Please help!!!
For questions 10-13 use f(x)=4(1/2)^x

Answer:

she'll still owe him 8.21

Step-by-step explanation:

i dont know what you mean by write it as a negative integer ?

Answer:15

Step-by-step explanation: if your at -9,-5 you would be on the 3rd quadrant, and in order to get to 6,-5 (4th quadrant) you would just move to the right. you would only move right because the y-axis stays the same but the x-axis changes.

Answer: 15

Step-by-step explanation:

the equation to find the length of a line using the points given:

[tex]\sqrt{(x2-x1)^2+(y2-y1)^2}[/tex]

therefore you should understand which is y2, x2,y1 and x1

so you should always check which y value is bigger (the y value is the number in the right side of the point) so if the y value is bigger (y2) then eventually the value next to it which is x will always become x2 if the y value is big (y2)

so the other two values of the other point should become x1 and y1 since you already figured out the lager y value.

so now as for this question y2= -5, y1= -5, x2= 6 and x1= -9

now substitute these values to the equation I mentioned before ( you should make sure to remember the equation for sure as it is required when doing these types of questions)

[tex]\sqrt{[6-(-9)]^{2} +[-5-(-5)]^2} \\\sqrt{(6+9)^2 + (-5+5)^2[/tex]

[tex]\sqrt{15^2+0^2} \\\sqrt{225} \\15[/tex](therefore 15 is the answer you have been looking for!)

I hope you understood and don't forget the equation which is the main help!

Answer:

how are you doing where you can do it for 5 Pts

Step-by-step explanation:

Answer:

Step-by-step explanation:

The number of ways of picking a panel of judges comprising of 2 men and 2 women is 280 ways

Given data

number on men = 5

number of women = 8

The number of ways of picking a panel of 2 men and 2 women

= 5 combination 2 * 8 combination 2

= 5 C 2 * 8 C 2

= 5! / ( 2! ( 5 - 2 )! * 8! / ( 2! ( 8 - 2 )!

= 5! / ( 2! 3! ) *  8! / ( 2! 6! )

= 5 * 4 * 3! / ( 2! * 3! ) * 8 * 7 * 6! / ( 2! * 6! )

= 20 / 2 * 56 / 2

= 10 * 28

= 280 ways

The number of ways of picking a panel of judges comprising of 2 men and 2 women is 280 ways

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The coordinate of intersection with the x-axis is: (-3, 0).

The coordinate of intersection with the y-axis is: (0, 6).

The area of the triangle is 9 unit²

A linear equation is defined as an equation in which the highest power of the variable is always one.

The linear equation is given as:

y = 2x+6

Intersection with the y-axis

Substitute, x = 0

⇒ y = 2x + 6

⇒ y = 2(0) + 6

⇒ y = 6

As a result,: y = 2x+6 intersects with the y-axis at (0, 6)

Intersection with the x-axis

Substitute, y = 0

⇒ y = 2x + 6

⇒ 0 = 2x + 6

⇒ 2x =  - 6

⇒ x = - 3

As a result,: y = 2x + 6 intersects with the x-axis at: (-3, 0)

The area of the right-angled triangle

The area is calculated as:

Area of triangle = 1/2×Base×Height

Area of triangle = 1/2×3×6

Area of triangle = 9 unit²

The coordinate of intersection with the x-axis is: (-3, 0).

The coordinate of intersection with the y-axis is: (0, 6).

The area of the triangle is 9 unit²

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Answer:

The smallest number that Aleena could be thinking of is 2.75.

7^4.3^-6.y is equivalent to 7.7.7.7.y/3.3.3.3.3.3 which is option (B).

b^10/b^4 is b^6 and (p^2+p-8)-(-4p^2-p+3) is 5p^2+2p-5.

Two expressions with equal sign in between is called as equation.

4. 7^4.3^-6.y

In the given expression, 7 has 4 exponent and 3 has -6 exponent.

This can be written as 7.7.7.7.y/3.3.3.3.3.3.

5. b^10/b^4 is b^10-4=b^6.

6. (p^2+p-8)-(-4p^2-p+3)

=p^2+p-8+4p^2+p-3

=5p^2+2p-5.

Therefore 7^4.3^-6.y is equivalent to 7.7.7.7.y/3.3.3.3.3.3 which is option (B), b^10/b^4 is b^6 and (p^2+p-8)-(-4p^2-p+3) is 5p^2+2p-5.

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The marble will roll 180cm distance in fifth second.

Distance travelled by an object in rectilinear motion is always in arithmetic Progression. Arithmetic Progression is collection of number in increasing or decreasing order with a common difference.

The marble rolls 20cm, 60cm, 100cm, 140cm in 1st, 2nd, 3rd, 4rth second respectively

As the ball travels in rectilinear motion on floor, so the distance covered by it in successive seconds will be in Arithmetic Progression

so, 5th term of the AP 20,60,100,140..... will be the distance travelled by it 5th second

Since A=20 and common difference(d)=40

then, 5th term= A + (5-1)d

or, 20+ (4×40) = 180cm

Final answer, the marble will roll 180cm in 5th second.

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Statement in step 8 is the proof that <ABD and <EBC are complementary angles.

An angle in mathematics refers to an arc that joins two points. For angles to be formed there should be two points, the starting point and the ending point. In some cases the starting point coincides with the ending point, in this case the angle formed is 360 degrees which is equivalent to a circle. We can hence say that angle in a circle is 360 degrees

When angles are formed by two points in the same straight line or say two colinear points the angle formed here is 180 degree. Hence we say angles in a straight line is 180 degrees.  In a case where a line intersects the straight line, the intersecting line bisects the the angle in a straight line. The sum of the two angles formed is 180 degrees. Such angles are said to be supplementary angles.

Assuming the bisector of the straight line in a perpendicular bisector, here the angle 180 is divided into two equal parts then each angle is 90 degrees.

When angle 90 degrees is bisected two different angles are formed. The sum of these two angles are known as complementary angles.

Hence angle <ABD and <EBC are complementary angles formed from bisecting angle <DBC which is 90 degrees or a right angle triangle

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The formula for finding the sum of a geometric series is:

S n = a₁ (1-rⁿ )/(1-r)

The four quantities in the formula are S n, a₁, r, n

An infinite geometric series is the outcome of an unlimited geometric sequence. An infinite geometric series is the outcome of an unlimited geometric sequence. This series wouldn't have a finish. It is possible to calculate the sum of all finite geometric series.

The terms in the sequence will grow steadily larger, but adding the larger numbers together will not provide a solution if the common ratio of an infinite geometric series is greater than one.

The formula for finding the sum of a geometric series is:

S n = a₁ (1-rⁿ )/(1-r)

The four quantities in the formula are S n, a₁, r, n

The description is as follows:

n be the number of terms

a₁ be the first term

r be the common ratio

[tex]S_n[/tex] be the sum of a geometric series

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Answer:Omg JUST use slope intercept form like I said: Pick a point in this case I have picked, but you can any: (15, 560) (20, 480). Remember

Y2 - Y1 /X2-X1 = M (Your slope). In this case 480-560/20-15 = -80/5 = -16

Now you have your slope. Y - Y2=M(x - x1). In this case Y - 560 = -16(x-15)

Distrubute: Y - 560 = -16x +240. Add 560 on both side. Y= -16x +800

And yes it water decreases as time increases.

Step-by-step explanation:

Beth knows the perimeter, P, and width, w, of a

rectangular window in her living room. Which

formula can she use to find the length, 1, of the

window?

First we know about How to Find the perimeter?

Rectangles have four sides, congruent opposite sides, and four right angles and we find the perimeter of a rectangle with the equation P=2l+2w. Explore this formula, rectangles, and examples of finding rectangle perimeters.

so ,

The formula for the perimeter of a rectangle is given below: Perimeter = length + length + width + width P = l + l + w + w Or, P = 2 ( l + w) Hence, the formula for the perimeter of a rectangle, P = 2 × (length + width) = 2 × (sum of adjacent sides) .

LINK-

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The arithmetic mean an of the given terms a_{n-1}=7, a_{n+1}=1  is

a (n) = -3.

a_{n-1}=7, a_{n+1}=1  

a(n) =(1-7)/2

a (n) = -3

The arithmetic mean is the most straightforward and widely used method of calculating a mean or average. It only requires adding up a group of figures, then dividing the result by the entire amount of figures in the series. Consider the numbers 34, 44, 56, and 78 as an example. It totals 212.

The mean or arithmetic average are other names for the arithmetic mean. It is determined by adding up each number in a particular data set, then dividing the result by the overall number of items in the data set. For uniformly distributed integers, the middle number serves as the arithmetic mean (AM).

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The value of x to the nearest tenth is 8.9 cm.

The radius of the circle is 5 centimetres. Line segment ab is a diameter of the circle.

The diameter of the circle is twice the length of the radius.

Hence, the value of x can be found as follows:

AB = 10 cm

Using Pythagoras theorem,

c² = a² + b²

where

Therefore,

10² - 4.5² = x²

100 - 20.25  = x²

x² = 79.75

x = √79.75

x = 8.93028554975

x = 8.9

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Answer:

2 times as much

Step-by-step explanation:

1 hour 2/3 = 60 + (2/3) 40 mins = 100 minutes

3 hours 1/3 = (60 ×3 ) + 20 mins = 200 mins

200 is twice as much as 100

Answer:

2 times as much

Step-by-step explanation:

1 hour 2/3 = 60 + (2/3) 40 mins = 100 minutes

3 hours 1/3 = (60 ×3 ) + 20 mins = 200 mins

200 is twice as much as 100

Press the heart button please thank you.

Answer:

w = -2, (-1/5)

Step-by-step explanation:

2|4w - 1| = 3|4w + 2|

8w - 2 = 12w + 6

-12w      -12w

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

-4w - 2 = 6

      +2   +2

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

-4w = 8

÷-4    ÷-4

w = -2

2|4(-2) - 1| = 3|4(-2) + 2|

2|-8 - 1| = 3|-8 + 2|

2|-9| = 3|-6|

18 = 18

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

2|4w - 1| = -(3|4w + 2|)

2|4w - 1| = -3|4w + 2|

8w - 2 = -12w - 6

+12w      +12w

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

20w - 2 = -6

        +2   +2

20w = -4

÷20    ÷20

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

w =(-1/5)

2|4(-1/5) - 1| = 3|4(-1/5) + 2|

2|(-4/5) - 1| = 3|(-4/5) + 2|

2|(-9/5)| = 3|(6/5)|

3.6 = 3.6

I hope this helps!

Total cost function is C=42000+21t

Revenue function is R=45t

Profit function is P=24t-42000

The breakeven number of hours is 1,750

What is the total variable cost per hour of operating the truck?

The total variable cost per hour of operating shingle delivery truck is the sum of the hourly fuel and maintenance cost and the hourly rate of the operator

total variable cost per hour=$9.50+$11.50

total variable cost per hour=$21.00

The liner equation  formula for total cost is as shown below:

y=a+bx

y=total cost=C

a=fixed cost=cost of truck=42000

b=total variable cost per hour=21

x=number of hours the truck is operated=t

C=42000+21t

The total revenue is the customer charge per hour multiplied by number of hours

R=45t

P=R-C

P=45t-(42000+21t)

P=24t-42000

The breakeven number of hours is achieved at the point where the total cost is the same as revenue

45t=42000+21t

45t-21t=42000

24t=42000

t=42000/24

t=1,750 hours

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Answer:

Step-by-step explanation:

y = mx + b is the equationof the line where m is the slope and b is the y intercept

slope between t points = (8 - 0)/ (3 -1 )

= 8/2

=  4

y = 4x + b

substitute (1,0) in the equation to get b

0 = 4(1) + b

b = -4

equation will be y = 4x -4

The prediction of the number of students who spend more than 2 hours each night doing homework are 118.

It is given in the question that in a random survey of 50 students and fund that 14 of them spend more than 2 hours each night doing homework.

There are 421 students in the school.

We have to predict the number of students who spend more than 2 hours each night doing homework.

Probability of number of students who spend more than 2 hours in doing homework = 14/50 = 7/25= 0.28

If there are 421 students, number of students who spend more than 2 hours in doing homework = 0.28*421 = 117.88 ≈ 118.

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Answer:

y = 2x - 13.

Step-by-step explanation:

The point-slope form of a line is:

y - y1 = m(x - x1)

Substituting the given values:

y - 1 = 2(x - 7)

y = 2x - 14 + 1

y = 2x - 13.

The slope of the line passing through two points (-1, 6) and (3, -4) is Option A ( m = [tex]\frac{-5}{2}[/tex] )

It is given that, the line is passing through two points (-1, 6) and (3, -4)

Slope is the measurement of the level of steepness of the line or it is a line's steepness determined by looking at its slope. Slope is calculated mathematically as "rise over run" (change in y divided by change in x).

The formula to find the slope of the line passing through two points is given by

m = [tex]\frac{y2 - y1}{x2 - x1}[/tex]

We need to find the slope of the line passing through both points

where y1 = 6, y2 = -4, x1 = -1, x2 = 3

Putting values in the formula to find the slope of the line

we get,

m = [tex]\frac{-4 - 6}{[3 -(-1)]}[/tex]

m = [tex]\frac{-10}{4}[/tex]

m = [tex]\frac{-5}{2}[/tex]

Hence The slope of the line passing through two points (-1, 6) and (3, -4) is m = [tex]\frac{-5}{2}[/tex]

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In the given question angle ∠JKN is 63°.

So,

Since KN bisects ∠LKM which is 70°.

Now, we know that: (refer to the diagram below)

Therefore, in the given question angle ∠JKN is 63°.

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Answer: 5

Step-by-step explanation:

GH=GD+DH

GD=DH ==> indicated by the ticks on the two line segments GH and DH.

GH=DH+DH

4x-4=8+8

4x-4=16

4x=20

x=5

Answer: D. The result is an outlier and there is no gap in the data.

The statement describes this result is; D. The result is an outlier and there is no gap in the data.

In statistics, an outlier is a data point that differs significantly from other observations. An outlier may be due to variability in the measurement or it may indicate experimental error; the latter are sometimes excluded from the data set.

From the graph, at 16.5 hours, the exam score is approximately 90%. Thus, we can conclude that if a student spends 16.5 hours studying and receives a mark of 61.4%, then the result is an outlier and there is no gap in the data.

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The value for the given line DF are-

For the given values in question,

DE = 6x + 1 and EF = 7x - 4.

As, E is the midpoint of DF.

Thus,

DE = EF

Pu the values.

6x + 1 = 7x - 4

On solving.

x = 5

Put the values in the lines.

DE = 6x + 1

DE = 6×5 + 1

DE = 31 units.

EF = 7x - 4

EF = 7×5 - 4

EF = 31 units.

DF = DE + EF

DF = 31+ 31

DF = 62 units.

Thus, the values for the line segment are obtained.

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Answer:

the mean is -2 degrees celsius

Step-by-step explanation:

-7 + -1 + -4 + 0 + 2 = -10

-10 / 5 = -2

The distance between the midpoints of segments OA and OB is 1.5 cm.

Given that, points O, A, and B lie on the same line. OA = 12 cm, OB = 9 cm.

We need to find the distance between the midpoints of segments OA and OB.

A midpoint of a line segment is the point on a segment that bisects the segment into two congruent segments. The midpoint of a line segment is the point on a segment that is at the same distance or halfway between the two ending points.

Let X be the midpoint of OA and Y be the midpoint of OB.

Now, the midpoint of OA is OX=AX=OA/2

=12/2=6 cm

Then, the midpoint of OB is OY=YB=OB/2

=9/2=4.5 cm

The distance = 6-4.5=1.5 cm

Therefore, the distance between the midpoints of segments OA and OB is 1.5 cm.

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