1 + x) + x

3 + 2x = (-1 * 3 + x * 3) + x

3 + 2x = (-3 + 3x) + x

Combine like terms: 3x + x = 4x

3 + 2x = -3 + 4x

Solving

3 + 2x = -3 + 4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-4x' to each side of the equation.

3 + 2x + -4x = -3 + 4x + -4x

Combine like terms: 2x + -4x = -2x

3 + -2x = -3 + 4x + -4x

Combine like terms: 4x + -4x = 0

3 + -2x = -3 + 0

3 + -2x = -3

Add '-3' to each side of the equation.

3 + -3 + -2x = -3 + -3

Combine like terms: 3 + -3 = 0

0 + -2x = -3 + -3

-2x = -3 + -3

Combine like terms: -3 + -3 = -6

-2x = -6

Divide each side by '-2'.

x = 3

Simplifying

x = 3

the length of a rectangle is five times the width. if the area of the rectangle is 125 square inches, find the length and width​

Answers

Length: 25
Width: 5
25 divided by 5=5
25x5=125

The Blue Ridge Parkway is 469 miles long. The parkway is a road that runs through 29 Virginia and North Carolina counties. Jenny drove 3/5 of the parkway on vacation. How many miles did she drive? Simplify your answer and state it as a mixed number.

Answers

Answer:

281/2/5 miles

Step-by-step explanation:

469/5 = 93.8

93.8x3 = 281.4

            = 281/2/5 miles

Please mark as Brainliest, thank you!

The miles did she drive is 281/2/5 miles.

It is required to find the miles did she drive.

What is arithmetic?

Arithmetic is the branch of mathematics that deals with the study of numbers using various operations on them. Basic operations of math are addition, subtraction, multiplication and division. These operations are denoted by the given symbols.

Given:

The Blue Ridge Parkway is 469 miles long.

Jenny drove 3/5 of the parkway on vacation.

According to given question we have

The miles did she drive

=469*3/5

=  281/2/5 miles

Therefore, the miles did she drive is 281/2/5 miles.

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why are the factors in your multiplication sentences in a different order​

Answers

In multiplication, the order doesn't matter.

2 rows of 7 and 7 rows of 2 is the same.

If you have seven 2's, that's the same as two 7's.

See here:

2 + 2 + 2 + 2 + 2 + 2 + 2 = 14

7 + 7 = 14

Or:

2 * 7 = 7 * 2 = 14

The smallest number that must be added to 1300 to make it a perfect cube is
a. 42
b. 36
c. 25
d. 31

Answers

Answer:

d. 31.

Step-by-step explanation:

11^3 = 1331

31.


Find the solution set to this inequality:
6m+2<5m- 4
O im m: 6
0 mm 2
(
mm2)
mm 6

Answers

Answer:

vruu

Step-by-step explanation:

skvnrwniohwrigjqepvpoqepmveppiehpihuorhg8hginvknkcmksmlkqslqbyftdrses6duguhojcfxzwexyvyih8ttde5setvjmpokuigcfxdetguinjnh fxtrfyhbh c

[tex]\int\limits^a_b {x} \, dx \int\limits^a_b {x} \, dx x^{2} \frac{x}{y} \pi \int\limits^a_b {x} \, dx \sqrt{x} \frac{x}{y} \frac{x}{y} x^{2} x^{2}[/tex]

Please help with this I’m garbage at math:/

Answers

Answer:

Thale's theorem stated that if a line parallel to the base of the triangle intersects it, the ratio of sides of the respective sides is equal

In this diagram, since the 2 horizontal lines are parallel

the ratio of the 2 sides on the left and the 2 sides on the right will be equal

Hence,

x/15 = 2/10

x = 30/10

x = 3

13=3g-2(-5+g) (solve for g)

Answers

Answer:

g = 3

Step-by-step explanation:

13=3g-2(-5+g)

3g-2(-5+g)  = 13     {Use distributive rule}

3g - 5*(-2) + g(-2) = 13

3g + 10 -2g  = 13           {Combine like terms}

3g - 2g + 10 = 13

         g + 10 = 13          {subtract 10 from both sides}

                g = 13 - 10

g = 3

A lemon aid stand sells 14 gallons of lemon aid in 3 hours how many halls can they expect to sell after three, eight hour days?

Answers

Answer:

112 gallons

Step-by-step explanation:

Step 1:

3 × 8        Equation for finding how many hours in the 3 days

Step 2:

24 hours    Multiply

Step 3:

14 ÷ 3       Equation to find how many gallons per hour

Step 4:

4.66666666667    Divide

Step 5:

4.66666666667 × 24      Equation

Answer:

112     Multiply

Hope This Helps :)

I need help this is due by 3pm!!!!! multiplying fractions,brainly if correct.

Answers

Answer:

2 3/4

Step-by-step explanation:

BRAINLIEST
I NEED HELP
SUPER HARD

Write a rule
for a nonlinear function such that y is negative when x = 1, positive when x=2,
negative when x=3, positive when x = 4, and so on.

Answers

Answer:

We know that a negative value is positive of all even exponents and negative for all odd exponents.

y=(-1)^x

HELP, this is due in 20 minutes!!!!PLEASE

The diagram contains contradictory information. Explain the contradiction.

A. Since When you solve for x, you get 0=180. This is equally not valid.

B. Since When you solve for x, you get x=30.
This would make m An angle cannot measure 0 degrees, because it would not exists.

C. Since When you solve for x, you get 0=180.
This equality is not valid.

D. Since When you solve for x, you get x = 30.
This would make m An angle cannot measure 0 degrees.

Answers

The answer is B. If you solve the equation to equal each other, it would be 3 times 30 and then be 90=90 which would equal a 0 degree angle, which are not existant.

What is the solution set for the exponential inequality (1/2)^2x+1<4
A.(0, 4)
B.(0, ∞)
C.{-3/2,4}
xxxxD.{-3/2,infinity)

It's D

Answers

Answer:

Answer is choice D.   [ -3/2, ∞)

Step-by-step explanation:

correct on edg

The interval notation for the given exponential inequality is (-3/2, ∞).

The exponential inequality is [tex](\frac{1}{2} )^{2x}+1 < 4[/tex].

What is an exponential inequality?

Exponential inequalities are inequalities in which one (or both) sides involve a variable exponent. They are useful in situations involving repeated multiplication, especially when being compared to a constant value, such as in the case of interest.

Now, the given exponential inequality can be solved as follows:

[tex](\frac{1}{2} )^{2x}+1 < 4[/tex]

⇒ [tex](\frac{1}{2} )^{2x} < 3[/tex]

⇒ [tex]\frac{1}{2^{2x} } < 3[/tex]

Multiply [tex]2^{2x}[/tex] on both the sides of the inequality.

That is [tex]\frac{1}{2^{2x} } .2^{2x} } < 3.2^{2x} }[/tex]

⇒ [tex]1 < 3.2^{2x} }[/tex]

Solve for x

[tex]x=\frac{ln \frac{1}{3} }{2 ln 2}[/tex]

The solution consists of all of the true intervals.

[tex]x > \frac{ln \frac{1}{3} }{2 ln 2}[/tex]

Interval Notation: (-3/2, ∞)

Therefore, the interval notation for the given exponential inequality is (-3/2, ∞).

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!! PLEASE HELP !!
What is the expression in radical form?
(3p^3q)3/4

Answers

Answer:

A

Step-by-step explanation:

Recall that if we are given fractional exponents, we can use the following property:

[tex]\displaystyle x^{ {}^{a}\!/\! {}_{b}} = \sqrt[b]{x^a}[/tex]

We are given the expression:

[tex]\displaystyle (3p^3q)^{ {}^{3}\!/\! {}_{4} }[/tex]

Use the above property, this yields:

[tex]=\sqrt[4]{(3p^3q)^3}[/tex]

Using the power of a power property, we can simplify this to:

[tex]=\sqrt[4]{(3^3)(p^3)^3(q)^3}[/tex]

Simplify:

[tex]=\sqrt[4]{27p^9q^3}[/tex]

In conclusion, our answer is A.

Do 1. Lucas makes the statement: "The exterior angles of a triangle are always
obtuse." of the following, which provides a counterexample to the statement?
о
Right Triangle
&
Acute Triangle
Equilateral Triangle
о o
Isosceles Triangle
CLEAR ALL

Answers

Answer: A) Right Triangle

The exterior angle to the 90 degree interior angle is 90 degrees because 90+90 = 180. So this exterior angle is not obtuse.

The equilateral triangle always has an obtuse angle and for the isosceles triangle, it may be obtuse or acute.

What is an exterior angle?

The angle is formed by a polygonal side and its extended neighboring side. When a transversal cuts one of two lines, it creates an angle that is outside of the line.

A polygon with three edges and three vertices is called a triangle. It is one of the fundamental geometric shapes. Triangle ABC is the designation for a triangle with vertices A, B, and C.

Equilateral triangle always has an obtuse angle and for the isosceles triangle, it may be obtuse or acute.

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vertical angles are ____?

a. parallel

b.supplementary

c.complementary

d.congruent

Answers

Answer:

congruent.. because they are opposite another..

Answer:

Parallel

Step-by-step explanation:

Parallel means they don't touch. So, when they are going straight they will never curve or touch each other in the process.

You are going to decorate one wall of your bedroom by putting neon lights along the top. The wall is a square wall with an area of 256 inches. What is the length of the lights you need for the top of this wall? How long would the lights need to be if you wanted to go all the way around the wall?
can you guys answer both ? iof need it before 12 .

Answers

Answer should be 36 ft

10 points please help ASAP

Answers

1. Corresponding angles. (upper left) 2. Alternate interior angles. ( upper right)

3. Alternate exterior angles. ( bottom left)

4. consecutive interior angles. ( bottom right)

URGENT!! 50 POINTS FOR CORRECT ANSWER WITH EXPLANATION!!!

Segment has endpoints M(−2, 3) and N(−4, −2). What is the slope of the line parallel to the segment MN, and what is the slope of the line perpendicular to the segment MN?

Answers

Answer:

the answer is -5/2

hope it helps you mate..

please mark me as brainliast

The term test grades for an introductory calculus class was aggregated into
intervals of 10% to construct a relative frequency distribution. Suppose we
know the mean is 56% and the median is 40%. What would be true about the
center and the spread?​

Answers

Answer:

its the same

Step-by-step explanation:

you read

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