Which are perfect square trinomials? Select two options.

x2 − 9
x2 −100
x2 − 4x + 4
x2 + 10x + 25
x2 + 15x + 36

Answer:

Find the highest (8.9°C) temperature and subtract it by the lowest (-13.4°C)

8.9°C - (-13.4°C) = 22.3

The difference in temperature on the coldest and warmest day is 22.3°C

Answer:

NO.

Step-by-step explanation:

The common difference is -4 and you can continue to add -4  for ever!!

Step-by-step explanation:

General equation for directly proportional variables: y = kx, where k is a real constant

When x = 8, y = 26.

Hence y = 26/8 x or y = 13/4 x.

The equation will be ; y = [tex]\frac{26}{8}[/tex] × x .

It is given that y varies directly with x and y = 26 when x = 8.

We have to find out an equation that represents this relationship.

What will be the 8 times of a number x ?

The number will 8 x.

The direct variation relationship equation will be ;

y = k × x

where ; k = a constant

Given ;

at x = 8 ; y = 26

so the value of k = 26 / 8

and the required equation will be ;

y = ([tex]\frac{26}{8}[/tex]) × x

Thus , the equation will be ; y = [tex]\frac{26}{8}[/tex] × x .

To learn more about algebraic expressions click here ;

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x=15-657/2=15-373/2=-5.316

x=15+657/2=15+373=20.316

Step-by-step explanation:

Notice that 1km = 1000m = 100000cm.

Therefore 21.7km = 2170000cm.

Answer:

2170000 cm

Step-by-step explanation:

21.7 k/m × 10³ × 10²

Answer:

the domain represents all the x values and range represents all the y value

In a function y=mx+b ( linear equation), the problem is giving the y values so plug in the value of each (y) in the equation to get x.

example: the range is : { 2,4,6} find the domain in the function y=x+1

y=x+1  take value 2

2=x+1

this goes for linear equation

Answer:

you will pay 274.75 at month 5 for both companies

company A: 42.95x+60.00

company B. 49.95x+25.00

Step-by-step explanation:

Answer:

after 5 months

Step-by-step explanation:

cost of company A =42.95 x +60  ( x for month)

cost of company B= 49.95 x  +25

42.95 x +60=49.95 x+25

42.95x-49.95x=25-60

7x=35

x=35/7= 5 months

check :

company A: 42.95(5)+60=274.75

company B : 49.95(5)+25=274.75

Answer:

8p

Step-by-step explanation:

Multiply 8 and p.

Answer:

only q or r can be irrational

Step-by-step explanation:

Rational numbers are numbers that can be expressed in the form a/b, where both a and b are integers and b ≠ 0. The decimal representation of an rational  numbers either repeats the sequence of digits over again or terminates at a finite number.

Irrational numbers are numbers that are not rational. The decimal representation of an irrational  number does not repeat a sequence of digits over again and never terminates. e.g √2, π.

The product of two irrational numbers is a rational number, the product of two rational numbers is a rational number while the product of a rational and irrational number is an irrational number. Hence since in p*q*r is an irrational number and p is a rational number, If both q and r are irrational then:

q*r = irrational * irrational = rational

p*(q*r) = rational * rational = rational. Since the result is not an irrational number then both q and r cannot be irrational.

But, If either q and r are irrational then:

q*r = irrational * rational = rational * irrational = irrational

p*(q*r) = rational * irrational = irrational. Since the result is an irrational number then only q or r can be irrational

Answer:

1) Both q and r may be rational

2) r may be rational if q is irrational

Step-by-step explanation:

I did the quiz and got it right. Also I watched the video twice. You got this!!!!

Answer:

  8

Step-by-step explanation:

Let x represent the number. Then the reciprocal is 1/x. The quotient of 25 and the number is 25/x. The problem statement tells us ...

  3 + 1/x = 25/x

Subtracting 1/x, we have ...

  3 = 24/x

  x = 24/3 = 8 . . . . . . . . multiply by x/3

The number is 8.

Answer:

25 and 49.

Step-by-step explanation:

Because 35 = 5 * 7,

35^2 = 5^2 * 7^2

= 25 * 49.

Answer:

[tex]M(h) = 7.50h + 50[/tex]

Step-by-step explanation:

Let's first get our variables straight. M is how much money you make each night, and h is the amount of hours she works.

This means that M will be what our function is equal to, aka the y-axis. h will be the x-axis.

We know that you earn a  rate of $50 per night through tax, and your hours worked doesn't influence this in any way. That means there will be a constant on this function, +50.

We also know that you earn 7.50$ per hour, which is directly influenced by how many hours you work, so we will have [tex]7.50h[/tex].

Combining this all together, we get

[tex]M(h) = 7.50h + 50[/tex].

Hope this helped!

Answer:

Ok, here we have the sequence:

0.25, 1.75, 3.75, 5.75, 7.75, …

First let's define the two most common types of sequences:

Arithmetic: The difference between any two consecutive terms of the sequence is always the same.

Geometric: In this case, the terms are created by multiplicating the previous term by a constant number (and this is for all the terms in the sequence).

Now let's try to see if this is arithmetic, to do it, we select different sets of two consecutive terms and see their difference, if all the differences are the same, then this is an arithmetic sequence:

1.75 - 0.25 = 1.5

3.75 - 1.75 = 2

5.75 - 3.75 = 2

So for the first two terms, the difference is 1.5 and for all the next ones, the difference is 2, then it is not an arithmetic sequence.

(it would be if the first term was -0.25 instead of 0.25).

Now let's try with geometric.

To see if the series is geometric, we should see the quotient of consecutive pairs of numbers, if this quotient is the same for all of them, then this is a geometric sequence:

1.75/0.25 = 7

3.75/1.75 = 2.14

Well, we can see that the quotients are different, then this can not be a geometric sequence.

Then the answer will be neither.

If we want to write a recursive rule will be like an arithmetic sequence, but with the first two terms specified as:

a₀ = 0.25

a₁ = 1.75

aₙ = aₙ₋₁ + 2 for n = 2, 3, 4, .......

Answer:

9 Days

Step-by-step explanation:

1/2x10=5

1/2x8=4

Logic tells you that 1/2x9=4 1/2

4 1/2 divided by 9= 1/2

So this answer is reasonable!!!

Please mark me brainlist!!! UwU

Answer:

There are 20 cupcakes covered with sprinkles.

Step-by-step explanation:

To find the amount of cupcakes that are covered with sprinkles you would have to subtract the amount of cupcakes covered with peanuts, the ones covered with chocolate chips and the ones covered with coconut from the total amount of cupcakes:

Total amount of cupcakes=120

cupcakes covered with peanuts=1/5*120=24

cupcakes covered with chocolate chips=1/3*120=40

cupcakes covered with coconut=36

Now, you can subtract the different cupcakes from the total amount to find the quantity left that would be the ones covered with sprinkles:

cupcakes covered with sprinkles=120-24-40-36

cupcakes covered with sprinkles=20

According to this, the answer is that there are 20 cupcakes covered with sprinkles.

Answer:

h(x) = 10y/2

Step-by-step explanation:

6x + y = 4x + 11y

6x - 4x = 11y - y

2x = 10y

divide both side by 2

x = 10y/2

h(x) = 10y/2

Answer:

Savannah's age = 6 years

Step-by-step explanation:

Let

Savannah's age = x

Dylan's age = 15

Dylan is 15, which is 3 years older than twice his sister Savannah’s age

Dylan = 2x + 3

Find Savannah's age

2x + 3 = 15

Subtract 3 from both sides

2x + 3 - 3 = 15 - 3

2x = 12

Divide both sides by 2

2x / 2 = 12 / 2

x = 6

Therefore,

Savannah's age = x

= 6 years

Dylan's age = 2x +3

= 2*6 + 3

= 12 + 3

= 15 years

Answer:

The hikers A and B travel at rates of 1.1 miles per hour and 3.3 miles per hour, respectively.

Step-by-step explanation:

Let suppose that each hiker travels at constant speed, such that kinematic formulas are, respectively:

Hiker A

[tex]x_{A} = x_{A,o}+v_{A}\cdot t[/tex]

Hiker B

[tex]x_{B} = x_{B,o} +v_{B}\cdot t[/tex]

Relationship

[tex]v_{A} =- v_{B}-2.2\,mph[/tex] (They walk toward each other)

Where:

[tex]x_{A,o}[/tex], [tex]x_{A}[/tex] - Initial and final position of the hiker A, measured in miles.

[tex]x_{B,o}[/tex], [tex]x_{B}[/tex] - Initial and final position of the hiker B, measured in miles.

[tex]t[/tex] - Time, measured in hours.

[tex]v_{A}[/tex], [tex]v_{B}[/tex] - Velocities of hikers A and B, measured in miles per hour.

Given that [tex]x_{A,o} = 0\,mi[/tex], [tex]x_{B,o} = 22\,mi[/tex], [tex]x_{A} = x_{B}[/tex] and [tex]t = 5\,h[/tex], the system of equation is reduced to the following:

[tex]0\,mi -(v_{B}+2.2\,mph)\cdot (5\,h) = 22\,mi+v_{B}\cdot (5\,h)[/tex]

[tex]-5\cdot v_{B}-11 = 22+5\cdot v_{B}[/tex]

[tex]10\cdot v_{B} = -33[/tex]

[tex]v_{B} = -3.3\,mph[/tex]

Now, the velocity of the hiker A is:

[tex]v_{A} = - (-3.3\,mph)-2.2\,mph[/tex]

[tex]v_{A} = 1.1\,mph[/tex]

The hikers A and B travel at rates of 1.1 miles per hour and 3.3 miles per hour, respectively.

Answer:

no

Step-by-step explanation:

It is x^(1/2)

Answer:

This equation is incorrect.

Step-by-step explanation:

The sqrt(x) does not equal x squared.

You can rewrite a square root to be to the one-half power.  See if this looks correct:

x^(1/2) ?= x^2

No of course these aren't equal.  Hence, this equation is incorrect.

Cheers.

Answer:

The first one

Step-by-step explanation:

It is the first one as it is just the original expanded.

It isn't the third on because the second bracket is technically - 1x-6 so it is positive.

2xa=-2a

2x-3=-6 etc.

Hope this helped!

Answer:

R2 > R1

Step-by-step explanation:

Here in this question, we want to select which of the relations best gives the answer.

Mathematically;

Power = Voltage * current

But current = voltage/resistance

Power = voltage * voltage/resistance

P = V^2/R

For 40 W

40 = (220)^2 * R1

R1 = 40/(220)^2

For 60 W

60 = (220)^2 * R2

R2 = 60/(220)^2

Mathematically, since we have the same denominator (220)^2 but with 60 greater than 40, that automatically translates to the fact that the value of R2 is greater than the value of R1( You can finish evaluating each of the expressions using a calculator).

Answer:

k=0

Step-by-step explanation:

[tex]8k = 0 \\ k = \frac{0}{8} \\ k = 0[/tex]

Answer:

k = 0

Step-by-step explanation:

8k = 0

k = 0                      Divide 8 to both sides

16. 18/8/25 = 458/25 = 18.32

17. No because it cannot be written as ratio of two numbers

18. 3/3/11 + 3.27 = 36/11 + 35.97/11

= 6/5/11

19. ( not able to answer)

20. Diameter of pizza. = 10.333333

Length of the pizza box = 10.38

10.38 > 10.33333

Therefore, the pizza box is big enough to fit the pizza inside

21. 110/147/168 = 110/49/56

22. 4/5 = 0.8

5/6 = 0.8333333..................

Therefore, the second and the fifth might be correct.

He'll buy 16 new releases and 22 classic movies.

Let x = number of new releases

Let y = number of classics.

The equation to solve the question will be:

20x + 8y = 500

When x= 16 and y = 22, thus will be:

= 20x + 8y

= 20(16) + 8(22)

= 320 + 176

= 496

Therefore, since this is the number closest to $500, therefore this will be the appropriate number of movies that he can buy.

In conclusion, he'll buy 16 new releases and 22 classic movies.

Read related link on:

https://brainly.com/question/17742381

Answer:

x = 16, y = 22

Step-by-step explanation:

Answer:

Step-by-step explanation:

AB + BC = AC

4x + 10 + 2x + 3 = 9x - 15

6x + 13 = 9x - 15

6x + 13 + 15 = 9x

6x + 28 = 9x  

3x = 28

x = 9 1/3 = 28/3

AC = 9 * 28/3 - 15

AC = 3 * 28 - 15

AC = 84 - 15

AC = 69

Answer:

symmetry with respect to the y-axis

Step-by-step explanation:

f(x) = |x| has symmetry with respect to the y-axis. It looks like a V with the vertex at the origin.

The symmetry of the function [tex]f(x)=|x|[/tex] is represented by the y-axis.

The given function is [tex]f(x)=|x|[/tex].

The function can be defined as,

[tex]f(x)=x;\;\;x\geq0\\f(x)=-x;\;\;x<0[/tex]

The function will always give the positive value of y or f(x) for all values of x.

The graph of the function is in the shape of V which is symmetric about the y-axis.

See the attached image.

Therefore, the symmetry of the function [tex]f(x)=|x|[/tex] is represented by the y-axis.

For more details, refer to the link:

https://brainly.com/question/24757478

Answer:

-5 and -3 could both work in this situation

Step-by-step explanation

-5 + 4 = -1

| -1 | = 1

-3 + 4 = 1

| 1 | = 1

Answer: it would be: y - 15

as an expression

Answer:

y-15

Step-by-step explanation:

Here it means we are removing 15 from y

Answer:data results can be interpreted in different ways

Step-by-step explanation:

Answer:

C-Data results can be interpreted in different ways

Step-by-step explanation:

Edg. 2020

here's proof