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3 years ago

Plz plz help it’s due at 12 Btw only number 12

Mathematics

1 answer:

Marta_Voda [28]3 years ago

4 0

Answer:

12.

Step-by-step explanation:

I'm sorry. I really don't know what you mean. I just wrote 12 because you want only the number twelve?

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Which ordered pairs are solutions to the inequality y−3x<−4?

mars1129 [50]

Answer:

(4,-2)

Step-by-step explanation:

y - 3x < - 4

-2-3(4) < -4

-2-12 <-4

-14 < - 4

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4 years ago

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Construct:AB equals to 5cm,A equals to 90 degree and draw the angle bisectors from A.

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Step-by-step explanation:

this is your answer. make sure that you construct a scale diagram.

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3 years ago

WILL MARK BRAINLIEST !!! NEED HELP

Flura [38]

Answer:

$y = -\frac{1}{3}x-2$

Step-by-step explanation:

From the table it is clear that the line is passing through the points $(0,\: -2)= (x_1, \:y_1) \: \&\: (-6, \:0)=(x_2,\:y_2)$

(There are many other points in the table and any two of them can chosen as per our convenience)

Equation of line in two point form is given as:

$\frac{y-y_1}{y_1 - y_2} = \frac {x-x_1}{x_1 - x_2} \\\\\therefore \frac{y-(-2)}{-2 - 0} = \frac {x-0}{0 - (-6)} \\\\\therefore \frac{y+2}{-2} = \frac {x}{0+6)} \\\\\therefore \frac{y+2}{-2} = \frac {x}{6)} \\\\\therefore 6(y + 2) = - 2(x)\\\therefore 6y + 12 = - 2x \\\therefore 6y = - 2x - 12\\\\\therefore y = -\frac{2}{6}x-\frac{12}{6}\\\\\huge \red {\boxed {y = -\frac{1}{3}x-2}} \\\\$

3 0

4 years ago

A family has two cars. During one particular week, the first car consumed 20 gallons of gas and the second consumed 15 gallons o

OleMash [197]

Answer: the fuel efficiency of the first car is 20 miles per gallon.

the fuel efficiency of the second car is 15 miles per gallon.

Step-by-step explanation:

Let x represent the number of miles per gallon of the first car.

Let y represent the number of miles per gallon of the second car.

During one particular week, the first car consumed 20 gallons of gas and the second consumed 15 gallons of gas. The two cars drove a combined total of 625 miles. It means that

20x + 15y = 625- - - - - - - - - - 1

The sum of their fuel efficiencies was 35 miles per gallon. It means that

x + y = 35

Substituting x = 35 - y into equation 1, it becomes

20(35 - y) + 15y = 625

700 - 20y + 15y = 625

- 20y + 15y = 625 - 700

- 5y = - 75

y = - 75/ - 5

y = 15

x = 35 - y = 35 - 15

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3 years ago

What is the axis of symmetry of the function f(x)=−(x+9)(x−21)?

Elena L [17]

Answer:

Therefore the given equation is a parabolic equation with vertex at (6,255) and the axis of symmetry is given by x = 6.

Step-by-step explanation:

i) f(x) = -(x+9)(x-21)

ii) therefore y = f(x) = - $x^{2}$ + 12x + 189 = - ( $x^{2}$ - 12x +36) + 36 + 189

iii) therefore y = f(x) = - $(x-6)^{2}$ + 225

iv) when x = 6 then y = 255

Therefore the given equation is a parabolic equation with vertex at (6,255) and the axis of symmetry is given by x = 6.

7 0

4 years ago

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