can you substitute 2x+3y=4 and y=2

Z score of a 3rd grader who is 47 inches tall with mean of 52 inches and standard deviation of 2.5 inches is  2

Z- Score give an idea how far a data point is from mean .

z = x- μ / σ where numerator is difference between the random variable and the actual mean dividing by the standard deviation .

Given , x = 47 inches

standard deviation = 2.5 inches

mean = 52 inches

z-score = x- μ / σ

putting all the values ,

z-score = 47 - 52 / 2.5

= -5 / 2.5

= -2

|Z| = 2

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The expression that is equivalent to xy^2/9 is [tex]x\sqrt[9]{y^{2} }[/tex] , the correct option is (d) .

an Algebraic Expression is defined as an expression that is written using the combination of variables and numbers joined by mathematical operators .

For Example : 2x+ 3y , 3y , 2xy are all algebraic expressions .

In the question ,

it is given that ,

the algebraic expression is xy^2/9 ,

we need  to find an equivalent expression to the given expression .

we know that the x^(1/n) is written as [tex]\sqrt[n]{x}[/tex] .

So , xy^2/9 = [tex]x.(y^{2})^{\frac{1}{9} }[/tex] =  [tex]x\sqrt[9]{y^{2} }[/tex]

Therefore , The expression that is equivalent to xy^2/9 is [tex]x\sqrt[9]{y^{2} }[/tex] , the correct option is (d) .

The given question is incomplete , the complete question is

Which expression is equivalent to xy^2/9 ?

(a) √(xy⁹)

(b) [tex]\sqrt[9]{xy^{2} }[/tex]

(c) x(√y⁹)

(d) [tex]x\sqrt[9]{y^{2} }[/tex]

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Answer:

x = 5

Step-by-step explanation:

I'm going to assume that this is asking you to graph in Slope-Intercept form, but if I am mistaken, comment on my answer and I will happily change it.

Slope-Intercept form:

y = mx + b

You leave y and x as variables, while m and b are to be substituted for slope and y-intercept. y-intercept is when x=0, where a point on a line is on the y axis.

To help you learn, for example, we have an equation is slope-intercept form:

y = 8x + 3

In this case, the slope is 8 and the y intercept is 3 as m is the slope and b is the y-intercept.

The slope is the steepness of the graph. The value of the slope is how much the y-value increases if the x-value increases by 1.

We can find the slope from 2 points using this formula:

[tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]

So, we plug in our points into the formula.

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

Simplify.

[tex]\frac{-5}{0}[/tex]

Anything divided by 0 is undefined. This means the line we are graphing is completely vertical, known as undefined. We can only get this if the x value stays the same no matter what. In this case, the x value stays the same when the y value changes, meaning a undefined slope.

We have a special case here. If the slope is undefined, we do not use y = mx+b. Instead, we use:

x = what the x values of the 2 points are

x values of both points: 5

x = 5

Answer:

8.00am

Step-by-step explanation:

from 12 at night to 12 noon the time notation for 24 hrs and 12 hrs stay the same

The equation of the blue line in the given graph is y = -x/2 + 2   .

In the question ,

a line graph is given,

we have to find the equation of the blue line .

to find the equation of line , we need at least two points ,

So , from the graph we can see that the two points from where the blue line passes the graph are (4,0)  and (0,2) .

the slope = (2-0)/(0-4)

m = 2/(-4)

m = -1/2

So , the equation of the line passing from the points (4,0) with slope -1/2 , is

(y - y₁) = m(x - x₁)

y - 0 = (-1/2)(x - 4)

y = -x/2 + 2

Therefore , The equation of the blue line in the given graph is y = -x/2 + 2   .

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Answer:

0.5625

Step-by-step explanation:

18/32=0.5625

Answer:

good i will buy          

Step-by-step explanation:

Answer:

$2.54

Step-by-step explanation:

2 qaurt = 8 cups

20.32/8=$2.54 percup

Answer:

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

1. calculate discount

30/100 × 58 = 17.4

2. calculate sell price

58 - 17.4 = 40.6

3. calculate sales tax

7/100 × 40.6 = 2.842

4. calculate total price

sell price + sales tax = 40.6 + 2.842 = 43.442

The length of the line is 18 units.

If there are two point P( a, b) and Q (c, d) then the distance between P and Q is

d= √ ( c- a)² + ( d- b)²

Given points: ( -10 ,9 ) and ( 5, -1)

So, the distance between these two points

Using Distance formula

d= √ ( c- a)² + ( d- b)²

d = √(5 - (-10))² + (- 1- 9)²

d= √15² + (-10)²

d= √225+ 100

d= 18. 027 units

Hence, the length of the line is 18 units.

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Answer:

The solution to this problem is option (B) - 18 units

Step-by-step explanation:

I took the test and the test told me the answer is 18 so hence, choose option (B) as your answer.

Hope this helped:)

There is a 13.3% chance that a sample of 200 U.S students in grades 9 through 12 who attend public and private school will have 11% or fewer obese students if 13.7% of the population is obese this year.(Option D)

Given:

The 2013 national youth risk behavior survey (yrbs) reported that 13.7% of u.s. students in grades 9 through 12 who attend public and private school were obese.

consider the random sample:

200 US students

11% are obese.

Null hypothesis:

Null hypothesis = 13.7%

= 13.7/100

= 0.137

Alternative hypothesis = p < 0.137.

Therefore the null hypothesis = 0.137.

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Angles ∠4 and ∠6 are the same side interior angles.

Interior angles are defined as the inner of two angles formed when two sides of a polygon intersect. Any of the four angles are formed when a third line intersects a pair of parallel lines.

If two angles are on opposite sides of a transversal, they are alternate. A transversal is a line that runs parallel to two horizontal lines. The alternate angles are alternate interior angles if they are located between the two parallel lines. The alternate angles are alternate exterior angles if they are located outside of the two parallel lines.

Angles ∠4 and ∠6 are known as alternate interior angles based on the information provided. As a result, you have the following options:

They are located on opposing sides of the transversal.

They are located between the two lines crossed by the transversal.

Therefore Angles ∠4 and ∠6 are the same side interior angles.

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ΔABC is not a right angled triangle.

What is right angled triangle?

A right-angle triangle is one that has angles between its two sides that equal 90 degrees.

Main Body:

First let's find the length of the last side. We can do this by adding AB and BC together, then subtracting this amount from the perimeter of Triangle ABC, 22 cm.

ABC - (AB + BC) ⇒ 22 - (8 + 5)

                             =22 - 13 = 9 cm

The hypotenuse is always the longest side of a triangle, so we know that the side we figured out is the hypotenuse. Now we can use the Pythagorean Theorem to see whether the triangle is a right triangle.

Pythagorean Theorem: a² + b² = c², where a and b are legs and c is the hypotenuse.

If a² + b² do equal c², then the triangle is a right triangle.

⇒8² + 5² = 9²

⇒64 + 25 = 81

⇒89 > 81

Therefore triangle is not a right triangle, but we know that it is obtuse since a and b together are longer than c.

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Answer:

A See work below

B  7.07

C [tex]\sqrt{50}[/tex]

Step-by-step explanation:

[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]

[tex]5^{2}[/tex] + [tex]5^{2}[/tex] = [tex]c^{2}[/tex]

25 + 25 = [tex]c^{2}[/tex]

50 = [tex]c^{2}[/tex]

[tex]\sqrt{50}[/tex] = [tex]\sqrt{c^{2} }[/tex]

[tex]\sqrt{50}[/tex]  = c  This is the exact answer.  [tex]\sqrt{50}[/tex] is an irrational number.  This means that it never terminates or repeats in the decimal form.

[tex]\sqrt{50}[/tex] ≈ 7.07 Rounded

Answer(s):

[tex]5\sqrt{2}[/tex] and [tex]7.07[/tex]

Step-by-step explanation:

substitute a=5 and b= 5 into Pythagorean Theorem:

[tex]a^2+b^2=c^2\\(5)^{2}+ (5)^{2} = c^2[/tex]

Simplify:

[tex]25+25=c^{2}[/tex]

[tex]50=c^{2}[/tex]

square root of c^2 and 50

[tex]\sqrt{50} =\sqrt{c^2} \\\\\sqrt{50} =c[/tex]

Use prime factorization to reduce [tex]\sqrt{50}[/tex] to [tex]5\sqrt{2}[/tex]

So here are the answers:

Radical form [tex]5\sqrt{2}[/tex]

Rounded to nearest hundredth: [tex]7.07[/tex]

Hope this answer helps :)

The correct statements are

The expression is

3y(7 + 2x) + 9xy -10

The expression is the mathematical statement that consist of different variables, numbers and mathematical operators. The mathematical operators are addition, subtraction, division and multiplication

The expression is

3y(7 + 2x) + 9xy -10

From the expression 3y is the first term is a factor and (7+2x) is also the first term is a factor

Therefore,

The 3y in the first term is a factor.

The (7 + 2x) in the first term is a factor.

Consider the second term

The 9 in the second terms is a coefficient

Last term 10 is a constant, but there is not suitable statement is given

Hence, the correct statements are

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The area of the circular table is 1075.21 square inches.

Jada has a table. The table is circular in shape. She paints the table. The diameter of the circular table is 37 inches. We need to find out the area of the table. We will, first of all, find the radius of the circular table. Let the radius and the area of the table be represented by the variables "r" and "A", respectively.

The radius of a circle is equal to half its diameter.

r = 37/2

r = 18.5 inches

To find the area of the table, we will use the formula for the area of a circle.

A = πr²

A = π(18.5)²

A = 1075.21

Hence, the area of the circular table is 1075.21 square inches.

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The first system of equations has no solution and the second set of equations has a unique solution.

If we are having two equations as

[tex]a_{1} x^{2} +b_{1} x+ c_{1} =0[/tex]

and [tex]a_{2} x^{2} +b_{2} x+ c_{2} =0[/tex]

The condition at which these equations will have infinitely many solutions is

[tex]\frac{a_{1} }{a_{2} } =\frac{b_{1} }{b_{2} } =\frac{c_{1} }{c_{2} }[/tex]

The condition at which these equations will have infinitely many solutions is

[tex]\frac{a_{1} }{a_{2} } =\frac{b_{1} }{b_{2} } \neq \frac{c_{1} }{c_{2} }[/tex]

For, the 26th question, we have

4x +8y = -8

4x +8y +8 = 0

x +2y +2 =0 equation(1)

x =-2y +1

x +2y -1 = 0 equation(2)

On comparing these equations with the general form, we have

[tex]a_{1} = 1, a_{2} =1\\b_{1} = 2, b_{2} = 2\\c_{1} = 2, c_{2} = -1[/tex]

So, [tex]\frac{a_{1} }{a_{2} } =\frac{b_{1} }{b_{2} } \neq \frac{c_{1} }{c_{2} }[/tex]

Thus, this system of equations has no solution.

Now, For the 27th question, we have

2x - 3y = 6

2x -3y -6 = 0 equation(3)

[tex]y = \frac{2}{3}x -2 \\\\3y = 2x -6\\\\3y -2x +6 = 0[/tex] equation (4)

On comparing these equations with the general form, we have

[tex]a_{1} = 2, a_{2} =3\\b_{1} = -3, b_{2} = 2\\c_{1} = -6, c_{2} = 6[/tex]

So, [tex]\frac{a_{1} }{a_{2} } \neq \frac{b_{1} }{b_{2} }[/tex]  

Thus, this system of equations has a unique solution.

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Slope intercept form become C = 10 + 0.20m

What do you mean by linear equation?

A linear equation is one that has a degree of 1 as its maximum value. No variable in a linear equation, thus, has an exponent greater than 1. A linear equation's graph will always be a straight line.

Both linear equations with one variable and those with two variables exist.

The standard form or the general form of linear equations in one variable is written as, Ax + B = 0; where A and B are real numbers, and x is the single variable.

Slope intercept form is y =  mx + c where m is the slope and c is the y-intercept.

It is given that an Uber driver charges a $10 pick-up fee plus $0.20 per mile.

Let m be the total miles.

According to question, the equation become

Total charges, C = 10 + 0.20m

Therefore, slope intercept form become C = 10 + 0.20m

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Answer:

The answer is eleven. 11

You could stand at 7 feet and still be completely in the shadow of the tree.

What is the property of a similar triangle?

Two triangles are similar if their corresponding angles are equal and their corresponding sides are within the same ratio (or proportion).

Given

You are standing such that a 63-foot tree is directly between you and the sun.

If you are standing 240 feet away from the tree and the tree casts a 270-foot shadow.

BC to be the height of the tree and DE to be the height of how tall you could be and still be completely in the shadow of the tree.

∠D = ∠B = 90 degrees

Therefore,

By the similar triangle property;

DE/BC = AD/AC

x/63 = (270-240)/270

x/63=30/270=0.11

x=63*0.11 = 7

Hence, you could stand at 7 feet and still be completely in the shadow of the tree.

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Answer:

B

Step-by-step explanation:

Answer: (0,9)

Step-by-step explanation:

4-2=2

2-2=0

3+3=6

6+3=9

or just put this into the calculator on the table button

The Verdicts on each value of u according to the given inequality are as follows; 11, 13 and 8.

It follows from the task content that the values which are solutions to the inequality; u ≤ 13 are to identified.

To determine the solution of an inequality on a number line, the number line representation of such inequality is very pivotal.

Therefore, the inequality given; u ≤ 13 simply implies that; the solution set of u includes 13 and all numbers to the left of 13 on the number line.

Hence, by considering each of the given values of u; we have;

Ultimately, the solutions to the inequality among the answer choices are; 11, 13 and 8 respectively.

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Answer: 43/5

Step-by-step explanation: I multiplied the 5 and 8, which gave me 40. Then I added 3 and got 43/5.

Answer:

25.2 miles per gallon

Step-by-step explanation:

[tex]\frac{31.5}{1.25}[/tex]

The expression for the area of the given figure is: 18x

Given, figure:

we are asked to determine the area of the expression of the given figure.

Label the given figure and join the points G and C

Draw the required figure.

Observe that from the figure that, the shape consists of a square ABCG and rectangle FCDE.

Find the area of the given shape.

area of the given shape = ar(ABCG) + ar (FCDE)

= 3 × x × 6

= 18x

Therefore, the expression for the area of the given figure is 18x.

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A continuous function that has a domain of [-3, 4]  will include all the values as -3,-2,-1,-0,-1,-2,3,4

What do you mean by continuous function?

In mathematics, a continuous function is one where a continuous variation of the argument results in a continuous variation of the function's value (i.e., a change without a leap). This indicates that there aren't any discontinuities, or sudden changes in value. More specifically, a function is continuous if it is possible to guarantee that its value will not vary significantly even with arbitrarily tiny changes to its parameter. Any function that is not continuous is said to be discontinuous.

It is given that a continuous function has a domain of [-3,4]

According to the definition of closed interval,

[-3,4] will contain all the elements between them and including them.

Therefore, [-3,4] will contain elements as -3,-2,-1,-0,-1,-2,3,4

Hence, a continuous function that has a domain of [-3, 4]  will include all the values as -3,-2,-1,-0,-1,-2,3,4

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The unit rate of the cost of the fluid per ounce is $0.11

How to calculate the cost of the fluid per ounce ?

Chee buys two pint bottle of juice

The two pints costs $3.52

The unit rate of the cost of the juice per fluid ounce can be calculated as follows

1 pint is equals to 16 fluid ounce

2 pints= 2 × 16

= 32

The cost per fluid ounce is

= 3.52/32

= 0.11

Hence the unit rate of the cost of the juice per fluid ounce is $0.11

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