One quarter of a number x is 7. Write the equation may be used to find x.

Answer:

Step-by-step explanation:

\(a = b \times h \\ \\ a = 9 \: \: {yd}^{2} \\ b = 6 \: \: yd \\ \\ 9 = 6 \times h \\ h = \frac{9}{6} \\ h = 1.5 \: \: yd\)

I hope that is useful for you :)

Answer:

The answer is C.

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

1 = 10%

9 = 90%

Answer:

Step-by-step explanation:

ight so u have to find the circumfrance but first u have to get the fromla for circumfrance after u have that you have to get the formula for diamtre and add them up and u will have your answer

Answer:

d)the observations expressed in standard units

Step-by-step explanation:

The average will change and hence, consequently, so will the deviations from the average and also the standard deviation. so, the only option left is d)

Answer: |t - 15| ≤ 30 ; -30 ≤ t - 15 ≤ 30

Step-by-step explanation:

To set up the equation, we have to find the center, and the tolerance, so that we can use formula "|x - c| ≤ t"

First, we can find the tolerance by adding both number, then dividing by 2 --> -15 + 45 = 30 --> 30/2 = 15, so we now know that the center is 15

Next, we can find the tolerance by finding the distance between the center and one of the number --> 15 - (-15) = 30, so we now know that the tolerance is 30

Now we can set up our equation,

center (c) = 15

tolerance (t) = 30

|t - 15| ≤ 30

Now that we have our equation, we can set up the inequality

|x - c| ≤ t = -t ≤ x - c ≤ t

so,

-30 ≤ t - 15 ≤ 30

Hope this helps!

(sorry it was so long)

Rounding to three significant figures, the thickness of the foil is:

thickness = 1.54 x 10^-5 cm

To find the thickness of the foil, we can use the formula:

thickness = mass / (length x width x density)

where mass is the weight of the foil, length and width are the dimensions of the foil, and density is the density of aluminum.

The density of aluminum is approximately 2.70 g/cm³.

Substituting the given values, we get:

thickness = 4.08 g / (10.0 cm x 93.5 cm x 2.70 g/cm³)

thickness = 1.54 x 10^-5 cm

Rounding to three significant figures, the thickness of the foil is:

thickness = 1.54 x 10^-5 cm

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20 = 2d -4

24 =. 2d

d = 12

a dice is thrown once, what ia the probality of getting an odd number

\(\measuredangle A\cong \measuredangle E\implies 112=16x\implies \cfrac{112}{16}=x\implies \boxed{7=x} \\\\[-0.35em] ~\dotfill\\\\ \overline{MS}\cong \overline{NR}\implies 41=3x+5y\implies 41=3(7)+5y\implies 41=21+5y \\\\\\ 20=5y\implies \cfrac{20}{5}=y\implies \boxed{4=y}\)

Answer:

The answer is c=8

3/6=4c

3(c)=4(6)

3c=24

To find the c divide 3 both side

3c÷3=24÷3

c=8

hope that helps you

y = -1/3x + 1

y = -2x - 3

We can compare the equations to the graphs and see which graph represents the intersection point of the two equations.

The first equation, y = -1/3x + 1, has a negative slope (-1/3) and a y-intercept of 1.

The second equation, y = -2x - 3, also has a negative slope (-2) and a y-intercept of -3.

Based on the slopes and y-intercepts, we can identify the correct graph by finding the point where the two lines intersect.

Unfortunately, since the graphs are not provided, I am unable to determine which specific graph shows the solution to the system of linear equations. I recommend referring to the graph representation of the equations and identifying the intersection point to determine the correct graph.

Answer:

$54.50

Step-by-step explanation:

3 pizzas + 2 breadsticks = $29.50

2 pizzas + 3 breadsticks = $23  

5 pizzas + 6 breadsticks = $x

multipy first equation by 3 and second by -2

9 pizzas + 6 breadsticks = $88.50

-4 pizzas -6 breadsticks = $-46

add the equations up,  9-4 pizzas + 6-6 breadsticks = $88.50-46

5 pizzas = $42.50 , divide by 5 both sides

1 pizza = $8.50

Substitute the price of a pizza, 2 pizzas + 3 breadsticks = $23  

2*8.50 + 3breadstiks = $23

17 + 3 breadsticks = $23  subtract 17 from both sides so

3 breadsticks = $23 -$17 divide by 3

1 breadstick = 6/3= $2

$5*8.50 for pizzas + $6*2 for breadsticks = $54.50

Answer:

-2

Step-by-step explanation:

If we replace all the spots where x is with -3, we get this: (-3)^2 + 5(-3) + 4. Then we get... 9 + -15 + 4 which equals -2

Answer:

Step-by-step explanation:

Use the slope formula to find the slope  m.

m  =  1 /2

m = rise/run = y_2 - y_1 / x_2 - x_1

m = slope

(x_1, y_1) = coordinates of first point in the line

(x_2, y_2) = coordinates of second point in the line

Answer:

Step-by-step explanation:

12

Riya earns $45 in commission for selling 15 newspaper ads at $50 each.

A commission is a charge or payment given to a person or group in exchange for a good or service. When selling goods or services on behalf of a corporation, sales representatives or agents are frequently compensated with commissions in the business world. For instance, a stockbroker may receive a fee for carrying out a trade on behalf of a customer, while a real estate agent may receive a commission depending on the sale price of a property they assist in selling.

Riya receives a 6% commission for selling newspaper ads, and if she sells 15 ads for $50 each, her total earnings can be calculated as follows:

Total earnings = Total sales x Commission rate

The total sales from selling 15 ads at $50 each are:

Total sales = 15 x $50 = $750

The commission rate is 6%, which can be written as 0.06 as a decimal.

Plugging these values into the formula, we get:

Total earnings = $750 x 0.06 = $45

Therefore, Riya earns $45 in commission for selling 15 newspaper ads at $50 each.

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Answer:

y = 6

Step-by-step explanation:

5y + 1 = 31

Subtract 1 from each side

5y + 1-1 = 31-1

5y = 30

Divide by 5

5y/5 = 30/5

y = 6

Answer:

y = 6

Step-by-step explanation:

5y means 5 multiplied by something. 5y + 1 equals 31. So 5 multiplied by 6 equals 30 + 1 = 31, which is the given answer.

Answer: Its c

Step-by-step explanation: -2 - 6 is -8

a) The value of z corresponding to an area of 0.1210 can be found using statistical tables or a statistical calculator.

b) Similarly, the value of z corresponding to an area of 0.9898 can be obtained using statistical tables or a statistical calculator.

c) To find the value of z at the 45th percentile, we can use the standard normal distribution table or a statistical calculator.

a) To find the value of z corresponding to an area of 0.1210, you can use a standard normal distribution table or a statistical calculator. By looking up the area of 0.1210 in the table, you can determine the corresponding z-value. For example, if you find that the z-value for an area of 0.1210 is -1.15, then -1.15 is the value of z corresponding to the given area.

b) Similarly, to find the value of z corresponding to an area of 0.9898, you can refer to a standard normal distribution table or use a statistical calculator. Find the z-value that corresponds to the area of 0.9898. For instance, if the z-value for an area of 0.9898 is 2.32, then 2.32 is the value of z corresponding to the given area.

c) To find the value of z at the 45th percentile, you can use a standard normal distribution table or a statistical calculator. The 45th percentile corresponds to an area of 0.4500. By finding the z-value for an area of 0.4500, you can determine the value of z at the 45th percentile. For example, if the z-value for an area of 0.4500 is 0.125, then 0.125 is the value of z at the 45th percentile.

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Answer:

20

Step-by-step explanation:

Answer:

K=5

Step-by-step explanation:

Answer:  B    P= \(\frac{33}{2}\) + \(\frac{11}{2}\sqrt{3}\)

Step-by-step explanation:

Given:

h=11

30-60-90 triangle

Find:

Perimeter - all the sides added up

Rules:

In a 30-60-90 triangle, the ratio for a the sides are as follows:

Short leg, across from 30 = x

long leg across from 60 = x√3

hypotenuse, acrosss from 90 = 2x

If h=11, from the rules above

h=2x                  >substitute h=11

11 = 2x               >divide both sides by 2

x =  11/2

short leg = x           >from rules

short leg = x/2

long leg = x√3          >from rules

long leg =  \(\frac{11}{2}\sqrt{3}\)

Perimeter = h  +short leg +  long leg

Perimeter = 11 + \(\frac{11}{2}\) + \(\frac{11}{2}\sqrt{3}\)

Perimeter = \(\frac{33}{2}\) + \(\frac{11}{2}\sqrt{3}\)

B

Answer:

\(\textsf{B.} \quad \dfrac{33}{2}+\dfrac{11}{2}\sqrt{3}\)

Step-by-step explanation:

A 30-60-90 triangle is a special right triangle where the measures of its angles are 30°, 60°, and 90°.

In a 30-60-90 triangle, the lengths of its sides are in the ratio 1 : √3 : 2.

Therefore, the formula for the ratio of the sides is x : x√3 : 2x where:

If the hypotenuse of the triangle is 11 units, then 2x = 11.

Solving for x:

\(\implies \dfrac{2x}{2} = \dfrac{11}{2}\)

\(\implies x=\dfrac{11}{2}\)

As the side opposite the 30° angle is equal to x, then the length of this side is 11/2 units.

This means that the side opposite the 60° angle is:

\(\implies x\sqrt{3}=\dfrac{11}{2}\sqrt{3}\)

The perimeter of a two-dimensional shape is the sum of the lengths of all the sides of the shape. Therefore, the perimeter of the 30-60-90 triangle is:

\(\begin{aligned}\textsf{Perimeter}&=11+\dfrac{11}{2}+\dfrac{11}{2}\sqrt{3}\\\\&=\dfrac{22}{2}+\dfrac{11}{2}+\dfrac{11}{2}\sqrt{3}\\\\&=\dfrac{22+11}{2}+\dfrac{11}{2}\sqrt{3}\\\\&=\dfrac{33}{2}+\dfrac{11}{2}\sqrt{3}\end{aligned}\)

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The sequence of natural numbers that leaves a remainder of 3 when divided by 10 is:

3, 13, 23, 33, 43, 53, 63, 73, 83, 93, 103, 113, ...

\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)

♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

The vendor sold 172 sodas and 58 hotdogs at the hockey game.

An equation of degree one is known as a linear equation.

A linear equation of two variables can be represented by ax + by = c.

let, the number of soda cans be 'x' and the number of hot dogs be 'y'.

So, From the given information x = 3y and the vendor sold a total of 232.

Therefore, x + y = 232.

3y + y = 232.

4y = 232.

y = 232/4.

y = 58.

So, He sold 58 hot dogs and 3×58 = 172 soda cans.

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The solution to the system of linear equations is x = 1, y = -3, and z = 8, which is option B: X=-1, y=-3, z=2.

To solve this system of linear equations, we can use Gaussian elimination, which involves adding and subtracting equations to eliminate variables. Here are the steps:

x - 3y - 2z = 6

2x - 4y - 3z = 8

-3x + 6y + 8z = -5

Step 1: Add twice the first equation to the second equation to eliminate x:

x - 3y - 2z = 6

4y + z = 20

-3x + 6y + 8z = -5

Step 2: Add three times the first equation to the third equation to eliminate x:

x - 3y - 2z = 6

4y + z = 20

9y + 2z = 13

Step 3: Solve for z in the second equation:

4y + z = 20

z = 20 - 4y

Step 4: Substitute z into the third equation and solve for y:

9y + 2z = 13

9y + 2(20 - 4y) = 13

y = -3

Step 5: Substitute y into the second equation and solve for z:

4y + z = 20

4(-3) + z = 20

z = 8

Step 6: Substitute y and z into the first equation and solve for x:

x - 3y - 2z = 6

x - 3(-3) - 2(8) = 6

x = 1

Therefore, the solution to the system of linear equations is x = 1, y = -3, and z = 8, which is option B: X=-1, y=-3, z=2.

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The text format of the question in the picture:

15. The solution the system of linear equation of

x-3y-2z = 6

2x-4y-3z = 8

(-3x+6y+8z = -5 is

A) X=-1,y=-3, z=-2 B) X=-1,y=-3, z=2 C) X=1,y=-3, z=2 D) X = 1, y = 3, z=-2

An augmented matrix is a matrix that neatly summarizes a set of linear equations. It creates a single matrix out of the variable and constant coefficients on the right side of the equations.

The given augmented matrix is in row echelon form and represents a linear system. Use back-substitution to solve the system if possible.

The augmented matrix is as follows:

1 1 -16 | 0

1 12 0 | 11

We can use back-substitution to solve the system because the matrix is already in row echelon form.

The second equation gives us:

1x2 + 12x3 = 11

When we solve for x2, we get:

x2 = 11 - 12x3

When the value of x2 is substituted into the first equation, we get:

1x1 + 1(11 - 12x3) - 16x3 = 0

If we simplify, we get:

x1 + 11 - 12x3 - 16x3 = 0

x1 - 28x3 = -11

X1 and X3 are two variables that are related to one another. As a result, we can use a parameter to express the solution set. Allowing x3 to be the parameter

x2 = 11 - 12x3 x3 = x3 (parameter) x1 = -11 + 28x3

Therefore, the parameterized form provides the solution set:

x1 = -11 plus 28x3 

x2 = 11- 12x3 

x3 = x3

The appropriate option is thus:

OA. (-11 + 28x3, 11 - 12x3, x3), where x3 is a parameter, is the solution set.

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