answer this whats 12*12

The percentage of students who got above 90 point is 80%

the decimal student got grade above the 90 points is 0.8

What is Decimal?

The accepted method for representing both integer and non-integer numbers is the decimal numeral system. It is the expansion of the Hindu-Arabic numeral system to non-integer values. Decimal notation is the name for the method of representing numbers in the decimal system.

Given,

Total no. of students = 30

No. of students who score above 90 points = 24

We have to find the percentage of the students who got above 90 points

So, to calculate,

                               24 / 30 x 100 = 80%

Now, we have to convert percent into decimal

so, we have,

                              80 / 100 = 0.8

Hence, 80% percent student got grade above 90 points

            And 0.8 of the student got grade above the 90 points

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Answer:

400 ft²

Step-by-step explanation:

The maximum area of a rectangle results from it being a square. The rectangle (or square) must have 4 equal sides in order to maximize area. But in this case, one side is a wall. That means that the remaining three sides will be = 60 / 3 = 20 feet long. You formed an square that is 20 ft x 20 ft = 400 ft²

Answer:

You should use the y2 - y1 /x2 - x1

To find the answer you should be able to plug in the x and the y in the equation with the coordinates that you have but I'm not sure if you don't have what you'll do

Answer:

(1/2) / 8 = 1/16

Step-by-step explanation:

Answer:

(1/2) ÷ 8 = 1/16

I had this question before, hope this helped!

Answer:

B

Step-by-step explanation:

-6x + 6 = 2x - 9

-6x + 15 = 2x

15 = 8x

x = 15/8

Answer:

Step-by-step explanation:

Answer:

d=12

Step-by-step explanation:

Answer:

s=x(20)

Step-by-step explanation:

s= solution

x= # of weeks

4x2=8

4x3=12

12+8=20

Answer:

First, you do 15+6 (because of the parentheses)

You get 21

then you have to do 1/3 times 21 and you get 7

Answer:

7

Step-by-step explanation:

Using BODMAS which stands for:

(Bracket, of, Division, Multiplication, Addition and Subtraction)

We first treat the bracket

  (15+6)=21

We then treat the division

(but it is already reduced to its lowest terms therefore no need, but if you like you can reduce it to a decimal though)

\(\frac{1}{3}\)

Then we move onto the multiplication which is the last part

\(\frac{1}{3}\) ×21= \(\frac{21}{3}\) =7

Answer:

x = 16

Step-by-step explanation:

Opposite sides are equal in a parallelogram

AD = BC

5x - 12 = 3x + 20

5x - 3x = 20 + 12

2x = 32

x = 32/2

x = 16

The truck driver would deliver 105 packages in a 7 hours day

An equation is an expression that shows how numbers and variables are related to each other using mathematical operators.

Let y represent the number of packages delivered by the truck driver in x hours. Using the point (1, 15) and (4, 60). Hence, the equation is:

y - 15 = [(60-15)/(4-1)](x - 1)

y = 15x

For a 7 hour day (x = 7):

y = 15(7) = 105

The driver would deliver 105 packages in 7 hours

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The difference in overall loss or gain between sell at the current day's high price or low price is found tp be the difference in overall gain as $280.10

The third option is correct.

High price value: 115 shares * $105.19 per share = $12,084.85

Low price value: 115 shares * $103.25 per share = $11,858.75

High price value: 30 shares * $145.18 per share = $4,355.40

Low price value: 30 shares * $143.28 per share = $4,298.40

The overall value at high price:

$12,084.85 + $4,355.40

= $16,440.25

The overall value at low price:

$11,858.75 + $4,298.40

= $16,157.15

In conclusion, the difference in overall gain or loss:

$16,440.25 - $16,157.15 = $280.10

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The price of each drink bought by Alena was :

Let's represent the price of a case of juice as j and the price of a case of soda as s. The equations are :

7j + 9s = 32

7j + 11s = 36

Multiply the first equation by 11 and the second equation by 9 to get rid of the s variable:

77j + 99s = 352

63j + 99s = 324

Then solving for j gives:

14j = 28

j = $ 2

s would then be :

7(2) + 9s = 32

9s = 18

s = 2

Therefore, a case of juice costs $2, and a case of soda also costs $2.

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Answer: appropriate is correct and fits the situation. A sweater-vest with reindeer on it is appropriate holiday apparel, even if it's totally embarrassing.

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

The hypotenuse of a 45-45-90 triangle is equal to the length of a leg times \(\sqrt{2}\)

So, in your problem,

\(x = 6\sqrt{2} (\sqrt{2}\)

  = 6(2) = 12

The length of the hypotenuse is x = 6√2.

Option B is the correct answer.

There are three commonly used trigonometric identities.

Sin x = Perpendicular / Hypotenuse

Cosec = Hypotenuse / Perpendicular

Cos x = Base / Hypotenuse

Sec x = Hypotenuse / Base

Tan x = Perpendicular / Base

Cot x = Base / Perpendicular

We have,

In a right triangle, the height is one leg of the triangle and the hypotenuse is the longest side.

We can use trigonometric ratios to find the length of the other leg.

Since the angle opposite the height is 45 degrees, and we know that the tangent of 45 degrees is 1, we can write:

tan(45°) = opposite/adjacent = 6√2/x

Multiplying both sides by x gives:

x tan(45°) = 6√2

Since tan(45°) = 1, we can simplify it to:

x = 6√2

Thus,

The length of the hypotenuse is x = 6√2.

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First step is null hypothesis and alternative test and next steps includes testing these hypothesis.

To conduct hypothesis testing on these data, we need to follow the following steps:

Step 1, State the null hypothesis and alternative hypothesis

Null Hypothesis (H0), There is no significant difference in life expectancy between people who eat fruits and vegetables and people who do not eat fruits and vegetables.

Alternative Hypothesis (Ha), People who eat fruits and vegetables have a higher life expectancy than people who do not eat fruits and vegetables.

Step 2, Decide the level of significance (alpha)

Let's assume the level of significance to be 0.05 (5%).

Step 3, Determine the test statistic and the critical value

We will use a two-sample t-test since we are comparing two independent samples. We can use Excel or any statistical software to calculate the test statistic and the critical value.

Using Excel, the test statistic (t) is -1.98, and the critical value (t_critical) is ±2.306.

Step 4, Determine the p-value

The p-value is the probability of obtaining a test statistic as extreme or more extreme than the observed one, assuming the null hypothesis is true.

Using Excel, the p-value is 0.077.

Step 5, Make a decision and interpret the results

Since the p-value (0.077) is greater than the level of significance (0.05), we fail to reject the null hypothesis. There is insufficient evidence to conclude that people who eat fruits and vegetables have a higher life expectancy than people who do not eat fruits and vegetables.

Therefore, we can conclude that there is no significant difference in life expectancy between people who eat fruits and vegetables and people who do not eat fruits and vegetables, based on the given data. However, we should keep in mind that this conclusion is based on a small sample size and may not be generalizable to the entire population.

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Answer:

144:9

16

16 ft high

Step-by-step explanation:

Easy...could also be written as 144/9 or 144 to 9

Divide

Same thing

Hope this helps. Have a nice day

\(f(x) = 2x is linear.f(x) = 4^x is exponential.\) This is where at each level, each branch extends into 4 branches.

In the first prompt, the number of boxes in each row is increasing by a constant amount, so the function is linear. In the second prompt, the number of branches is increasing by a factor of 4 with each level, so the function is exponential.

A linear function is defined as one where the output increases by a constant amount for each increase in the input. An exponential function is defined as one where the output increases by a constant factor for each increase in the input. The first prompt corresponds to a linear function, while the second prompt corresponds to an exponential function.

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The complete question is-

Is the function f(x) = 4^x, where x is the number of branches at level x in a tree diagram, linear or exponential? Explain your answer.

Answer:

2.5

Step-by-step explanation:

Given expression:

\(6 \times \left(\dfrac{2}{3} \div 2\right)+0.5\)

Following the order of operations (PEDMAS), carry out the calculation inside the parentheses first.

When dividing a fraction by a whole number, first covert the whole number into a fraction:

\(\implies 6 \times \left(\dfrac{2}{3} \div \dfrac{2}{1}\right)+0.5\)

When dividing fractions, flip the second fraction (swap the numerator and denominator), then multiply:

\(\implies 6 \times \left(\dfrac{2}{3} \times \dfrac{1}{2}\right)+0.5\)

\(\implies 6 \times \left(\dfrac{2 \times 1}{3\times2}\right)+0.5\)

\(\implies 6 \times \left(\dfrac{2}{6}\right)+0.5\)

\(\implies 6 \times \dfrac{2}{6}+0.5\)

Now carry out the multiplication:

\(\implies \dfrac{6 \times2}{6}+0.5\)

\(\implies \dfrac{\diagup\!\!\!\!6 \times2}{\diagup\!\!\!\!6}+0.5\)

\(\implies 2+0.5\)

Finally carry out the addition:

\(\implies 2.5\)

2.5

6*(2/3)/2 + 0.5

6*1/3 + 0.5

2 + 0.5

=2.5

Answer:

372

Step-by-step explanation:

We are given that the dimensions of the box are,

Length = 15 cm, Width = 20 cm and Height = 9 cm.

We know that the box represents a cuboid.

Since, surface area of a cuboid = L×W + 2×L×H + 2×W×H

Thus, the surface area of the box = 15×20 + 2×15×9 + 2×20×9

i.e. Surface area = 300 + 270 + 360

i.e. Surface area = 930.

Thus, the surface area of the box is 930 cm² i.e. 9300 mm².

Further, the sides of the tiles are 5 mm and the tile represents a square.

So, the surface area of the tile = 5 × 5 = 25 mm².

This gives us that,

Number of tiles required to cover the box =  = 372.

Hence, Dmitri requires 372 tiles to cover the box.

Solution

Let x be the number of pennies Ann's bank can hold

So, from the question we have that

The answer is 1000 pennies

Answer:

8

Step-by-step explanation:

As it's an isosceles right triangle, it's sides are equal, say x. x^2+x^2=(4*sqrt(2))^2. x=4, Area is (4*4)/2=8

\(\frac{24}{0.15}=\boxed{160}\)

The correct interpretation for the statement D'(8) = -0.5 is (c) At 8 a.m. the water level was 0.5 meters below sea level.

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

The function D gives the depth of the water, in meters, t hours after midnight on a certain day

This means that

D = depth in meters

t = time in hours

From the question, we have

Notation = D(n)

Also, from the question, we have

D'(8) = -0.5

This is the inverse of the function D(t)

So, the values of the parameters are

D(t) = -0.5

t = 8

This means that the number of hours is 8 and the depth is -0.5 meters

Hence, the interpretation of D'(8) = -0.5 is (c) At 8 a.m. the water level was 0.5 meters below sea level.

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Answer:

its 3 3/4 or in decimal form 3.75

Step-by-step explanation:

15 divided by 4 gives you that answer

Given:-

To find:-

Answer:-

In the given right angled triangle, we may use the trigonometric ratios. We can see that the measure of the longest side is 5 which is hypotenuse and the measure of perpendicular needs to be find out .

We may use the ratio of sine here as , we know that in any right angled triangle,

\(\implies\sin\theta =\dfrac{p}{h} \\\)

And here , p = 5 and h = x , so on substituting the respective values, we have;

\(\implies \sin\theta = \dfrac{x}{5} \\\)

Again here angle is 45° . So , we have;

\(\implies \sin45^o =\dfrac{x}{5} \\\)

The measure of sin45° is 1/√2 . so on substituting this we have;

\(\implies \dfrac{1}{\sqrt2}=\dfrac{x}{5} \\\)

\(\implies x =\dfrac{5}{\sqrt2}\\\)

Value of √2 is approximately 1.414 . So we have;

\(\implies x =\dfrac{5}{1.414} \\\)

\(\implies \underline{\underline{\red{\quad x = 3.53\quad }}}\\\)

Hence the value of x is 3.53 .

and we are done!

Answer:

The length of side x to the nearest tenth is 3.5.

Step-by-step explanation:

From inspection of the given right triangle, we can see that the interior angles are 45°, 45° and 90°. Therefore, this triangle is a 45-45-90 triangle.

A 45-45-90 triangle is a special right triangle where the measures of its sides are in the ratio  1 : 1 : √2.  Therefore, the formula for the ratio of the sides is b: b : b√2 where:

We have been given the hypotenuse, so:

\(\implies b\sqrt{2}=5\)

Solve for b:

\(\implies \dfrac{b\sqrt{2}}{\sqrt{2}}=\dfrac{5}{\sqrt{2}}\)

\(\implies b=\dfrac{5}{\sqrt{2}}\)

The side labelled "x" is one of the sides opposite the 45° angles, so:

\(\implies x=b\)

Substitute the found value of b into the equation for x:

\(\implies x=\dfrac{5}{\sqrt{2}}\)

\(\implies x=3.5355339...\)

\(\implies x=3.5\;\sf(nearest\;tenth)\)

Therefore, the length of side x to the nearest tenth is 3.5.

Answer:

3x + 4y = 0

Step-by-step explanation:

To find the equation of the line passing through the points (0,0) and P(8,-6), we need to determine the slope of the line and the y-intercept.

The slope of the line can be found using the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) = (0, 0) and (x2, y2) = (8, -6)

m = (-6 - 0) / (8 - 0) = -6/8 = -3/4

The y-intercept can be found by substituting the coordinates of P into the equation y = mx + b and solving for b:

-6 = (-3/4)(8) + b

b = -6 + 6 = 0

Therefore, the equation of the line passing through the points (0,0) and P(8,-6) is:

y = -3/4 x + 0

or

4y = -3x

or

3x + 4y = 0

So the answer is 3x + 4y = 0.

Hope this helps!

Answer:

Step-by-step explanation:

Range of the function is the set of y-values (output values) of the function on the graph.

Domain of the function is the set of x-values (input values) of the function.

Domain of the function : [-5, 4)

(including x = -5 and excluding x = 4)

Range : [-4, 2)

(Including y = -4 and excluding y = 2)

x - intercepts : x = -5, -2, 2

Average rate of change over the interval [0, 2]

= \(\frac{f(2)-f(0)}{2-0}\)

= \(\frac{0-(-4)}{2-0}\) [Since, f(2) = 0, f(0) = -4]

= 2

Right most interval where the graph is positive → [2, 4]

The key feature of a function include the intercepts and intervals of the function

(a) The range

The least y value on the graph is at y = -4, and the maximum is at y = 2, with an open circle.

So, the range is:

\(\mathbf{Range = [-4,2)}\)

(b) The domain

The least x value on the graph is at x = -5, and the maximum is at x = 4, with an open circle.

So, the domain is:

\(\mathbf{Domain = [-5,4)}\)

(c) The x-intercepts

This is the point where the graph crosses the x-axis.

So, we have:

\(\mathbf{x-intercept =-2 \ and\ 2}\)

(d) Average rate of change over [0,2]

From the graph, we have:

f(0) = -4

f(2) = 0

So, the average rate of change (m) is:

\(\mathbf{m = \frac{f(2) - f(0)}{2 - 0}}\)

\(\mathbf{m = \frac{0 - -4}{2 - 0}}\)

\(\mathbf{m = \frac{4}{2}}\)

\(\mathbf{m =2}\)

(d) The right-most interval where the graph is positive

The graph is positive from x = 2 to x = 4.

Hence, the right-most interval where the graph is positive is [2,4]

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Answer:

90 planes

Step-by-step explanation:

Take the total number of planes and multiply by the  percentage of planes that took off

120 * 75%

120 * .75

90