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2 years ago

15

At a school number of boys :number of girls11:9 there are 124more boys than girls.work out the total number of students at the s

chool

1 answer:

Pie2 years ago

3 0

The answer is 101.45

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In a complete sentence, describe the positions of these numbers on the number line in relation to each other. Then, write an ine

Tasya [4]

Answer:

ussugdfxysuwneuduchske

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2 years ago

If you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?2

aivan3 [116]

The second equation because they all have a common factor of 3. You can get x by itself. However, with the first one, you'll end up with fractions instead.

8 0

2 years ago

Manuel has pennies and nickels with a total value of $1.15. The number of nickels is 43 less than the number of pennies. How man

Veseljchak [2.6K]

Answer:

45 Pennies

14 Nickels

Step-by-step explanation:

1.15 - .43 = .72

72 % 5 = 14.? - 14 nickels

.2 left - 2 pennies

7 0

2 years ago

The general form of an parabola is 2x2−12x−3y+12=0 .

Murljashka [212]

Answer:

The standard form of the parabola is $(x-3)^2=4*\frac{3}{8}(y+2)$

Step-by-step explanation:

The standard form of a parabola is

$(x-h)^2=4p(y-k)$ .

In order to convert $2x^2-12x-3y+12=0$ into the standard form, we first separate the variables:

$2x^2-12x+3y+12=0\\\\2x^2-12x+12=3y$

we now divided both sides by 2 to remove the coefficient from $2x^2$ and get:

$x^2-6x+6=\frac{3}{2}y$ .

We complete the square on the left side by adding 3 to both sides:

$x^2-6x+6+3=\frac{3}{2}y+3$

$x^2-6x+9=\frac{3}{2}y+3$

$(x-3)^2=\frac{3}{2}y+3$

now we bring the right side into the form $4p(y-k)$ by first multiplying the equation by $\frac{2}{3}$ :

$\frac{2}{3} *(x-3)^2=\frac{2}{3} *(\frac{3}{2}y+3)\\\\\frac{2}{3} *(x-3)^2=y+2$

and then we multiplying both sides by $\frac{3}{2}$ to get

$(x-3)^2=\frac{3}{2} (y+2)$ .

Here we see that

$4p=\frac{3}{2}$

$\therefore p=\frac{3}{8}$

Thus, finally we have the equation of the parabola in the standard form:

$\boxed{(x-3)^2=4*\frac{3}{8}(y+2)}$

5 0

2 years ago

Helpppp this is due today!!!!

Svetach [21]

-9x + 0.4 = 4

0.4 would have to be move to right (4 - 0.4)
which equals 3.6

-9x = 3.9

-9x/9 = 3.9/9

3 0

2 years ago