Mathematics High School

I WILL MARK BRAINLEST
ANSWER

I WILL MARK BRAINLEST ANSWER

Answers

Answer 1

Answer:

27y

Step-by-step explanation: becuase i have done that before

Related Questions

Profit and Loss question class -9 ​

Answers

Answer:

Rs 2.25

Step-by-step explanation:

S.P. = 375 * 3.36 = 1260

C.P. = 1125. for 500 mangoes

So for 1 mango,

C.P. = Rs 2.25

Answer:

₹2.25

Step-by-step explanation:

Selling price of 1 mango = ₹3.36

Mangoes in good state = 500 - 125 = 375

Selling price of 375 mangoes = 3.36 *375 = ₹ 1260

Cost price = [tex]\frac{100}{100+profit}*SP[/tex]

                [tex]= \frac{100}{100+12}*1260\\\\=\frac{100}{112}*1260\\\\= 1125[/tex]

   Cost price of 500 mangoes = ₹ 1125

CP of 1 mango = 1125/500 = ₹2.25

Find the value of 1×4+2×5+3×6......n×（n+3）​

Answers

Answer:

n(n+1)(n+5)/3

Step-by-step explanation:

there is no value, as we don't know n.

but we can create a summary formula/ function definition :

this is the sum for k = 1 to n of k×(k+3)

k×(k+3) = k² + 3k

so, the overall sum splits into the sum of k² for k=1 to n, and the sum of 3k for k=1 to n.

and the sum of 3k is 3 times the sum of k for k=1 to n.

Σk² for k=1 to n = [n(n+1)(2n+1)]/6

Σk for k=1 to n = n(n+1)/2

3×Σk for k=1 to n = 3×n(n+1)/2

so, we have a function formula

n(n+1)(2n+1)/6 + 3n(n+1)/2 = n(n+1)(2n+1)/6 + 9n(n+1)/6 =

= n(n+1)(2n+1+9)/6 = n(n+1)(2n+10)/6 = n(n+1)(n+5)/3

The values in a dataset are 3.5, 2.5, 2.5, 3.5, and 3.0. If Xbar (sample mean) = sigma X / n, what is the mean for the sample?

Answers

Answer:

[tex]\bar x = 3.0[/tex]

Step-by-step explanation:

Given

[tex]x: 3.5, 2.5, 2.5, 3.5, 3.0[/tex]

Required

The sample mean

This is calculated using:

[tex]\bar x = \frac{\sum x}{n}[/tex]

So, we have:

[tex]\bar x = \frac{3.5+ 2.5+ 2.5+ 3.5+ 3.0}{5}[/tex]

[tex]\bar x = \frac{15.0}{5}[/tex]

[tex]\bar x = 3.0[/tex]

A line that includes the points (-9, 6) and (-3, s) has a slope of -1. What is the value of s?

Answers

Answer:

s=0

Step-by-step explanation:

We have two points so we can use the slope formula

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

   -1 = (s-6)/(-3 - -9)

   -1 = (s-6)/(-3 +9)

   -1 = (s-6)/(6)

Multiply each side by 6

6*-1 = s-6

-6 = s-6

Add 6 to each side

-6+6 = s-6+6

s=0

Answer:

[tex] \large\sf \: s = 0[/tex]

Value of s is 0.

Step-by-step explanation:

Here,

A line that includes 2 two points are ( -9 ,6) and (-3, s) and has a slope of - 1.

Using slope formula

m = ( y ² - y ¹ ) / ( x ² - x ¹)

Where,

m , is the slope which is -1( y ² - y ¹ ) = ( s - 6 )( x ² - x ¹) = ( - 3 - ( - 9 ) )

substitute the values into the formula

-1 = ( s - 6 ) / ( - 3 - ( - 9 ) )

-1 = ( s - 6 ) / ( - 3 + 9 )

- 1 = ( s - 6 ) / ( 6 )

multiply each side by 2

- 1 × 6 = s - 6 × 6 / 6

- 6 = s - 6

- 6 + 6 = s - 6 + 6 ..( add 6 to each side)

0 = s

Is the percent increase from 50 to 70 equal to thhe percent decease from 70 to 50

Answers

Answer:

No

Step-by-step explanation:

The amounts of change are the same, but the original amounts are different. The ratio for the percent increase from 50 to 70 is 20/50, or 40%. The ratio for the percent decrease from 70 to 50 is 20/70, or about 29%.

Answer:

Step-by-step explanation:

Though the difference is the same, the original value is different. Therefore they are not the same.

Percentage increase from  50 to 70

                                                 [tex]=\frac{70 - 50}{50} \times 100\\\\=\frac{20}{50} \times 100 = 40 \%[/tex]

Percentage decrease from 70 to 50

                                                 [tex]= \frac{70-50}{70} \times 100\\\\= \frac{20}{70} \times 100 = 28.57 \%[/tex]

Mrs. Daley works at a Future Shop and earns $12.35/h plus 4% commission on sales. Last week she worked 45 hours. What was her weekly gross salary if her total sales were $4550?

Answers

Answer:

737.75

Step-by-step explanation:

12.35h + .04c = salary

12.35 (45) + .04(4550) = salary

555.75 + 182 = salary

What two-dimensional shape is formed by the cross section below?

Answers

Answer:

B. Circle

Step-by-step explanation:

Si Doña Clara lleva un tratamiento con 2 medicamentos una toma cada 8 horas y la otra toma cada 12 horas, ¿Despues de la primera toma, a las cuantas horas volverá a tomar los dos medicamentos?

Answers

Respuesta:

24 horas

Explicación paso a paso:

El primer medicamento se toma cada 8 horas.

El segundo medicamento se toma cada 12 horas.

Para Obtian el momento en que ambos medicamentos se volverán a tomar juntos:

Encontramos el mínimo común múltiplo de 8 y 12

Múltiplos de:

8 = 8, 16, 24, 32, 40, 48, 56

12 = 12, 24, 36, 48, 60

El mínimo común múltiplo de 8 y 12 es 24.

Por lo tanto, ambos medicamentos se volverán a tomar después de 24 horas.

Un número real no puede pertenecer a los racionales y a los irracionales a la vez?​

Answers

Step-by-step explanation:

eso es cierto y correcto por supuesto, es tan obvio

pls help !!! :))
17. If m_1 = 98º and mz2 = 19º,
what is mz3?

Answers

Answer:

angle 3 = 79 degree

Step-by-step explanation:

given:

angle 1 = 98 degree

angle 2 : 19 degree

angle 3 =?

angle 2 + angle 3 =angle 1 (sum of two interior angle opposite angles is equal to the exterior angle formed)

19 + angle 3 = 98

angle 3 = 98 - 19

angle 3 = 79 degree

answer is angle 3 79 degrees

an athlete jumps these 4 distances in a long jump competition. which jump does NOT round to 4.7 meters?

Answers

Answer:

3rd jump: 4.642 rounds down to 4.6

negative 4 minus 8 equals

Answers

Answer:

-12

hope this helps!

add me as a friend if u can<3

-4 - 8 = -12

hope that helps

A DJ charges $175 and $35 an hour, h, for parties. Which equation shows the total cost, C, for hiring the DJ? A. C = 175h + 35 B. C = 35h + 175 C. C = (175 + 35)h D. C = 175 + 35 + h

Answers

Answer:

-98 x (175-34)

Step-by-step explanation:

Arlen is planning a dinner party at which he will be able to accommodate seven guests. From past experience, he knows that each person invited to the party will accept his invitation with probability 0.5. He also knows that each person who accepts will actually attend with probability 0.8. Suppose that Arlen invites twelve people. Assuming that they behave independently of one another, what is the probability that he will end up with more guests than he can accommodate

Answers

Answer:

"0.057309921" is the correct answer.

Step-by-step explanation:

According to the question,

The coming probability will be:

= [tex]0.5\times 0.8[/tex]

= [tex]0.4[/tex]

n = 12

p = 0.4

Now,

⇒ [tex]P(X>7)=1-P(X<=7)[/tex]

Here, X = Number of guests

                    [tex]=1-binom.dist(7,12,0.4,1)[/tex]

                    [tex]=0.057309921[/tex]

Thus, the above is the correct answer.  

A fraction that has the same number in the numerator
and the denominator is equal to what value?

Answers

i think its value 1 coz e.g if fraction was somethin like 12/12 i do 12÷12 which equals to one so all fracfions with same denominator and numerator equal to value 1

*Chuckles* my GPA is in danger

Answers

hi! i believe the answer is a, because if b (in this case 0.2) is less than 1 and greater than 0 its exponential decay!! good luck with the rest of your hw and i hope this helps

Answer:

A

Step-by-step explanation:

Exponential growth is when numbers increase rapidly in an exponential fashion so for every x-value on a graph there is a larger y-value. Decay is when numbers decrease rapidly in an exponential fashion so for every x-value on a graph there is a smaller y-value. So here the one that fits the description is A.

If 4 US dollars can be exchanged for 1.75 Euros. How many Euros can be obtained for 144 US dollars?

Answers

Answer:

63 euros.

Step-by-step explanation:

4 dollars = 1.75 euros

1 dollar = 1.75 / 4 euros, so

144 dollars = (1.75/4) * 144

= 63 euros.

Question
In order to save for a new car, Charles adds money each month to a savings account which earns interest that is compounded monthly. Charles has created the expression 400((1+0.0212)12⋅3−10.0212) to calculate how much money he will have in his savings account when he is ready to purchase the car.

What do the values 400, 0.02, 12, and 3 represent in the expression?

Answers

Answer:

Step-by-step explanation:

A principal of $2700 is invested at 6.25% interest, compounded annually. How much will the investment be worth after 13 years?
Use the calculator provided and round your answer to the nearest dollar.
$

Answers

Answer:

$5938

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Compounded Interest Rate Formula: [tex]\displaystyle A = P(1 + \frac{r}{n})^{nt}[/tex]

P is principle amountr is raten is compounded ratet is time

Step-by-step explanation:

Step 1: Define

Identify variables

P = 2700

r = 6.25% = 0.0625

n = 1

t = 13

Step 2: Find Interest

Substitute in variables [Compounded Interest Rate Formula]:                     [tex]\displaystyle A = 2700(1 + \frac{0.0625}{1})^{1 \cdot 13}[/tex][Exponents] Multiply:                                                                                         [tex]\displaystyle A = 2700(1 + \frac{0.0625}{1})^{13}[/tex](Parenthesis) Divide:                                                                                        [tex]\displaystyle A = 2700(1 + 0.0625)^{13}[/tex](Parenthesis) Add:                                                                                            [tex]\displaystyle A = 2700(1.0625)^{13}[/tex]Evaluate exponents:                                                                                         [tex]\displaystyle A = 2700(2.19926)[/tex]Multiply:                                                                                                             [tex]\displaystyle A = 5938[/tex]

La sombra de un árbol cuando los rayos del sol forman con la horizontal un ángulo de 36º, mide 11 metros. ¿Cuál es la altura del árbol?

Answers

Answer:

La altura del árbol es 8 metros.

Step-by-step explanation:

La sombra de un árbol, cuando los rayos del sol forman con la horizontal un ángulo de 36º, mide 11 metros. Esto se puede observar en la imagen adjunta.

La trigonometría estudia la relación entre los lados y ángulos de los triángulos. Las razones trigonométricas de un ángulo α son las razones obtenidas entre los tres lados de un triángulo rectángulo (uno de sus ángulos es recto y mide 90°).

La tangente de un ángulo es la razón entre el cateto opuesto y el cateto contiguo o cateto adyacente. En este caso se debe aplicar dicha relación trigonométrica.

[tex]tan(\alpha )=\frac{cateto opuesto}{cateto adyacente}[/tex]

En este caso, se conoce el ángulo, cuyo valor es 36°, y el cateto adyacente, cuyo valor es 11. Reemplazando:

[tex]tan(36 )=\frac{cateto opuesto}{11}[/tex]

Resolviendo:

cateto adyacente= tan(36)*11

cateto adyacente= 7.99 metros ≅ 8 metros

La altura del árbol es 8 metros.

Please Answer The Question Below As Fast As Possible Who Answers First Get's Brainliest..

Answers

Answer:

110

Step-by-step explanation:

Using the expansion

(a + b)³ = a³ + b³ + 3ab(a + b)

Given

x + [tex]\frac{1}{x}[/tex] = 5 ( cube both sides )

(x + [tex]\frac{1}{x}[/tex] )³ = 5³ = 125 ← expand left side using identity

x³ + [tex]\frac{1}{x^3}[/tex] + 3(x × [tex]\frac{1}{x}[/tex] )(x + [tex]\frac{1}{x}[/tex] ) = 125

x³ + [tex]\frac{1}{x^3}[/tex] + 3(1)(5) = 125

x³ + [tex]\frac{1}{x^3}[/tex] + 15 = 125 ( subtract 15 from both sides )

x³ + [tex]\frac{1}{x^3}[/tex] = 110

Answer:

Step-by-step explanation:

Hope this helps u !!

A plane, initially traveling 150 mi./hr. 100 east of north, suddenly enters a region where the wind is blowing at 50 mi./hr. from the southwest.

What is the plane’s resultant direction?

Answers

Answer:

the Velocity of the plane is 100 mi/hr along the northeast direction

Step-by-step explanation:

According to the Question,

Given That, the Initial velocity of the plane is 150 mi/hr along the east north direction and the wind is blowing at 50 mi/hr along the southwest direction  

since the velocity of wind and plane is exactly opposite

the relative velocity of the plane with respect to the wind is given by

[tex]V_{r} = V_{p} -V_{w}[/tex]  , where  [tex]V_{p}[/tex] is the velocity of plane = 150mi/hr and [tex]V_{w}[/tex] = velocity of wind = 50 mi/hr

Therefore,  Relative Velocity = 150-50 ⇒ 100mi/hr along northeast direction

Thus, the velocity of the plane is 100 mi/hr along the northeast direction

The sum of 3 numbers is 108. The first number is 8 less than the second. The third number is 3 times the first. What are the numbers?

Answers

Step-by-step explanation:

hope you can understand it properly

A university department administers a survey, regarding student satisfaction.
Based on the survey results, the department provides a confidence interval
estimate of 60% to 80% for student satisfaction. If the department wishes to
construct a confidence interval that more accurately represents the
proportion of student satisfaction, how should the design be altered?
Select all that apply.
A. Use a smaller confidence level.
B. Use a larger sample size.
C. Use a larger confidence level.
D. Use a smaller sample size.

Answers

Answer:

B. use a larger sample size

Step-by-step explanation:

the bigger the sample size, the more accurate the results are in stats.

Según la gráfica cuadrática de la expresión y= x² + 1 ¿Cuales serían las coordenadas cuando x es igual a -2,-1 y 0?

Answers

Answer:

When  x =  -2     P  ( -2 ;  5)

When   x = -1       Q  (  -1 ; 2)

When   x  = 0       R  ( 0 ;  1)

Step-by-step explanation:

y =  x²  +  1

When    x  =  -2

y  =  ( -2)²  + 1        y  =  5     point  P  ( -2 ;  5)

When  x  =  -  1

y  =  (  -1)² + 1         y  =  2     point  Q  ( -1 ; 2 )

When x   =  0

y  =  (0)²  +  1         y  =  1      point   R  (  0 ;  1 )


A rectangular prism has a length of
feet
, a width of 3 feet, and a height of 5 feet. If the width of the prism is doubled, which statement is true about the new rectangular prism?

Answers

Answer:

Its volume is 2 times the original volume.

Step-by-step explanation:

It cant be the first 2 because you are making it bigger, not smaller. and it cant be the last one because you are only doubling one of the parts.

Answer:

Step-by-step explanation:

its is the second one

HELP PLZZ How many and what type of solutions does 6x^2−3x+5 have?





1 rational solution


2 rational solutions


2 irrational solutions


2 nonreal solutions

Answers

so here, you have to find the discriminant and if it is less than zero. 3^2-120 is less than zero, so the equation has 2 nonreal solutions, i believe!

-6x + 7y = 9
2x - 2y = 4

Answers

7909081131

8709196751

7250401594

9835094365

8340436845

7258061562

please contact this Nr. for the best answer

This is world best teacher

Determine the range for the function y = (x - 3 )^2 + 4.

Answers

Answer:

Solutions are x=2 and x=−2 . At these points the function has vertical asymptotes. To address the range, let's first transform...

ANYONE A ACE OR EXPERT? PLEASE ANSWER THIS I NEED HELP

Answers

Answer:

Ace here. What do you need help with?

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