It takes 24 workers to complete the job in 5 days. How many days would 15 workers take to do the same job, assuming all the workers work at the same pace?

Answer:

It takes 2.5 seconds for the ball to reach its  highest point

Maximum height is 196 feet

Step-by-step explanation:

h(t) = -16t^2+80t +96

a=-16, b= 80, c=96

To find the maximum height , we need to find vertex

Let find x coordinate of vertex

[tex]t=\frac{-b}{2a}[/tex]

Plug in the values

[tex]t=\frac{-80}{2(-16)}= 2.5[/tex]

It takes 2.5 seconds for the ball to reach its  highest point

Now plug in 2.5 for t to find maximum height

[tex]h(t) = -16t^2+80t +96[/tex]

[tex]h(2.5) = -16(2.5)^2+80(2.5) +96=196[/tex]

Maximum height is 196 feet

Answer: [tex]398.5750[/tex]

Step-by-step explanation:

It is important to remember that the fourth digit after the decimal point is in the ten-thousandth place.

Then, given the  following number:

[tex]398.574986215[/tex]

You can follow these steps in order ti round it to the nearest ten-thousandth:

1. You can identify that the digit in the ten-thousandth place is:

[tex]9[/tex]

2. Identify the digit to the right of [tex]9[/tex]. This is:

[tex]8[/tex]

3. Since:

 [tex]8>5[/tex]

 You must round up. Increase the digit [tex]9[/tex] by 1. (Notice that [tex]9+1=10[/tex], then the digit to the left of  [tex]9[/tex] increases by 1 too). Then:

[tex]398.5750[/tex]

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≤, ≥ - closed circle

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Answer in the attachment.

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≤, ≥ - solid line

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x = -6 - its a vertical line

Answer:

No

Yes

Yes

No

Step-by-step explanation:

X's repeat

X's don't repeat

X's don't repeat

X Values repeat

Answer:

C. 12x + 6y = 30

Step-by-step explanation:

A. x  3 4 5  

   y   3    6     9

We need to make and equation

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

    = (9-3)/(5-3)

    6/2

  3

The slope is 3

Using point slope form

y-y1 = m(x-x1)

y-3  = 3(x-3)

Distribute

y-3 = 3x-9

Add 3 to each side

y = 3x-9+3

y = 3x-6

Let x=0

y = 0-6

y = -6

B. y = 4x – 7

Let x = 0

y = 0-7

y = -7

C. 12x + 6y = 30

Let x = 0

12(0) + 6 y = 30

6y = 30

Divide by 6

6y/6 = 30/6

y =5

D. A linear function that goes through point 1, negative 1 and point 0, 4

The point ((0,4) says when x=0   y=4

y =4

y=5  is the max so the answer is C

Answer:

60,000 i believe :)

Answer:

(x - 6)(x + 3)

Step-by-step explanation:

Consider the product of the factors of the constant term which sum to give the coefficient of the x-term

product = - 18 and sum = - 3

The factors are - 6 and + 3, hence

x² - 3x - 18 = (x - 6)(x + 3)

Answer:

I) B = 20 m², h = 4 m are NOT possible dimensions for the area of the base and the height of the prism.

Step-by-step explanation:

Given that the triangular prism has a volume = 240 m³, we can use the formula for the volume of a triangular prism to check the given answers for possible dimensions.  V = Bh, where B = the area of the base and h = height of the prism.  In this case, we simply need to multiply each of the given dimensions together to see if they equal 240 m³:

F) B = 48 m², h = 5 m:  v = 48 x 5 = 240 m³ (possible)

G) B = 24 m², h = 10 m; v = 24 x 10 = 240 m³ (possible)

H) B = 12 m², h = 20 m: v = 12 x 24 = 240 m³ (possible)

I) B = 20 m², h = 4 m: v = 20 x 4 = 80 m³ (NOT possible)

Step-by-step explanation:

First, set the x value to be 0:

2(0) + 4y = 28

4y = 28

y = 28/4 = 7

So when x = 0, y = 28/4

Now set the y value as 0:

2x + 4(0) = 28

2x = 28

x = 14

So when x = 14, y = 0

Simply plot these two values:

(0, 7) and (14 , 0)

And join them up, an attatched image shows this graph.

Answer:

y = -1/2 + 7

Step-by-step explanation:

You have to isolate y so...

2x + 4y = 28 is the original problem. Then subtract 2x on both sides. After you subtract 2x, you have to divide 4 to both sides. Then after you divide 4 to both sides, it'll be y = -2/4 + 7. After that, simplify -2/4, and you'll get y = -1/2 + 7 as your answer.

Answer:

120

Step-by-step explanation:

Answer:

{1}

Step-by-step explanation:

We find determinant for the given matrix and set it equal to -1

To find determinant we apply formula

[tex]|A| = a_{11}(a_{22}a_{33} − a_{32}a_{23}) - a_{12}(a_{21}a_{33} − a_{31}a_{23})+a_{13}(a_{21}a_{32} - a_{31}a_{22})[/tex]

[tex]|A| = x(1x - 2) - 0(7-7) + 0(14-7x) [/tex]

|A| = x^2 - 2x

Now we set the determinant = -1

[tex]x^2 - 2x=-1[/tex]

Add 1 on both sides

[tex]x^2 - 2x + 1=0[/tex]

Now factor it

(x-1)(x-1) = 0

Set each factor =0  and solve for x

x- 1=0 so x=1

Answer:

y = 2x^2 + 8x + 8

Step-by-step explanation:

The graph touches the x axis at only one point.

so there is only one real solution.

If there is only one real solution then determinant =0

Now we find out the equation that has determinant 0

Determinant is [tex]b^2 - 4ac[/tex]

Let find b^2 - 4ac for each equation

(a) [tex]y = 9x^2 + 6x + 4[/tex]

a= 9 , b = 6 and c=4

[tex]b^2-4ac= 6^2 - 4(9)(4) = -108[/tex]

determinant not equal to 0

(b) [tex]y = 6x^2 – 12x – 6[/tex]

a= 6 , b = -12 and c=-6

[tex]b^2-4ac= (-12)^2 - 4(6)(-6) = 288[/tex]

determinant not equal to 0

(c) [tex]y = 3x^2 + 7x + 5[/tex]

a= 3 , b = 7 and c=5

[tex]b^2-4ac= (7)^2 - 4(3)(5) = -11[/tex]

determinant not equal to 0

(d) [tex]y = 2x^2 + 8x + 8[/tex]

a= 2 , b = 8 and c=8

[tex]b^2-4ac= (8)^2 - 4(2)(8) = 0[/tex]

determinant equal to 0. So there is only one real solution.

Answer:

It's D. on EtDtGtE

Step-by-step explanation:

Answer:

2 decimal places

Step-by-step explanation:

When you multiply two decimals, the largest possible number of decimal places in the product is the sum of the number of the decimal places of the factors. Here, the product has 2 decimal places. One factor is an integer, so it has no decimal places. The other factor must have at least 2 decimal places.

Answer:

m<1=134

m<2=46

x=13

Step-by-step explanation:

Angle 2 can be set equal to 180 since the angle is supplementary after transferring angle 2 to its alternate interior.

4x-6+10x+4=180

Combine like terms

14x-2=180

Solve for x

14x=182

x=13

Now plug x in for the two angles

10(13)+4

130+4

m<1=134

4(13)-6

52-6

m<2=46

134+46=180, verified

Answer:

length =25 and width =4

Step-by-step explanation:

If the area of a rectangle is 100, then the length is 25 and the width is 4. The counterexample is length = 20, width = 5.

If the area of a rectangle is 100, and the length is 25, we can find the width by dividing the area by the length: 100 ÷ 25 = 4. So the width is 4. To find the counterexample, we need to find another pair of length and width that give a different area.

Let's try length = 20 and width = 5. The area of this rectangle would be 20 × 5 = 100, which is the same as the original rectangle.

https://brainly.com/question/31566854

#SPJ2

The values of x and y for the Isosceles triangle are 90° and 43° respect.

By observation, the triangle ∆ABC is an Isosceles triangle with the markings on both legs of the triangle so the base angles are equal,

angle C = angle B = 47°.

Since the line AD bisects the angle A, then line AD is perpendicular to the base BC and so angle x is a right angle

x = 90°

Considering the right triangle ∆ADB can evaluate for y as follows;

x + y + angle B = 180° {sum of interior angles of a triangle}

y + 90 + 47 = 180

y + 137 = 180

y = 180 - 137

y = 43°.

Therefore, the values of the x is equal to 90° and that of y is 43° for the Isosceles triangle ∆ABC.

Answer:

-18  

Step-by-step explanation:

f(x) = x² - 3x -10

f(-10) = (-10)² – 3(-10) – 10

f(-10) = 100 + 30 - 10

f(-10) = 120

f(-5) = (-5)² – 3(-5) – 10

f(-5) = 25 + 15 - 10

f(-5) = 30

=====

The average rate of change is the slope m of the straight line joining the two points.

m = (y₂ - y₁)/(x₂ - x₁)

m = (30 - 120)/(-5 – (-10))

m = -90/(-5+10)

m = -90/5

m = -18

Answer:

The length of each side is 12.2 ft

Answer:

15

Step-by-step explanation:

you have to divide 975/65=$15 per person

Equation: 300+35x=1700; where x represents the amount of teams participating in the tournament

Answer: 40 teams competed in the lacrosse tournament

How to solve-

300+35x=1700

300-300+35x=1700-300

35x=1400

35/35x=1400/35

x=40

[tex]\log_ab=c\iff a^c=b\\\\4^{x+2}=\dfrac{1}{2}\qquad\text{use}\ a^{-1}=\dfrac{1}{a}\\\\(2^2)^{x+2}=2^{-1}\qquad\text{use}\ (a^n)^m=a^{nm}\\\\2^{2(x+2)}=2^{-1}\iff2(x+2)=-1\qquad\text{use distributive property}\\\\(2)(x)+(2)(2)=-1\\\\2x+4=-1\qquad\text{subtract 4 from both sides}\\\\2x=-3\qquad\text{divide both sides by 2}\\\\\boxed{x=-1.5}[/tex]

Answer:

200

Step-by-step explanation:

8x2=16

12 1/2x16=200

To estimate the length of each rope, the division sentence 30 ÷ 3 = 10 can be used, suggesting that each jump rope would be approximately 10 feet long using compatible numbers.

The student's question involves dividing a rope into equal lengths to create jump ropes.

To estimate the length of each jump rope using compatible numbers for the division sentence, we can round 29.8 feet to a number that is easier to divide by 3, such as 30 feet.

Therefore, the division sentence would be 30 ÷ 3 = 10. So, each jump rope would be approximately 10 feet long.

This is an estimate that allows us to perform calculations quickly in our head or on paper, and it is very close to the exact answer.

Final answer:

To estimate the length of each rope from a total length of 29.8 feet when the rope is divided into 3 parts, compatible numbers are used, rounding 29.8 to 30, and the division sentence is 30 ÷ 3, resulting in each estimated rope being about 10 feet long.

Explanation:

To estimate the length of each rope when a 29.8-foot long rope is cut into 3 equal parts, we could use compatible numbers for easier division in our head. Compatible numbers are numbers that are close to the actual numbers and make it easy to do mental arithmetic. We could round 29.8 feet to 30 feet because 30 is divisible by 3. Here's the division sentence using compatible numbers:

30 feet ÷ 3 = 10 feet

Thus, each rope would be approximately 10 feet long. This process is similar to converting units where the scale factor may be omitted at the end when it is 1, as in converting 3.55 m to 355 cm.

Answer:

none of the solutions

Step-by-step explanation:

if k(x) = 2x-3x

We can substitute x=9 to find k(9)

k(9) = 2(9) -3(9)

      = 18 -27

      = -9

Answer:

The equation of this line would be y = 3x - 1

Step-by-step explanation:

In order to find this equation we must first find the slope of the original line. The original slope (the coefficient of x) is 3, which means the new slope will also be 3 because parallel lines have the same slope. Now, we can use this slope along with the point in point-slope form to find the equation of the line.

y - y1 = m(x - x1)

y + 7 = 3(x + 2)

y + 7 = 3x + 6

y = 3x - 1

Answer:

Step-by-step explanation: Thew figures are similar becasue 5/15 equals 3/9. They bothe equal one third. This shows that they are bhoth orportionate to eachoither. The ratios of the lengths of their corresponding sides are equal.