Sarah's restaurant bill came to us18.80 she usually leaves a 15%tip.how much tip did she leave​

Answer:

x = 107 degrees

Step-by-step explanation:

A line is 180 degrees so first, find the other angle by doing 180 - 160 which gives you 20 degrees.

The angles of a triangle add up to 180 degrees, so do 180-53-20, which gives you 107 degrees as the value of x.

Answer:

Step-by-step explanation:

I took the quiz.

But really, the Earth is not that old. just a couple thousand years old.

There is no such thing as 2.3 million billion years ago. There is someone with a greater power above who created everything.

Hope this helps and have a great day!

:)

Answer:

A. Quaternary

Step-by-step explanation:

Answer:

1,9,972

2,6,288

3,12,2304

Step-by-step explanation:

Answer:

a.) Average life of a refrigerator

b.) 0.1151

c.) 0.0548

d.) 0.6472225

Step-by-step explanation:

Given that :

Average life before replacement, mean, m = 14 years

Standard deviation, σ = 2 years

A.)

The random variable is the variable which is being measured.

B.) What is the probability that someone will keep a refrigerator fewer than 11 years before replacement?

Fewer than 11 years, P(x < 11)

We need to obtain the Z probability, at P(Z < 11)

The Zscore = (x - mean) / standard deviation

Zscore = (11 - 14) / 2.5 = - 1.2

P(Z < - 1.2) = 0.1151

C.) What is the probability that someone will keep a refrigerator more than 18 years before replacement?

More than 18 years, P(x > 18)

We need to obtain the Z probability, at P(Z > 18)

The Zscore = (x - mean) / standard deviation

Zscore = (18 - 14) / 2.5 = 1.6

P(Z > 1.6) = 0.0548

D.) What is the probability that someone will replace a refrigerator between 8 and 15 years?

P(x < 8)

The Zscore = (x - mean) / standard deviation

Zscore = (8 - 14) / 2.5 = - 2.4

P(Z < - 2.4) = 0.0081975

P(x < 15)

The Zscore = (x - mean) / standard deviation

Zscore = (15 - 14) / 2.5 = 0.4

P(Z < 0.4) = 0.65542

P(Z < 0.4) - P(Z < - 2.4)

0.65542 - 0.0081975 = 0.6472225

Answer:

r =3.4 mm

Step-by-step explanation:

circumference of a circle = 2πr

21.3 = 2*3.14*r

21.3 = 6.28*r

21.3 / 6.28 = r

3.39 = r

3.4 = r

Answer:

1- El Cerrito el 75% de la población habla una lengua distinta al español, mientras que en El Paseo dicho porcentaje es del 71.42%, con lo cual la diferencia de ambos es de 3.58%.

2- El 60% de los alumnos de 6ºA y el 80% de los alumnos de 6ºB aprobaron matemáticas, con lo cual la diferencia entre ambos grupos fue de 20% en favor del grupo 6ºB.

Step-by-step explanation:

1- Dado que en dos localidades hay habitantes que hablan una lengua distinta al español, de las cuales en El Cerrito son 3 de cada 4 mientras que en El Paseo son 5 de cada 7, para determinar en cuál de las dos localidades hay un número mayor de hablantes de una lengua distinta al español, y determinar la diferencia entre ambas localidades, se deben realizar los siguientes cálculos:

4 = 100

3 = X

3 x 100 / 4 = 75

7 = 100

5 = X

5 x 100 / 7 = 71.42

Por lo tanto, en El Cerrito el 75% de la población habla una lengua distinta al español, mientras que en El Paseo dicho porcentaje es del 71.42%, con lo cual la diferencia de ambos es de 3.58%.

2- Dado que en una escuela del poblado El Cerrito, 18 de los 30 alumnos del grupo 6ºA aprobaron el examen de matemáticas, mientras que en el grupo 6ºB lo hicieron 32 de los 40 alumnos, para determinar qué grupo obtuvo mejores resultados y cuál es la diferencia entre ambos grupos se deben realizar los siguientes cálculos:

30 = 100

18 = X

18 x 100 / 30 = 60

40 = 100

32 = X

32 x 100 / 40 = 80

Por lo tanto, el 60% de los alumnos de 6ºA y el 80% de los alumnos de 6ºB aprobaron matemáticas, con lo cual la diferencia entre ambos grupos fue de 20% en favor del grupo 6ºB.

Given:

Danny's gross earnings for the week = $1655.25.

His deductions comprise 25% of his total compensation.

To find:

His net pay.

Solution:

We need to find the Danny's net pay, so we have to subtract the deductions from his gross earnings.

So, the net pay is:

[tex]\text{Net pay}=\text{Gross earnings}-25\%\ of\ \text{Gross earnings}[/tex]

[tex]\text{Net pay}=1655.25-\dfrac{25}{100}\times 1655.25[/tex]

[tex]\text{Net pay}=1655.25-413.8125[/tex]

[tex]\text{Net pay}=1241.4375[/tex]

Round the value to the nearest cent (two decimal places).

[tex]\text{Net pay}\approx 1241.44[/tex]

Therefore, the the net pay is $1241.44.

Note: All options are incorrect.

Based on the information given, the net pay will be $1241.44.

From the information given, Danny's gross earnings for the week are $1655.25 and his deductions comprise 25% of his total compensation.

Therefore, his net pay will be:

= $1655.25 - (25% × $1655.25)

= $1241.44

In conclusion, the correct option is $1241.44.

Learn more about division on:

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9514 1404 393

Answer:

  125

Step-by-step explanation:

The sum of exterior angles of a convex polygon is 360°. So, y is ...

  y° = 360° -40° -65° -60° -70° = 125°

  y = 125

Answer:

b. (1, 13).

Step-by-step explanation:

Here's a pic of my work. You can put either equation on the other side of the equal sign, because they both equal Y. therefore, they equal each other.

Answer:

equilateral triangle

Step-by-step explanation:

coz in pic all side are equal.

hope it helps

Answer:

C. Equilateral

Step-by-step explanation:

This is because the sides are equal. therefore its, C

....in case if you didn't know:

---------------------------------------------------

classification based on the sides only:

Scalene is a type of triangle which has all three sides of different lengths.

Isosceles: only two of the sides are the same.

Equilateral: this when all of the sides are the same lengths.

---------------------------------------------------

classification based on the angles:

right: contains one 90-degree angle

acute: each angle is less than 90 degrees.

obtuse: one angle is larger than 90 degrees.

Answer:

[tex]\frac{1}{6\\}[/tex]

Explanation:

Probability = [tex]\frac{Number of outcomes}{Total possible outcomes}[/tex]

In this case Number of outcomes is 1, that is 6

And total number of outcomes = 6 (Because there are six sides of a dice)

So the probability = [tex]\frac{1}{6\\}[/tex]

Hope it helps :)

Answer:

i think the answer will be 2

Answer:

D) 215°

Step-by-step explanation: First, straight line angle measures 180°

Plus the angle formed by the perpendicular, 90°

then subtract 55° to obtain your final answer.

hope this is helpful

Answer:

150 cause subtract 150 from 270 you get 150

Answer:

the answer is B

Step-by-step explanation:

i guessed and got it right

Answer: D. It lies in Quadrant II or III

Step-by-step explanation: It asks for any point on a coordinate plane with a NEGATIVE X COORDINATE.

With this we can use this image (Shown below) to help us find out the answer... Quadrants II and III both have a negative X-coordinate

Answer:

Step-by-step explanation:

Finding the vertex or the end of the shape.

Find the y -intercept, (0,f(0)) ( 0 , f ( 0 ) ) .

Solve f(x)=0 f ( x ) = 0 to find the x coordinates of the x -intercepts if they exist.

Make sure that you've got at least one point to either side of the vertex. ...

Sketch the graph.

Answer:

huuujjjjjjjjjjjjjiiikkkk

Answer:

2x - 1 = y

2x - 1 = 2.5

Use inverse operations

2.5 + 1 = 3.5

3.5 / 2 = 1.75

2 x 1.75 - 1 = 2.5

x = 1.75

Answer:

Hope this helps

Answer:

there u go hope it helps yea

Given:

M is the midpoint of AB.

M(2,0) and A(-3, 3).

To find:

The coordinates of point B.

Solution:

Midpoint formula:

[tex]Midpoint=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)[/tex]

Let the coordinates of point B are (a,b). Then, using the midpoint formula, we get

[tex](2,0)=\left(\dfrac{-3+a}{2},\dfrac{3+b}{2}\right)[/tex]

On comparing both sides, we get

[tex]\dfrac{-3+a}{2}=2[/tex]

[tex]-3+a=2\times 2[/tex]

[tex]a=4+3[/tex]

[tex]a=7[/tex]

And,

[tex]\dfrac{3+b}{2}=0[/tex]

[tex]3+b=0[/tex]

[tex]3+b-3=0-3[/tex]

[tex]b=-3[/tex]

Therefore, the coordinates of point B are (7,-3).

Answer:

Slope = -1

Step-by-step explanation:

Slope (m) = [tex]\frac{Y_{2}-Y_{1} }{X_{2}-X{1}}[/tex]

m = [tex]\frac{-3-5 }{6-(-2)}[/tex]

m=[tex]\frac{-8}{8}[/tex]

m = -1

Answer:

3

Step-by-step explanation:

3 + 11 ⋅ ( 8 − 4 ) ÷ ( 5 + 6 ) − 4

 Subtract  4  from  8 .

3 + 11 ⋅ 4 ÷ ( 5 + 6 ) − 4

Multiply  11  by  4 .

3 + 44 ÷ ( 5 + 6 ) − 4

Find the common denominator.  

Add  5  and  6 .

3 + 44 ÷ 11 − 4

Write  3  as a fraction with denominator  1 .

3/ 1 + 44 ÷ 11 − 4

Multiply  3/ 1  by  11/ 11 .

3/ 1 ⋅ 11 /11 + 44 ÷ 11 − 4

Multiply  3/ 1  and  11 /11 .

3 ⋅ 11 /11 + 44 ÷ 11 − 4

Write  − 4  as a fraction with denominator  1 .

3 ⋅ 11 /11 + 44 ÷ 11 +  − 4 /1

Multiply  − 4 /1  by  11 /11 .

3 ⋅ 11 /11 + 44 ÷ 11 + − 4 /1  ⋅ 11 /11

Multiply  

− 4 /1  and  11 /11 .

3 ⋅ 11 /11 + 44 ÷ 11 +   − 4 ⋅ 11 /11

Combine the numerators over the common denominator.

3 ⋅ 11 + 44 − 4 ⋅ 11 /11

Simplify each term.  

Multiply  3  by  11 .

33 + 44 − 44 ⋅ 11/ 11

Multiply  − 4  by  11 .

33 + 44 − 44 /11

Simplify the expression.  

Add  33  and  44 .

77 − 44/ 11

Subtract  44  from  77 .

33 /11

Divide  33 by  11 .

3

Answer:

3

Step-by-step explanation:

See image below:)

Yes, these sections of the two tracks, because cross each other while moving in perpendicular directions.

Given that,
You and a friend are driving go-karts on two different tracks. As you drive on a straight section heading east, your friend passes above you on a straight section heading south.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

Here,
As given in the question they both move in a different direction that is perpendicular to each other which implies one of them pass over the other by any means such as a subway or bridge.

Thus, Yes, these sections of the two tracks, because cross each other while moving in perpendicular directions.

Learn more about arithmetic here:

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#SPJ2

Answer:

Hello! answer: 12

Step-by-step explanation:

1/4 × 1/3 = 1/12 therefore there our 12 possible outcomes

Answer:

x^2 + 8x + 12

Step-by-step explanation:

The area is in 4 parts:

x * x,

x * 2,

6 * x, and

2 * 6

So it is x^2 + 2x + 6x + 12, or

x^2 + 8x + 12

Answer:

[tex]x^{2}[/tex]+8[tex]x[/tex]+12

Step-by-step explanation:

(x·x) + (6·x) + (x·2) + (6·2)

[tex]x^{2}[/tex]+6[tex]x[/tex]+2[tex]x[/tex]+12

[tex]x^{2}[/tex]+8[tex]x[/tex]+12

:) ur welcome

Answer:

7.67 > 7.64799

1.5566876 < 1.565687

Answer:

549,000

Step-by-step explanation: