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zhenek [66]
3 years ago
8

I need help, does anyone know how to solve this.

Mathematics
1 answer:
IceJOKER [234]3 years ago
6 0

Answer:

80

third

20%

60%

Step-by-step explanation:

since 240 is the third mark and each mark represents 20 and 20 times 3 is 60 then we get 60%

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A rectangular patio has an area of 91 fl. The length is 6 feet
puteri [66]

Answer:

Total area equation = tex]w(w+6)=91[/tex]

b/2 = 3

Dimensions of the patio: width = 7 feet, length = 13 feet

Step-by-step explanation:

The area of a rectangle is given the formula:

A=wl

where

w is the width

l is the length

We know from our problem that the area of the patio is 91 square feet, so A=91. We also know that the length is 6 feet longer then the width, so l=w+6.

Replacing values in our area equation

A=wl

91=w(w+6)

w(w+6)=91

Expanding the left side:

w*w+6w=91

w^2+6w=91

Remember that to complete the square we need to add half the coefficient of the linear term squared. The lineal term is w, so its coefficient is 6. Now, half its coefficient or \frac{b}{2} =\frac{6}{2} =3. Finally, 3^2=9.

To complete the square we need to add 9 to both sides of the equation:

w^2+6w+9=91+9

w^2+6w+9=100

Notice that the left side is a perfect square trinomial (both w^2 and 9 are perfect squares), so we can express it as:

(w+3)^2=100

Now that we completed the square, we can solve our equation

- Take square root to both sides

\sqrt{(w+3)^2} =\pm\sqrt{100}

w+3=\pm10

- Subtract 3 from both results

w=10-3,w=-10-3

w=7,w=13

Since length cannot be negative, w=7 is the solution of our equation.

We now know that the width of our rectangular patio is 7 feet, so we can find its length:

l=w+6

l=7+6

l=13

We can conclude that half the coefficient of the width is \frac{b}{2}=3, the width of the patio is 7 feet, and its length is 13 feet.

7 0
3 years ago
30% of __=3<br><br> Please I need this Asap
Natalija [7]

Answer:

<h2>30% of 10 is 3</h2>

Step-by-step explanation:

We have 30% of x= 3

you want to multiply both sides by 30

which will get you to 3

4 0
3 years ago
Read 2 more answers
Lines m m and n n are parallel. They are cut by transversal t t . What other angle is equal to 65 65 degrees?
natka813 [3]

angle 2 is also 65º because they are corresponding angles. Using the vertical angles theorem, you can also say that angles 3 and 7 are 65º. so the answer to your question would be angle 3

5 0
4 years ago
Read 2 more answers
Given 3p+2q=3 and 6p+8q=2 solve for q and p simultaneously
ASHA 777 [7]

Answer:

Slope = -5.000/2.000 = -2.500

 p-intercept = 2/15 = 0.13333

 q-intercept = 2/6 = 1/3 = 0.33333

Step-by-step explanation:

Step  1  :

Pulling out like terms :

1.1     Pull out like factors :

  -15p - 6q + 2  =   -1 • (15p + 6q - 2)

Equation at the end of step  1  :

Step  2  :

Equation of a Straight Line

2.1     Solve   -15p-6q+2  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axi

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  -15p-6q+2  = 0 and calculate its properties

Graph of a Straight Line :

Calculate the Y-Intercept :

Notice that when p = 0 the value of q is 1/3 so this line "cuts" the q axis at q= 0.33333

 q-intercept = 2/6 = 1/3  =  0.33333

Calculate the X-Intercept :

When q = 0 the value of p is 2/15 Our line therefore "cuts" the p axis at p= 0.13333

 p-intercept = 2/15  =  0.13333

Calculate the Slope :

Slope is defined as the change in q divided by the change in p. We note that for p=0, the value of q is 0.333 and for p=2.000, the value of q is -4.667. So, for a change of 2.000 in p (The change in p is sometimes referred to as "RUN") we get a change of -4.667 - 0.333 = -5.000 in q. (The change in q is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     = -5.000/2.000 = -2.500

Geometric figure: Straight Line

 Slope = -5.000/2.000 = -2.500

 p-intercept = 2/15 = 0.13333

 q-intercept = 2/6 = 1/3 = 0.33333

Processing ends successfully

plz mark me as brainliest :)

3 0
3 years ago
A convenience sample is frequently randomly chosen.<br> O A. True<br> B. False
skad [1K]
B for me and A for my friend
6 0
3 years ago
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