Please do 69 and 70 quick please

Answer:

  1 2/3

Step-by-step explanation:

Assuming you mean the perimeter is 4 2/15, the sum of the lengths of the two equal sides is ...

  4 2/15 - 4/5 = 4 2/15 - 12/15 = 4 -10/15

Then either of the remaining sides is half this value, or ...

  (4 -10/15)/2 = (4/2) -(1/2)(10/15) = 2 -5/15 = 1 10/15 = 1 2/3

Each of the remaining sides has length 1 2/3.

Answer:

[tex]w=8cm\\h=18.75cm[/tex]

Step-by-step explanation:

Let:

[tex]w=Width\\h=Initial\hspace{3}height\\h_m=Modified\hspace{3}height\\\\Where:\\\\h_m=h-3[/tex]

The area of the cardboard can be calculated using the formula to find the area of a rectangle:

[tex]A=w*h[/tex]

The area of the new cardboard would be:

[tex]A=w*h_m\\\\Where:\\\\w=8\\h_m=h-3\\A=126[/tex]

So:

[tex]126=8*(h-3)\\\\126=8h-24[/tex]

Solving for h:

[tex]126+24=8h\\\\150=8h\\\\h=\frac{150}{8} =\frac{75}{4} =18.75cm[/tex]

Therefore, the dimensions of the initial cardboard are:

[tex]w=8cm\\h=18.75cm[/tex]

Translation:

Sea:

[tex]w=Ancho\\h=Altura\hspace{3}inicial\\h_m=Altura\hspace{3}modificada\\\\Donde:\\\\h_m=h-3[/tex]

El área de la cartulina se puede calcular usando la fórmula para encontrar el área de un rectángulo:

[tex]A=w*h[/tex]

El área de la nueva cartulina sería:

[tex]A=w*h_m\\\\Donde:\\\\w=8\\h_m=h-3\\A=126[/tex]

Entonces:

[tex]126=8*(h-3)\\\\126=8h-24[/tex]

Resolviendo para h:

[tex]126+24=8h\\\\150=8h\\\\h=\frac{150}{8} =\frac{75}{4} =18.75cm[/tex]

Por lo tanto, las dimensiones de la cartulina inicial son:

[tex]w=8cm\\h=18.75cm[/tex]

Answer: 48 minutes

Step-by-step explanation:

If there are 7 people painting 7 walls, we can assume that 1 person is painting 1 wall. Altogether they can each paint in 48 minutes.

If there are 20 people painting 20 walls, it would also equal 48 minutes because each person can paint in that time.

Answer:

137 minutes.

2 hrs and 17 minutes

Step-by-step explanation:

The painting of each wall takes 6.85 minutes.

48 / 7 = 6.85.

therefore if there are 20 walls, it must take 20 people 2 hrs and 17 mins

20 x 6.85 = 137minutes.

Answer:

The confidence interval that is likely to contain the percent of all students nationwide who are only children is (0.1505,0.2554)

Step-by-step explanation:

Total number of students = n = 226

We are given that 20% reported being "only" children (no siblings).

Number of students being "only" children (no siblings) [tex]= 20\% \times 226=\frac{20}{100} \times 226=45.6\sim46[/tex]

So, x = 46

[tex]p=\frac{x}{n}=\frac{46}{226}=0.203[/tex]

Z at 95% is 1.96

Formula for confidence interval for sample proportion :

[tex]CI=p \pm Z \times \sqrt{\frac{p(1-p)}{n}}[/tex]

Substitute the values in the formula :

[tex]CI=0.203 \pm 1.96 \times \sqrt{\frac{0.203(1-0.203)}{226}}\\CI=(0.1505,0.2554)[/tex]

Hence  the confidence interval that is likely to contain the percent of all students nationwide who are only children is (0.1505,0.2554)

Answer:

The correct answer would be -1

Step-by-step explanation:

Answer:

-1 I believe

Step-by-step explanation:

Answer:

A = 9pi

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

We know the diameter

r = d/2 = 6/2 = 3

A = pi (3)^2

A = 9pi

Answer:

[tex]28.26 \: \: {units}^{2} [/tex]

Step-by-step explanation:

[tex]area \\ = \pi {r}^{2} \\ = 3.14 \times 3 \times 3 \\ = 28.26 \: \: {units}^{2} [/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

B

Step-by-step explanation:

This is proportional because the number of calories burned is directly proportional to the amount of time spent on the treadmill

Answer:

graph one

Step-by-step explanation:

Let

x ----> the number of visit per month

y ----> the total cost

we know that

Observing the table

1) For the interval of x equal to ----> [0,12]  (close circle both points)

The domain is all whole numbers greater than or equal to 0 visits and less than or equal to 12 visits

The value of y is

y=5x+15

For x=0 ----> y=$15

For x=12 ----> y=5(12)+15=$75

The range is the interval ----> [15,75] (close circle both points)

All real numbers greater than or equal to $15 and less than or equal to $75

2) For the interval of x equal to ---->(12,16] (open circle at left and close circle at right)

The domain is all whole numbers greater than 12 visits and less than or equal to 16 visits

The value of y is

y=4x+32

For x=12 ----> y=4(12)+32=$80

For x=16 ----> y=4(16)+32=$96

The range is the interval ----> (80,96] (open circle at left and close circle at right)

All real numbers greater than $80 and less than or equal to $96      

3) For the interval of x equal to ---->(16,24] (open circle at left and close circle at right)

The domain is all whole numbers greater than 16 visits and less than or equal to 24 visits

The value of y is

y=3x+42

For x=16 ----> y=3(16)+42=$90

For x=24 ----> y=3(24)+42=$114

The range is the interval ----> (90,114] (open circle at left and close circle at right)

All real numbers greater than $90 and less than or equal to $114    

please mark me brainliest!

The graph that represents the total monthly cost at the gym as a function of the number of visits in a month is shown by option A)

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

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

Given data ,

Based on the number of visits each month, a gym provides three different levels of membership.

Let the monthly visits be 'a' and the overall expense be 'b'. The following will be the appropriate graph showing the total monthly cost of the gym as a function of monthly visits:

A) For the interval of a = [0,12]

The value of b is given by:

b = 5a + 15

when a = 0 in the above equation.

b = $15

when a = 12 in the above equation.

b = 60 + 15

b = $75

The interval of b = [15,75]

B)

For the interval of a = [12,16]

The value of b is given by:

b = 4a + 32

when a = 12 in the above equation.

b = 48 + 32

b = $80

when a = 16 in the above equation.

b = 64 + 32

b = $96

The interval of b = [80,96]

C)

For the interval of a = [16,24]

The value of b is given by:

b = 3a + 42

when a = 16 , we get

b = 48 + 42

b = $90

when a = 24 in the above equation , we get

b = 72 + 42

b = $114

The interval of b = [90,114]

Hence , the graph is represented by graph A

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It took him 20 minutes to get home going 6 mph.

The expression that indicates the amount of water, in gallons, in the swimming pool after m minutes is 1600 + 25m.

Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both.

In this case, there are already 1,600 gallons of water in a swimming pool and water is filling the pool at a rate of 25 gallons per minute.

Let m = number of minutes

The expression will be:

1600 + (25 × m)

1600 + 25m

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The value of x from the expression is,

⇒ x = 1/4 (Y - 3)

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The equation is,

⇒ Y = 4x + 3

Now, We can solve the expression for the value of x as;

⇒ Y = 4x + 3

Subtract 3, we get;

⇒ Y - 3 = 4x + 3 - 3

⇒ Y - 3 = 4x

Divide by 4;

⇒ (Y - 3) / 4= 4x/4

⇒ (Y - 3)/4 = x

⇒ x = 1/4 (Y - 3)

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Answer:

I think option 3 but not sure

Step-by-step explanation:

Theoretical probability is what we expect to happen, where experimental probability is what actually happens when we try it out. The probability is still calculated the same way, using the number of possible ways an outcome can occur divided by the total number of outcomes.

Answer:

$4.05

Step-by-step explanation:

We must divide 4 by 8. We get 0.5. 0.5 stands for $0.5. Then we add 0.5 to 4, which equals $4.05.

Hope this helped :)

Answer:

y-4=100 and 100=y-5

Step-by-step explanation:

Because the addition property of equality is: The property stating that adding the same number to both sides of an equation does not change the equation.

Equations are used to represent equal expressions

The equivalent equation of y + 4 = 100 is 4 + y = 100

The equation is given as:

y + 4 = 100

Rewrite the equation as follows:

4 + y = 100

Hence, the equivalent equation of y + 4 = 100 is 4 + y = 100

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Answer:

The perimeter is 10

Answer:

10 inches

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

3 yards in a ft, so 15 yards in 5 ft.

Answer:

15 feet.

Step-by-step explanation:

1 yard = 3 feet

5 yards = x feet

[tex]x=5 \times 3[/tex]

[tex]x=15[/tex]

Answer:

520

Step-by-step explanation:multiply 650 by 80 amd then divide by 100

or simply multiply 650 by 0.8

520 number of students will attend the field trip.

percentage, a relative value indicating hundredth parts of any quantity.

Given that there are 650 students at westMoreland junior high.

80% of the students will attend the field trip.

We need to find the students will attend the field trip.

We need to find what is 80% of the 650.

firstly let us convert 80% to decimal by dividing 80 with 100.

80/100=0.8

Now multiply 0.8 with 650

0.8×650

Zero point eight × Six hundred fifty.

520

Hence, 520 number of students will attend the field trip.

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Answer:

4/9 cup of sugar

Step-by-step explanation:

[tex]\frac{1}{3} cup of sugar= \frac{3}{4} cup of flour[/tex]

[tex]? cup of sugar=1 cup of flour[/tex]

so crisscross them and finally you'll get

1/3*4/3=4/9

For 1 cup of flour, 4/9 cups of sugar is needed.

Ratio is a quantitative relation between two amounts showing the number of times one value contains or is contained within the other. A statement expressing the equality of two ratios A:B and C:D is called a proportion. We can express proportion as -

A : B ∷ C : D

AND

A x D = B x C

Product of extremes equal to product of means.

Given is a recipe that requires 1/3 cup of sugar for every 3/4 cup of flour.

Now -

For 1/3 cup of sugar = 3/4 cup of flour is needed.

For 1 cup of flour = (1/3)/(3/4) cups of sugar = 1/3 x 4/3 = 4/9 cups of sugar is needed.

Therefore, for 1 cup of flour, 4/9 cups of sugar is needed.

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Answer:

No it isnt

12 divided by 6 is 2, that means 14 need to be divided by 6 as well. but 14 divided by 6 is not 3

Answer:

No

Step-by-step explanation:

3 is not a multiple of 14 so you see not.

Answer:

p = 44cm

perimeter of a square = 4l

44/4 = 11

area = l²

area = 11²

area = 121cm²

Step-by-step explanation:

Answer:

t=16.2 years

Step-by-step explanation:

A=p(1+r/n)^nt

A=$20100

P=$6500

r=7%=0.07

n=4

t=?

t=ln(A/P)/n {ln(1+r/n)}

=ln(20100/6500) / 4{ln(1+0.07/4)}

=ln(3.0923)/4{ln(1+0.0175)}

=ln(3.0923)/4{ln(1.0175)}

=1.1289/4(0.0174)

=1.1289/0.0696

=16.23

To the nearest tenth

t=16.2 years

Answer:

You haven't linked any tables?

Step-by-step explanation:

Answer:

yuuurrrppp

Step-by-step explanation:

Answer:

[tex]19/20[/tex]

Step-by-step explanation:

[tex]3/4+1/5[/tex]

[tex]15/20 + 4/20[/tex]

[tex]19/20[/tex]

Answer:

[tex] = \frac{19}{20} [/tex]

Step-by-step explanation:

[tex] \frac{3}{4} + \frac{1}{5} \\ \frac{15 + 4}{20} \\ = \frac{19}{20} [/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

A

Step-by-step explanation:

B would be just a number, but for A you need to connect data points and actually do some statistics.

(would really, reallly appreciate the brainliest)

Answer:

A - how many points per game did your team score?

Answer:

Option (2)

Step-by-step explanation:

Given question is incomplete; here is the complete question.

Point A is the midpoint of side XZ and point B is the  midpoint of side YZ.

Triangle XYZ is cut by line segment AB. Point A is the midpoint of side XZ and point B is the midpoint of side YZ. The length of XY is (5x - 7), the length of AB is (x + 1), and the lengths of XA and ZA are (2x - 2). The lengths of YB and BZ are congruent.

What is AX ?

2 units

4 units

6 units

8 units

From the figure attached,

XYZ is a triangle having A and B as the midpoints of the sides XZ and YZ.

By the theorem of midpoints,

AB = [tex]\frac{1}{2}\text{(XY)}[/tex]

Since AB = (x + 1) and XY = (5x - 7)

(x + 1) = [tex]\frac{1}{2}(5x-7)[/tex]

2x + 2 = 5x - 7

5x - 2x = 2 + 7

3x = 9

x = 3

Therefore, side AB = 3 + 1 = 4 units

Side XY = (5x - 7)

             = 15 - 7

             = 8 units

Side XA = 2(x - 1)

              = 4 units

Therefore, Option (2) will be the answer.

the answer is (A) is arithmetic

Answer:

A. ( x + 2y = ( y - 3 ) = 7

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