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Nesterboy [21]
3 years ago
5

Helpppppppppp plz for brainliest

Mathematics
2 answers:
Nostrana [21]3 years ago
6 0

Answer:

1)-33/19

2)8/9

3)-43/8

4)1/17

5)-5

Step-by-step explanation:

Plug in the values of (x1 and x2) and (y1 and y2)

Your welcome for doing your homework :)

Vladimir [108]3 years ago
6 0

Answer:

\frac{y2 - y1}{x2 - x1}  \\  \\ 1) \frac{ - 13 - 20}{3 - ( - 16) } \\  \frac{ - 33}{3 + 16}  \\  =  \frac{ - 33}{19}

2) \frac{31 - 23}{27 - 18}  \\  =  \frac{8}{9}

3)\frac{ - 25 - 18}{20 - 12}  \\  =  \frac{ - 43}{8}

4) \frac{21 - 18}{25 - 26}  \\ \frac{3}{ - 1}   \\  =  - 3

5)\frac{11 - 16}{15 - 14}  \\  \frac{ - 5}{1}  \\  =- 5

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In a class of 30 students, 12 are girls. What percent of the class is girls
dexar [7]

Answer:

40%

Step-by-step explanation:

Total students = 30

No. of girls. = 12

Girls % = ?

Girls % = No. of girls/Total students * 100%

= 0.4 * 100

= 40%

5 0
3 years ago
Three partners, Luc, Deborah and Melanie, share the profits of a bussiness in the ratio 2:3:7 respectively. The profit for this
valentina_108 [34]
Add all parts shared 2+3+7=12

Therefore 1 part is 176,496÷12= $14,708.

This means:
Luc has 2 parts: $14,708×2=$29,416
Deborah has 3 parts: $14,708×3=$44,124
Melanie has 7 parts: $14,708×7=$102,956

To check add all values together. If it makes the total amount, then the share is correct. 29,416+44,124+102,956=$176,496
8 0
3 years ago
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314,207 in standard form expanded form and word form
Gennadij [26K]
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Hope it helps!!
8 0
3 years ago
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What is the equation of the axis of symmetry for the function shown below?
Gennadij [26K]

Answer:

x=2

Step-by-step explanation:

The axis of symmetry can be calculated using the following formula:

Xv= \frac{-b}{2a}

In order to use this formula, we need to have the function written in it's polynomial formula:

f(x)=ax^{2} +bx+c

In order to do so, we have to isolate Y from the excercise's formula.

y=-2(x-2)^2-5

Then we resolve the square of the binomial knowing that (a+b)^2=a^2+2.a.b+b^2

(x-2)^2= x^2+2.x.(-2)+(-2)^2

(x-2)^2= x^2-4x+4

Now we have that:

y=-2.(x^2-4x+4)-5

y=-2x^2+8x-8-5

y=-2x^2+8x-13

As we have now the polynomyal formula, we know that a=-2, b=8 and c=-13. We supplant on the formula and get:

Xv= \frac{-b}{2a}

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Xv= \frac{-8}{-4)}

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4 0
4 years ago
Use the tables below to find (p - 9)(2).
Vesnalui [34]

Answer:

5

Step-by-step explanation:

p(2) - q(2)

3 - (-2)

3 + 2

= 5

8 0
3 years ago
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