helppppp please I will give brainliest​

Answer:

14. 13.65

15. 7.53

17. 0.0371

18. 0.81

19. 0.864

Here are some answers! Hope this helps

Answer:

a=61

Step-by-step explanation:

3a-63=a+59

2a-63=59

2a=122

a=61

Answer:

Step-by-step explanation:

He eats 1/6 or 1/5 of the original cake.

All  you need to do to get the answer is multiply the denominators.

1/5 * 1/6 = 1/30

If there was something in the numerators. you would multiply them too.

So suppose the two fractions were 3/5 and 2/7

The answer would be 3 * 2 / 5 * 7 = 6 / 35

General rule

When multiplying two fractions, multiply numerator * numerator / (denominator * denominator).

Answer:

y=-1/2x+4

y=2x+5

y=x+2

Step-by-step explanation:

1. The equation of the line is y = - 4 / 9 x + 25 / 9.

2. The equation of the line is y = 5 /3 x -  14 / 3

3. The equation of the line is  y = x + 2

The equation of a line can be represented in slope intercept form as follows:

y = mx + b

where

Therefore, the equation of the line can be found as follows:

1.

(4, 1)(-5, 5)

m = 5 - 1 / -5 -4

m = 4 / -9

m = - 4 / 9

Let's find y-intercept

1 = - 4 / 9(4) + b

1 + 16 / 9 = b

b =  9 + 16 / 9

b = 25 / 9

Hence, thee equation of the line is  y = - 4 / 9 x + 25 / 9

2.

(-2, -8)(4, 2)

m = 2 + 8 / 4 + 2

m = 10 / 6

m = 5 / 3

Let's find y-intercept

2 = 5 / 3 (4) + b

2 - 20 / 3 = b

b =  6 - 20/ 3

b = - 14 / 3

Therefore, the equation of the line is y = 5 /3 x -  14 / 3

3.

(0, 2)(-2, 0)

m = 0 - 2 / -2 -0

m = - 2 / -2

m = 1

Let's find y-intercept

2 = 1(0) + b

b = 2

Therefore, the equation of the line is y = x + 2

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Answer:

Not enough data

Step-by-step explanation:

Answer:

let The original price....... was

...... X

5/4 of x =16000

x=16000*4/5

x=3200*4

x=12800

So The original Price was 12800$......

Answer:

$6.84

Step-by-step explanation:

This is quite a simple question, simply add the new deposited amount into the original balance to get your answer.

The value of a, b and c are found as 6, 10 and 2 respectively.

Values for exponents, commonly referred to as powers, indicate how many often to multiply a quantity by itself.

The given expression is;

\(4x^{8} y^{c} = \frac{24x^{b}y^{-3} }{ax^{2} y^{-5} }\)

Solving expression using the law of indices.

\(x^{8} y^{c} = \frac{6x^{b-2}y^{-3+5} }{a}\)

\(ax^{8} y^{c} = {6x^{b-2}y^{2} }\)

Comparing powers of both sides:

a = 6

8 = b-2 : b = 10

c = 2

Thus, the value of  a, b and c are found as 6, 10 and 2 respectively.

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Answer:

Bike

Step-by-step explanation:

Anna should go biking because when she runs it goes 63 calories per mile, and 63*2 is just 126 and that does not meet the goal of 142 calories. However, in biking if she goes 3 miles she burns 240 calories, so 240/3=80 so that means 80 calories a mile. 80*2 miles makes 160 which is more than enough calories burnt.

Answer:

Anna Should bike

Step-by-step explanation:

Run:

When she runs she only burns 63 calories in an hour, since she wants to travel 2 miles, multiply 63 by 2 which equals 124 calories per two hours. 124<142, so running wouldn't burn 142 calories.

Bike:

when she bikes, she burns 240 calories per every 3 miles. you have to find how many calories she burns in 1 mile first. To do this you divide 240 by 3. This equals 80 calories every mile. Because she wants to travel 2 miles, multiply 80 by 2 to get 160 calories burned every 2 miles. since 180>160 she should take the bike.

Ciana should purchase the skirt at the store across town because the total economic cost will be lowest.

Ciana makes $30 per hour at her work, and her purchase decision includes the opportunity cost of lost wages:

Total economic cost:

Local store = $114 + [1/4 hours x 2 (round trip) x $30] + (1/2 hours x $30 spent shopping) = $144

Across town = $86 + [1/2 hours x 2 (round trip) x $30] + (1/2 hours x $30 spent shopping) = $131

Neighboring city = $60 + [1 hour x 2 (round trip) x $30] + (1/2 hours x $30 spent shopping) = $135

Ciana should buy a skirt at the store across town. Because it has the lowest total economic cost ($131).

Opportunity cost is the lost benefit or additional cost of choosing one activity or investment over another. Economic costs include both accounting costs and opportunity costs.  

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Answer:

x = \(\frac{19}{20}\)

Step-by-step explanation:

Decimal: x = 0.95

in pic

(Hope this helps can I pls have brainlist (crown)☺️)

Answer:

v' (0.5,1) , u' (0,1) , t' (-0.5,0) , w' (-0.5, -1)

Answer:

-12

Step-by-step explanation:

Order of operations:

PEMDAS

First, do parenthesis, 2 x 2.2 = 4.4 then do -7.6 - 4.4 = -12

There are 43,680 different ways to choose a President, Vice President, Treasurer, and Secretary from 16 students.

An arrangement of items in a particular order is referred to as a permutation. Permutations are frequently used in mathematics to count the number of possible configurations of a set of items. P(n,r) stands for the quantity of permutations of n items taken r at a time and is equal to n! / (n - r)!, where n! (also known as "n factorial") is the sum of all positive numbers from 1 to n.

Given that, the number of students = 16 and the positions are 4.

Thus, after every selection we have:

16 * 15 * 14 * 13 = 43,680

Hence, there are 43,680 different ways to choose a President, Vice President, Treasurer, and Secretary from 16 students.

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The solution of the given algebraic expression is: ⁷/₁₂ + ⁴/₆q

We are given the algebraic expression as:

¹¹/₁₂ - ¹/₆q + ⁵/₆q - ¹/₃

Combining Like terms gives us:

(¹¹/₁₂ - ¹/₃) + (⁵/₆q - ¹/₆q)

Solving both brackets individually gives us:

((11 - 4)/12) + ⁴/₆q

= ⁷/₁₂ + ⁴/₆q

Thus, we conclude that is the solution of the given algebraic expression problem

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9514 1404 393

Answer:

  C.  (1, -1)

Step-by-step explanation:

Dilation by a factor of 1/3 multiplies each coordinate value by 1/3.

  (x, y) ⇒ (x/3, y/3)

  K(3, -3) ⇒ K'(3/3, -3/3) = K'(1, -1)

Answer:

y intercept would be 8, and this value shows the minimum wage or charge for using the computer, no matter what time you use it.

The number of points to be removed from the graph is 2

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

The graph

From the graph, we can see that

2 points have the same y coordinates

Another 2 points have the same y coordinates

For it to be a function, one of the 2 points must be removed each

So, we have the number of points to be removed from the graph is 2

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Answer:

16

Step-by-step explanation:

 2/0.25 = 8

2 x 8 = 16

Answer:

I DONT KNOW DO YOU?

Answer:

Base rate: $120

Rate: $2 per person

Equation: f(x)=2x+120

Step-by-step explanation:

If 30 people cost $180 and 50 people cost $220, the charge for 20 extra people is $40.  This means, \(\frac{220-180dollars}{50-30people}=\frac{40dollars}{20people}=2\frac{dollars}{person}\).

These values correspond to a base rate for the bus of $120.

The function for the cost per bus with x number of people on it would be:

\(f(x)=2x+100\)

This can be checked by using the values given in the problem:

\(f(30)=2(30)+120=180\\f(50)=2(50)+120=220\)

The base rate of $120 and $2 per person satisfies the given equation and established values.

Answer:

is 2y

Step-by-step explanation:

Answer:

0.273

Step-by-step explanation:

Can you please give me brainliest?

Answer:

3/11 written as a decimal would be 0.2727 which would then be 0.273.

Step-by-step explanation:

Hope this was helpful. Have a good day.

Answer:

The confidence Interval is [- 0.7053  10.4521]

a: The  hypotheses  are

H0: μ1=μ2    against the claim Ha :μ1≠μ2

b. The critical value for t∝/2 for 17 d.f  t > 2.508 and  t < -2.111

c. t= -2.8422

d. The calculated value of t= -2.8422 is less than t < -2.11 the critical value therefore we reject H0 and conclude there is a difference between the two means.

Step-by-step explanation:

When the standard deviations are not the same then the confidence intervals for mean differences are calculated as

(x1`-x2`)- t∝/2 √s1²/n1 + s2²/n2 < u1-u2 < (x1`-x2`)+ t∝/2 √s1²/n1 + s2²/n2

x1`= 21        x2`= 27

n1=  10       n2= 14

s1= 5.6       s2= 4.3

The degrees of freedom is calculated using

υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1

= 17

The t∝/2 for 17 d.f = 2.11

Putting the values

(x1`-x2`)- t∝/2 √s1²/n1 + s2²/n2 < u1-u2 < (x1`-x2`)+ t∝/2 √s1²/n1 + s2²/n2

(21-27) - 2.11√5.6²/10+ 4.3²/14 < u1-u2 <(21-27)  +2.11√5.6²/10+4.3²/14

6- 2.11*2.111 < u1-u2 <  ( 6 )  +2.11*2.111

6- 4.4521 < u1-u2 <  ( 6 )  +5.294

- 1.5479 < u1-u2 <  10.4521

The confidence Interval is [- 0.7053  10.4521]

a: The  hypotheses  are

H0: μ1=μ2    against the claim Ha :μ1≠μ2

The claim is that there is a difference in the average time spent by the two services

b. The critical value for t∝/2 for 17 d.f  t > 2.508 and  t < -2.111

The degrees of freedom is calculated using

υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1

= 17

c. The test statistic is

t= (x1`-x2`)  /√s1²/n1 + s2²/n2

t= (21-27)  /√5.6²/10+ 4.3²/14

t= -6/2.111

t= -2.8422

d. The calculated value of t= -2.8422 is less than t < -2.11 the critical value therefore we reject H0 and conclude there is a difference between the two means.

The value of y is 4√3

Similar triangles have the same corresponding angle measures and proportional side lengths. The corresponding angles of similar triangles are congruent or equal.

Also , the ratio of corresponding sides of similar triangles are equal.

There are two triangles that are similar

Therefore;

y /16 = 4/y

y² = 48

y = √48

y = √16 × √ 3

y = 4√3

Therefore, the value of y is 4√3

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The function f(x)* = 1 + x^2 is defined for all real numbers x, so the domain is all real numbers, or (-∞, ∞).

In determining the function's output values, one must consider its collection of feasible results to extract the range. Reviewing f(x)* exhibits a minimum value of 1 due to x^2 being perpetually non-negative, while adding another factor merely preserves positivity.

Concurrently as x skyrockets, so too does the value of f(x)* given that approaching infinity generates infinitely larger powers than any constant coefficient subordinated by it. Consequently, the overall range of f(x)* becomes [1, ∞), enwrapping all feasible solutions equivalent or superior to 1.

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The areas of the curve under the z-scores are 0.152 and 0.311

The area under the standard normal curve to the right of z=1.03.

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

z = 1.03

To determine the area of the curve, we make use of the z-score table of values

Using the z-score table of values, we have the following value

Area = 0.152

The area under the standard normal curve between z= -2.28 and z = -0.46

In this case, we have

Between z = -2.28 and z = -0.46

To determine the area of the curve, we make use of the z-score table of values

Using the z-score table of values, we have the following value

Area = 0.9887 - 0.67724

Evaluate

Area = 0.311

Hence, the areas are 0.152 and 0.311

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