last question!! please help 40 points:) (sorry if the picture is a little blurry)

Answer:

15.13

Step-by-step explanation:

To find diameter, divide circumference by pi or 3.14

I'm going to change the fraction to a decimal, so 47.5

47.5/3.14 = 15.1273885

Round to nearest hundredth gives you 15.13

Answer:

I need to know this, too.

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

You can conclude this for the picture

Answer:

The area of a circle with radius 19.5 is 1195

Answer:

1194.59

Step-by-step explanation:

A=πr2=π·19.52≈1194.59061

9514 1404 393

Answer:

  A)  16

Step-by-step explanation:

The ratio of long-side to short-side is the same for all of these similar triangles, so we have ...

  e/8 = 8/4

  e = 8(8/4) = 8(2) = 16

The value of e is 16.

Answer:

2s-12=j

S+J=127

Step-by-step explanation:

ok so firstly you are going to have 2 problems. Jacob has 12 fewer than 2x Sadie's so it will look like this, 2s-12=j

. 2x Sadie's minus 12 will give you Jacobs. and then it tells you that together they have 127 completed so S+J=127

hope this helps!!

Answer:

3 gallons

Step-by-step explanation:

Each wall 12 x 20 = 240 feet squared

4 walls =  4 x 240 = 960 squared feet

960 divided into 320 = 3

1 gallon --------320

1 gallon------------320

1 gallon-----------320

                    3 gallons----------960

Answer:

here is the answer

Step-by-step explanation:

the first one the slope is 2

the second one the slope is -3

the slope is always the one with the x and the second one without the x is the y axis

Answer:

1. x^2 + 3x - 4 =0

x^2 + 3x = 4

x + 3x = √4

4x = 2

x =2/4

x = 1/4

2. 2x^2 - 4x - 3 = 0

2x^2 - 4x = 3

2x^2 - x = 3/4

2x - x = √3/4

x = √3/4

3.x(x-2) = 4

x^2 - 2x = 4

x - 2x = √4

- x = 2

x = -2

Answer:ggggggggg

Step-by-step explanation:

Answer:

The symbol for absolute value is two vertical lines. Since opposites are the same distance from the origin, they have the same absolute value. For example, the absolute value of "negative 10" is ten, and the absolute value of "positive 10" is also 10.

:))

Answer: x/10

Step-by-step explanation:

the quotient of the opposite of a number and negative ten

Well

The opposite of a number is -x

And negative ten is written as -10

now we need the quotient of -x and -10

If you were asked the quotient of 10 and 2 it would be 10÷2 or 5

So the quotient of -x and -10 would be [tex]\frac{-x}{-10} = \frac{x}{10}[/tex]

Answer:

No, the student is not correct. The correct expression is 9(n+13).

Step-by-step explanation:

"9 times the sum of a number and 13" means you must multiply 9 by the sum, not just by the number. 9n + 13 would be "the sum of 9 times a number and 13." Slightly different wording.

Answer:

Sample Response: The student is not correct. He should use parentheses like this 9(n+13). Without the parentheses, it means nine times n plus 13, but should be the sum of n plus 13 multiplied by 9.

Answer:

Manisha age = 15 years

Step-by-step explanation:

Let

Manisha age = x

Amir = 2/3 of Manisha age

Amir = 10 years

Amir:

2/3 of x = 10

2/3 * x = 10

2/3x = 10

x = 10 ÷ 2/3

= 10 × 3/2

= (10*3)/2

= 30/2

= 15

x = 15 years

Therefore,

Manisha age = 15 years

Answer:

Average grade now = 7.524

Step-by-step explanation:

Given - If the average score of the 20 students is 7.5. Then a student follows the test and gets a grade of 8.

To find - What is your average grade now?

Proof -

Given that,

Average score of 20 students = 7.5

So,

Total value of students = 20 × 7.5 = 150

Now,

Given that, One person added ang his grade is 8

So,

So Total value of 21 students = 150 + 8 = 158

Now,

Average score of 21 students = [tex]\frac{158}{21}[/tex] = 7.5238

∴ we get

Average grade now = 7.524

Answer:

5

Step-by-step explanation:

5=1 x y

y=5

Answer:

radius = 14.5 feet

Step-by-step explanation:

91.06 / 3.14 = diameter = 29

radius = 29/2 = 14.5 feet

Answer:

22cm²

Step-by-step explanation:

For the area of triangle,

base = 2 + 2 + 2 = 6cm

height = 4cm

Area = 1/2 x base x height

= 1/2 x 6 x 4

= 12cm²

For area of the rectangle,

length = 5cm

breadth = 2cm

Area = length x breadth

= 5 x 2

= 10cm²

Area of compound shape = 12 + 10 = 22 cm²

Answer:

33.6f eet

Step-by-step explanation:

if

2=8 then

8.4x8= 67.2/2= 33.6 feet

Answer: in an hour and  working  at the same rate, Lenny will make 250 sandwiches

Step-by-step explanation:

Number of sandwiches made in 12 minutes =50

Number of sandwiches made in 1 hour =   ??

1 Hour =  60 mins

Therefore, Number of sandwiches made in 60 mins =  (60 x 50) /12

=5 x 50 = 250 sandwiches

Answer:

J(-2, -0.5), K(0, 2), L(-2, -1)

Step-by-step explanation:

Answer:

Step-by-step explanation:

so 1 equals one to q 1

Answer:

First number = 75.5

Second number = 45.5

Answer:

x = 3

Step-by-step explanation:

Number of subscriptions he must sell to earn $90 in one week is

An equation is the statement of two expressions located on two sides connected with an equal to sign. The two sides of an equation is usually called as left hand side and right hand side.

Given that,

Fixed amount he earns per week = $15

Additional amount added depending on the number of subscription sold = $3

Let x be the number of subscription sold.

Amount earned in a week = 15 + 3x

If amount earned is $90,

15 + 3x = 90

3x = 75

x = 75 / 3 = 25

Hence the number of subscriptions is 25.

Learn more about Equations here:

https://brainly.com/question/30304855

#SPJ3

Answer:

3.25

hope this helped!!

Answer:

3.25

Step-by-step explanation:

13 / 4 is an improper fraction . when you divide 13 by 4 you get 3.25

Answer:

11'12

Step-by-step explanation:

so peter is 5'6, and his shadow is 3'3, which means that its subtracted by 2'3, therfore the flagpole is 11'12, hope this helps :)

Answer:

Midsegment is 35.

Step-by-step explanation:

TL; DR:

The smaller triangle (with a base of 6x + 5) has side lengths that are twice as small as the entire triangle (the one with a base of 3x+55). So, 2(6x+5) = 3x + 55. x = 5, so the midsegment is 35.

Look at the photo attached below.

Here is the statement/reason:

1. ED ║ AB (Midsegments are parallel to the base)

Note: Then, CA and CB are transversals

2. Then, m∠CED = m∠EAB (corresponding angles)

3. m∠CDE = m∠DBA (corresponding angles)

4. ΔCED is similar to ΔCAB (angle angle)

5. CA = CE + EA

6. CA = 39 + 39 = 78 (Substitution, algebra)

7. ED/AB = CE/CA (similar triangles)

Note: You can also use CD and CB

8. (6x+5) / (3x+55) = 39 / 78 (substitution)

9. (6x + 5) / (3x + 55) = 1 / 2 (algebra)

10. 12x + 10 = 3x + 55, x = 5 (algebra)

11. ED = 6x + 5 (given)

12. ED = 6*5 + 5 = 35 (substitution, algebra)

An explanation of the algebra:

(6x+5) is twice as small as (3x + 55). So, we can write this equation:

2(6x+5) = 3x + 55

12x + 10 = 3x + 55

Subtract 3x from both sides.

9x + 10 = 55

Subtract 10 from both sides.

9x = 45

x = 5.

Now, put that into ED.

6x + 5 = 6 * 5 + 5 = 35

I hope this helps! Feel free to ask any questions!

Answer:

m=3     b=-2       y=3x-2

Step-by-step explanation:

The slope/m is 3 because the rise is 3 and the run is 1. Rise over run and you get 3/1 also known as 3.

The y-intercept point/b is -2 because you can look at the graph and the point where the line touches the y-axis is the y-intercept/b

The equation is written in the format of y=mx+b so y and then m is the slope then add x after the slope, then write the y intercept.

Answer:

1

Step-by-step explanation:

Substitute x with -3 and y with -7

2(-3)-(-7)

Multiply

-6-(-7)

Signs are both negative, turn into positive sign

-6+7

Add

1

Answer:

1

Step-by-step explanation:

x = - 3 and y = - 7

2x-y =?

Now

2*(-3)-(-7)

-6 +7. (sign of negative when multiplied it turns into positive)

1. Answer