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katen-ka-za [31]
3 years ago
15

Need help on 8 and 9 please!!

Mathematics
1 answer:
Georgia [21]3 years ago
3 0

Answer:

for question no. 8 there is a formula in coordinate geometry which i don't remembered .

but can help in solving question no. 9

<u>solution</u><u> </u><u>for</u><u> </u><u>9</u>

it is given that values varies directly that means

<u> </u><u>X1</u> = <u>X2</u><u> </u>

Y1 Y2 we have to find Y2

i.e. 9/5.4= -10/Y2

or Y2 × 9 = 5.4 × -10

Y2 = -54/9

Y2 = -5

Step-by-step explanation:

<em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>helped</u></em><em><u> </u></em><em><u>u</u></em><em><u> </u></em><em><u>buddy</u></em><em><u> </u></em><em><u>;</u></em><em><u> </u></em><em><u>)</u></em>

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Coffee is a leading export from several developing countries. When coffee prices are high, farmers often clear forest to plant m
Marianna [84]

Answer:

The plot shows a positive linear association. Price is the explanatory variable.

*See attachment for the scatterplot of the data

Step-by-step explanation:

The rate of deforestation is dependent on the price of coffee. Therefore, the explanatory variable is the price of coffee, which affects rate of deforestation.

The response variable is the rate of deforestation. The rate of deforestation is influenced by the price of coffee.

When plotting a scatter plot, the values for the explanatory variable are plotted on the x-axis, while the response variables are plotted on the y-axis.

The data given below is what we would use in plotting the scatterplot shown in the attachment:

Explanatory variable, X, (Price, cents per pound) => Response variable, Y, (deforestation, %)

25 => 0.31

49 = > 1.69

60 => 1.66

55 => 1.7

68 => 3.31

The scatterplot graphed as shown in the attachment shows a positive linear relationship between price of coffee and rate of deforestation. As price increases, rate of deforestation also increases.

5 0
3 years ago
How is 0,2 an answer?
11Alexandr11 [23.1K]

Answer:

it is an answer if you are using a coordinate plane

Step-by-step explanation:

6 0
3 years ago
1.) In a department store, a $120 belt is marked 25% off.
lawyer [7]

Answer:

$30

$90

Step-by-step explanation:

Given parameters:

    Selling price of belt = $120

     Percentage discount = 25%

Unknown:

Discount = ?

Sale price of the dress  = ?

Solution:

Discount is a reduction in the price of a commodity.

     Discount  = percentage discount x selling price of belt

 Input the parameters and solve;

I.    Discount  = \frac{25}{100} x 120 = $30

 

II. Sale price of the dress;

               = selling price - discount amount

                 = $120 - $30

                  = $90

3 0
3 years ago
Please help me with this !
baherus [9]

M-N is M-N=2x^2+11x-9

Option B is correct.

Step-by-step explanation:

If M=5x^2+7x-4 and N=3x^2-4x+5 then find M-N

We need to subtract N from M

We will combine like terms (terms having same variable and exponent) and then solve them:

M=5x^2+7x-4

N=3x^2-4x+5

M-N=5x^2+7x-4-(3x^2-4x+5)\\M-N=5x^2+7x-4-3x^2+4x-5\\Combining\,\,like\,\,terms:\\M-N=5x^2-3x^2+7x+4x-4-5\\M-N=2x^2+11x-9

So, M-N is M-N=2x^2+11x-9

Option B is correct.

Keywords: Solving Polynomials

Learn more about Solving Polynomials at:

  • brainly.com/question/11207748
  • brainly.com/question/1332667
  • brainly.com/question/1357167

#learnwithBrainly

6 0
4 years ago
Solve for x 2|x-6|+14=38
ale4655 [162]

Answer:

x=18   x=-6

Step-by-step explanation:

2|x-6|+14=38

The first step is to isolate the absolute value

Subtract 14 from each side

2|x-6|+14-14=38-14

2|x-6|=24

Divide by 2 on each side

2/2|x-6|=24/2

|x-6| = 12

Now we can seperate the absolute value into two parts, the positive and the negative

x-6 =12          x-6 = -12

Add 6 to each side

x-6+6 =12+6     x-6+6 = -12+6

x=18                    x= -6

4 0
4 years ago
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