your cell bill for the last month was $148.50 and you think this seems high. If you know that you talked on your phone for 221 minutes last month, how much should your bill have been?

No, the square roots of perfect squares always do not be irrational numbers.

We need to describe whether the square roots of perfect squares always be irrational numbers.

A perfect square is a positive integer that is obtained by multiplying an integer by itself. In simple words, we can say that perfect squares are numbers that are the products of integers by themselves. Generally, we can express a perfect square as x², where x is an integer and the value of x² is a perfect square.

Irrational numbers are the set of real numbers that cannot be expressed in the form of a fraction, p/q where p and q are integers. The denominator q is not equal to zero (q ≠ 0).

So, the square roots of perfect squares are rational numbers and can be placed on a number line. The square roots of non-perfect squares are irrational numbers.

No, the square roots of perfect squares always do not be irrational numbers.

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Answer:

[tex]y=-\frac{2}{5}x-3[/tex]

Step-by-step explanation:

Write in slope-intercept form,  y = m x +b .

Answer: m = -0.4

Step-by-step explanation: -7 - (-1) = -6 and 10 - (-5) =15, m=y/x so -6/15 equals -0.4.

Hope this helps!

Answer:

32

Step-by-step explanation:

Use the given functions to set up and simplify  f (− 2 ) .

First,

Write the problem as a mathematical expression

Then,

Replace the variable  x  with  − 2  in the expression.

Answer:

The answer is 24

Step-by-step explanation:

You would get this by plugging in -2 for X

2(-2)3(-2)

Then with PEMDA do parenthesis first

So (-4)(-6)

Then multiply the final together and you would get..

24

This is because two negatives equal a positive when multiplying.

Answer:

Top right graph.

Step-by-step explanation:

In order for a graph to be a function, it must pass the Vertical Line Test. All the graphs fail to pass the Vertical Line Test except for the top right graph.

Each x-value must have only 1 y-value. No 1 x-value can hold 2 y-values.

Answer:

C) A = [tex]3w^{2} - 4w[/tex]

Step-by-step explanation:

First, read through what the question is asking.

Now, read it again, but slowly and take in everything it is saying (Don't read into it too slowly, or else you will over-complicate the problem and get frustrated - told from experience :) )

Alright, 4 less than 3 times the width. So, lets rearrange this and give width a variable (w).

So, the length is equal to:

l = 3w - 4

and the width is equal to:

w = w

The area of a rectangle is A = l * w

Let's plug in the values.

A = (3w - 4) * w

Now, simplify:

A = [tex]3w^{2} - 4w[/tex]

A = [tex]3w^{2} - 4w[/tex] is your final answer.

I hope this helps!

The solution is ± √5

The value of the equation is given by x = ± √5

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is given by

x² = 5   be equation (1)

On simplifying the equation , we get

x² = 5

Taking the radical form , radical notation is the usage of a root in an expression, such as the square or cube root

So , taking square roots on both sides of the equation , we get

The value of x = ±√5

Therefore , the value of A is ±√5

Hence , The value of the equation is given by x = ± √5

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I believe it is 50 degrees

Explanation:

180-115 = 65 degrees

Since the base angles of of an isosceles triangle are equal,

Angle C =angle A= 65 degrees

65 times 2 = 130

180-130=50

50 degrees=measure of angle B

Hope this helps

I think the independent variable is the number of the students who attend the fiesta and the dependent variable is the amount of food there will be at the fiesta

Answer:

14.92 ^-^

Step-by-step explanation:

Answer:

If I am correct the answer should be graph it !!!! first quadrant

corners

(0,0)

(0,3)

(1.5 , 3.5) intersection

(5,0)

evaluate 6x-4y at those corners

0

-12

-5

+9

makes sense, need big x and small y :)

Step-by-step explanation:

I apologize if I am incorrect I am only in 7th grade but I am pretty intelligent so please try it out!

Answer:

The event x is a discrete random variable because the values of the random variable are countable and each possible outcome is equally likely

Step-by-step explanation:

A) Explaining why x is a discrete random variable

 The event x is a discrete random variable because the values of the random variable are countable and each possible outcome is equally likely. A discrete random variable is variable that contains a countable number of values contained in it and each value stands an equal chance i.e The probability of each value/outcome is between 0 and 1

Answer:

21 to 35

Step-by-step explanation

I aced the test

Answer:

B: Negative

Step-by-step explanation:

-2/1 is the slope which is negative.

Answer:

option A 11820 ok thankyou ☺️

Answer: it is a non viable solution

If the length is less than 5 then the width (x - 5) will be less than zero. A rectangle with no width does not exist so this solution is non-viable.

Answer:

non-viable

Step-by-step explanation:

Answer:

y=1/3x+2

Step-by-step explanation:

To solve, you plug in each vaule for x and y in the table. If it is a true statement for more than 1 answer, thats the correct answer

Answer: C

Step-by-step explanation:

I had this question before

Answer:

Let the parts be given as x,

180° = 3x + 1x + 4x (Because a straight angle = 180°)

=> 180° = 8x

=> 180 / 8 = x (By the law of transposition)

=> 22.5 = x

Therefore the three different angles are :

67.5° , 22.5° , 90° respectively

Check,

=> 67.5 + 22.5 + 90

=> 90 + 90

=> 180°

If my answer helped, please mark me as the brainliest!!

Thank You!

Answer:

110 degrees

Step-by-step explanation:

it is 110 degrees because on a line comebinedt is 180 degrees. And you already ahve one side which is 70 degrees. So 180 minus 70 is 110 degrees.

Answer:

m5 would be 110 degrees

Step-by-step explanation:

so basically all you have to do for that problem is subtract 70 from 180

Answer:

Step-by-step explanation:

Plug in the x

f(2) = 3(-4)-6

2 = -12 - 6

2 = -18

Answer:

second one

Step-by-step explanation:

Answer: C

Step-by-step explanation: BD And CE are 4 each, so you add those together and it’s 8 then add 5 which is 13 and add 2.5 which gives you 15.5 which is C

Answer:

Question 1

9|x/4| -10=8 Answer- x= (8,-8)

Question 2

4+|3x+3|=28  Answer- x=(7,-9)

Question 3

4|x-9|+7=67  Answer- x=(24,-6)

Step-by-step explanation:

Answer:

The correct option is  B

Step-by-step explanation:

From the question we are told that

   The  sample size is  [tex]n  =  64[/tex]

    The  proportion that choose to vaccinate the teen boys is  [tex]\r p =  0.12[/tex]

considering the first statement

The 95% confidence interval is 12% ± the margin of error*standard deviation is  false because

The 95% confidence interval is is  %12 ± the margin of error

considering the second statement

The confidence interval should not be calculated due to the small sample size is true because from the central limit theorem

   np =  64 * 0.12 =  7.68

and this value is  less than 10  hence the confidence interval should not be calculated

considering the third statement

A 99% confidence interval will be smaller than the 90% confidence interval is false

  This is because as the confidence level increase (for example  from 90% to  99%) the margin of error increase which increases the confidence interval  

Answer:

3/8

Step-by-step explanation:

find the Least Common Denominator, change the numerators as needed, divide, then simplify.

Answer:

the answer is 3/8

Step-by-step explanation:

brainiest rate 5 stars and thank mee : )

Answer:

D

Step-by-step explanation:

collect like terms and divide by -11

Answer:

The graph is attached down

Step-by-step explanation:

The form of the linear inequality is y < b + m x, where

To find which graph represents the inequality y < -1 + 2x

→ Find the y-intercept (the value of y at x = 0)

∴ b = -1

∴ The y-intercept is (0, -1)

From the given graphs we have two graphs that the line intersected the y-axis at (0, -1)

2nd graph in the 1st row

2nd graph in the 2nd row

∵ The sign of inequality is <

∴ The shaded area must be under the line

∴ The 2nd graph in the 1st row is our answer

The graph which represents the inequality y < -1 + 2x is attached down

Answer:

15

Step-by-step explanation: