mrs. smith told her students that anyone who scores over 90% on the test will get an extra 30 minutes of recess. which group contingency is this?

Answer:

y = 2x + 2

Step-by-step explanation:

The slope of the line is 2 because you go up 2 and to the right 1. The y-intercept is 2, which where the line intersects through the y-axis.

Slope-intercept form:

y = mx + b

m is the slope of the line and b is the y-intercept

Answer:

1:25 or 1/25

Step-by-step explanation:

Rate=16/400

1/25 or 1:25

Answer: 16 to 400. This will be the answer I believe.

Answer:

3,2,4

The fastest restaurant for service is the second choice.                                                   It takes 2 minutes to service each customer.

Step-by-step explanation:

27/9 = 3 minutes per customer

8/4 = 2 minutes per customer

32/8 = 4 minutes per customer

Answer: To determine which expression is equivalent to the one Shea wrote, we can first evaluate the expression 5(y + 2) + 4. The parentheses indicate that we should first perform the operation inside the parentheses, which is to add 2 to y. This results in 5(y + 2) = 5y + 10.

We can then add 4 to both sides of the equation to get 5y + 10 + 4 = 5y + 14. This expression is equivalent to the one Shea wrote, 5(y + 2) + 4.

Therefore, the expression that is equivalent to the one Shea wrote is 5y + 14.

The 90% C.I. is more precise in estimating a mean than the 95% C.I.

What does confidence interval mean?

Your estimate's mean plus and minus the range of that estimate's fluctuation is called a confidence interval.

                        If you repeat your test, you can expect your estimate to fall between these numbers with a reasonable degree of certainty. In statistics, confidence is another word for probability.

What does the term "confidence interval" mean?

A claim of 95% confidence in statistics essentially means that the researcher has observed one conceivable interval out of many possible ones, and that 19 out of 20 of those intervals contain the correct value of the parameter.

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Answer:47/50

Step-by-step explanation:

47+3=50

47 adult tickets sold

47/50

The students that prefer science than Maths are 27

From the question, we have the following parameters that can be used in our computation:

Math = 24

Science = 33

Total proportion = 100

The additional number of students that prefer science than Maths is calculated as

Additional = (Science - Maths)/Total proportion * Number of students

So, we have

Additional = (33 - 24)/100 * 300

Evaluate

Additional = 27

Hence, the number of students is 27

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Using division we know that (D) 2700÷9=300 is the basic fact using which John will get t know how many seeds will be planted in a row.

One of the four fundamental arithmetic operations, or how numbers are combined to create new numbers, is division.

The other operations are multiplication, addition, and subtraction.

In mathematics, the division is the process of dividing a number into equal parts and calculating the maximum number of equal parts that may be formed.

For instance, dividing 15 by 3 results in the division of 15 into 3 groups of 5 each.

The division sign, "," or occasionally "/," is used in computer code.

So, we know that: Total seeds are 2700 and the total rows are 9

If there are the same amount of seeds in each row.

Following that, the number of seeds will be put in each row.

= (Total seeds) ÷ (Total rows)

= 2700÷9

= 300

Therefore, using division we know that (D) 2700÷9=300 is the basic fact using which John will get t know how many seeds will be planted in a row.

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Correct question:

John has 2,700 seeds of corn to plant in 9 rows on his farm. Each row will have the same number of seeds. Part A

Which basic fact can John use to find out how many seeds will be planted in each row?

A. 9÷3=3

B. 27÷9=4

C. 27÷9=3

D. 2700÷9=300

Answer: [tex][-3,-1) \cup (-1, 6)[/tex]

Step-by-step explanation:

The domain of a function is the set of [tex]x[/tex]-values.

A hole means that the value is not included in the domain, whereas a filled circle means the value is included in the domain.

Thus, the domain is [tex][-3,-1) \cup (-1, 6)[/tex].

Both have a domain of [tex][0, \infty)[/tex] which in other words, is the set of nonnegative real numbers. I recommend using a graphing calculator to verify both of these functions have the same domain.

The reason for this is because we need to avoid negative numbers under the square root. So it leads us to [tex]\text{x} \ge 0[/tex]

Answer:

12.1 cm (nearest tenth)

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{7.6 cm}\underline{Sine Rule} \\\\\\$\dfrac{\sin A}{a}=\dfrac{\sin B}{b}=\dfrac{\sin C}{c} $\\\\\\where:\\ \phantom{ww}$\bullet$ $A, B$ and $C$ are the angles. \\ \phantom{ww}$\bullet$ $a, b$ and $c$ are the sides opposite the angles.\\\end{minipage}}[/tex]

From inspection of the given triangle:

Substitute the values into the sine rule to find the measure of angle C:

[tex]\implies \dfrac{\sin A}{a}=\dfrac{\sin C}{c}[/tex]

[tex]\implies \dfrac{\sin 81^{\circ}}{13.5}=\dfrac{\sin C}{8.2}[/tex]

[tex]\implies \sin C=\dfrac{8.2\sin 81^{\circ}}{13.5}[/tex]

[tex]\implies C=\sin ^{-1} \left(\dfrac{8.2\sin 81^{\circ}}{13.5}\right)[/tex]

[tex]\implies C=36.86482816..^{\circ}[/tex]

Interior angles of a triangle sum to 180°.

[tex]\implies A+B+C=180^{\circ}[/tex]

[tex]\implies 81^{\circ}+B+36.86482816...^{\circ}=180^{\circ}[/tex]

[tex]\implies B=62.13517184...^{\circ}[/tex]

Substitute the found value of angle B into the sine rule and solve for b:

[tex]\implies \dfrac{\sin A}{a}=\dfrac{\sin B}{b}[/tex]

[tex]\implies \dfrac{\sin 81^{\circ}}{13.5}=\dfrac{\sin 62.13517184...^{\circ}}{b}[/tex]

[tex]\implies b=\dfrac{13.5\sin 62.13517184...^{\circ}}{\sin 81^{\circ}}[/tex]

[tex]\implies b=12.08347925...[/tex]

Therefore, the measure of b is 12.1 cm (nearest tenth).

The two solutions for the system of equations:

y = x^2+ 5x - 3

y - x = 2

Are:

(-5, -7) and (1, -1)

Here we have the following system of equations:

y = x^2+ 5x - 3

y - x = 2

We can replace the first equation into the second one to get:

(x^2+ 5x - 3) - x = 2

x^2 + 4x - 3 = 2

x^2 + 4x - 3 - 2 = 0

x^2 + 4x - 5  = 0

Using the quadratic formula, we will get the solutions:

[tex]x = \frac{-4 \pm \sqrt{4^2 - 4*1*-5} }{2} \\\\x = \frac{-4 \pm 6}{2}[/tex]

The two solutions are:

x = (-4 - 6)/2 = -5

x = (-4 + 6)/2 = 1

To find the values of y, we can evaluate the linear equation:

when x = -5

y - (-5) = -2

y + 5 = -2

y = -2 - 5 = -7

So one solution is (-5, -7)

when x = 1

y - 1 = -2

y = -2 + 1 = -1

The other solution is (1, -1)

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ANSWER: the people residing locally that are attending collage is

70% and on the bottom it is 40% and the people entering the work force it is 30%

Step-by-step explanation:

GIVE BRAINLIEST

The percentage of all graduates who plan to enter the workforce and reside locally is 15%.

According to the tree diagram, we need to calculate the percentage of high school graduates who plan to enter the workforce and reside locally. To calculate this, we need to follow the branches in the tree diagram. Let's start from the top:

1. The first branch shows that 30% of high school graduates plan to enter the workforce.

2. From those 30%, 50% plan to reside locally.

3. To calculate the percentage of all graduates who plan to enter the workforce and reside locally, we need to multiply the percentages from steps 1 and 2 together: 30% * 50% = 0.30 * 0.50 = 0.15 or 15%.

Therefore, the percentage of all graduates who plan to enter the workforce and reside locally is 15%.

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Answer:

D) = (x - 6 )(x - 6)

Step-by-step explanation:

x^2 - 12x + 36

= x^2 -6x -6x + 36

= x(x - 6) -6(x - 6)

= (x - 6 )(x - 6)

Answer:

[tex]\boxed{\tt (x-6)(x-6)}[/tex]

Step-by-step explanation:

To factor x²−12x+36 we need to find two numbers that add together to get -12 and multiply together to get 36:-

Let's try -6 and -6:-

[tex]\tt -6+-6 = -12[/tex]

[tex]\tt -6\times -6 = 36[/tex]

[tex]\tt (x-6)(x-6)[/tex]

_________________

Hope this helps!

Have a nice day!

Nina charges $9.96 more for shipping 20 paintings than for shipping 16 paintings.

What is selling cost?

The overall expense expended by a monopolistically competitive corporation to set its product apart from those of its rivals is referred to as the selling cost. For instance, a company's advertising costs are included in the cost of selling the product.

Given that,

She sells 4 paintings she apply a charge $ 9.96. .....(i)

Again she sells 8 paintings she apply a charge $19.92. ....(ii)

Multiplying statement (i) by 5

She sells 20 paintings she apply a charge $49.8....(iii)

Multiplying statement (ii) by 2

She sells 16 paintings she apply a charge $39.84....(iv)

Subtract (iv) by (iii)

The difference between shipping 20 paintings to shipping 16 paintings is $(49.8 - 39.84) = $ 9.96

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Answer:

1.2 minutes

Step-by-step explanation:

Kelsey moves 1/3 length per minute. The sidewalk moves 1/2 length per minute. Walking on the sidewalk, Kelsey moves (1/3+1/2) = 5/6 lengths per minute, or 6/5 minutes per length.

So  it takes Kelsey 1 1/5 minutes to walk the length on the moving sidewalk.

The hypothesis is A prism base that are regular polygons

Conclusion: It is a regular prism

If-then form: If a prism has bases that are regular polygons, then it is a regular prism

An if-then statement, also known as a conditional statement, is a set of hypotheses followed by a conclusion.

As indicated, this is p → q. Read this: if p, then q. If the hypothesis is correct but the conclusion is untrue, a conditional statement is false.

The conditional statement is of two parts the hypothesis which is p and the conclusion which is q

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Answer:

0=−2

Step-by-step explanation:

Answer:

It would be the first and the third one.

Step-by-step explanation:

Answer:

√2-√3

Step-by-step explanation:

√3 (√2 -1 ) + √2 (1-√3)

= √3 x √2 - √3 + √2 - √2 x √3

= √6 - √3 + √2 - √6

= √2 - √3

Answer:

5/ Slope is 0

6/ Slope is 4/1

7/ Slope is -4/2 = -2

8/ Slope is undefined

Step-by-step explanation:

5/ Slope is 0 when it goes straight to the right

6/ We see that the y goes up 4, x over 1, so the slope is 4/1

7/ We see that the y goes down by 4, and x over by 2, so the slope is -2

8/ Slope is undefined when it goes straight up!

If you can please give me a Brainliest, thank you!

1: 17/4 or 4.25

2: 375/35 or 10.63          

3: 146/15 or 9.73        

4: 22/3 or 7.3

5: 265/24 or 11.04

Answer: [tex]g(x)=(x+3)^2[/tex]

Step-by-step explanation:

When shifting a function left [tex]3[/tex] units, [tex]f(x) \to f(x+3)[/tex].

Therefore, [tex]g(x)=(x+3)^2[/tex].

When t=2+√110/4, the ball will be 50 feet  height above the ocean.

Height is the measurement of someone or something from the top to toe or the base to head.height always refers to something is mesured either its high or low.

As per the given question

Because h=-16t^2+64t+96

So when h = 50

It means -16t^2+64t+96 =50

-16t^2+64+46=0

8t^2-32t-23=0

{∆=b^2-4ac,x= -b+√∆/2a}

So, ∆=(-32)^-4×8×(-23)=1760>0

So t =2- √110/4 <0

Thus tha answer is t = 2+√110/4

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The equation of the red graph is x² + 2

There are many different ways to define an equation. The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.

For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. Mathematical algebraic equations typically have one or more variables.

Since the function in the graph is headed upward , we know the portion of  x²  is positive . And since the highest point of the red line on the y-axis is 2, we can conclude the function represented by the red line is

x² + 2

Therefore the equation of red graph is  x² + 2

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Answer: 200384X 403 or 496 X 404

Step-by-step explanation: hope this helped

Answer:

1968

Step-by-step explanation:

By finding the volume of the 'missing piecce' and subtracting that from the volume of the figure if it was a prism we find that the answer is 1968

(14 x 16 x 12) - (10 x 6 x 12) = 1968

          v                   v

2688           --        720       = 1968

Hope this helps!!

The line parallel to the given line 2x+2y=-12 is also -1.

Define slope.

Slope of a line refers to the measure of the steepness and the direction of a line.

Illustrate y= m x+ c.

y = mx + c refers to an equation of a line having a gradient of m and a y-intercept of c. This equation is often referred to as the slope-intercept form of the equation of a line.

We know that,

The general equation of a line is y=m x+ c,

where m = slope and b = y-intercept, c is a constant

Now, the equation of the given line is,

2x+2y=-12

⇒x + y=-6

Now expressing the equation in the form of y=m x+ c

So, y=-6-x

Further, on rearranging we get y= (-1) x-6

                                                   y = mx + c

So, according to the equation,on comparing we get

m=-1 and c=-6

On comparing, the slope of the given line is -1.

Since, 'The slopes of two parallel line is always equal'.

Thus, the line parallel to the given line is also -1.

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Answer: 2x + 2y = -1

Step-by-step explanation:

54899.91 is the salary level that divides the teachers into one group that gets a raise and one that doesn't. Using the concept of probability -

Probability is a mathematical discipline that concerns with numerical figures of how probable an occurrence is to occur or how probably a statement is to be true. A number between 0 and 1 is the probability of an occurrence, where, broadly speaking, 0 denotes the event's impossibility and 1 denotes its certainty.

Given that,

the salary of teachers in a particular school district is normally distributed with a mean of 50000.

standard deviation of 2500

2.5% of the salaries would not get a raise

P (X > x) = 0.025

or, P {( X - 50000)/2500} ≤ {x - 50000/2500} = 0.975

or, P (Z ≤ ( x - 50000)/2500) = 0.975

or, Φ ((x - 50000)/2500) = 0.975

or, (x - 50000)/2500 = Φ⁻¹ (0.975)

or, (x - 50000)/2500) = 1.959964

or, x = 50000 + (1.959964 × 2500)

or, x = 54899.909961

or, x = 54899.91

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