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3 years ago

The two numbers that multiply to 11 and add to -12 are

Mathematics

2 answers:

Ahat [919]3 years ago

7 0

Answer: 11x1 is 11. 11- 13 = -12

Step-by-step explanation:

miss Akunina [59]3 years ago

4 0

Answer:

-11 and -1

Step-by-step explanation:

These are the two numbers that multiply to 11 and add to -12.

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I need help if 12 counters are 3/4of a set then what is the whole set

jeyben [28]

12 = 3/4 * x
12 ÷ 3/4 = x
12 * 4/3 = x
48/3 = x
16 = x

Answer: The whole set is 16 counters

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3 years ago

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Felix and Oscar own a pastry shop. Working alone Felix can decorate 8 dozen cookies in 90 minutes. Oscar, on

Bingel [31]

Working together, decorating 16 dozens of cookies will take 103 minutes.

Let's calculate theor individual work rate :

Rate = 1/ time

Felix's rate = 1/90

Oscar's rate = 1/120

Combined rate = 1/90 + 1/120 = (4 + 3) / 360 = 7/360

Time taken for both of the to decorate 8 dozens :

Reciprocal of their combined rate = 1 ÷ (7/360) = 51.428571 minutes

Hence, the time taken to decorate 16 dozens will be :

(16/8) × 51.428571 = 102.857 = 103 minutes (nearest while number).

Learn more :brainly.com/question/18796573

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2 years ago

Marc bought a giant submarine sandwich for his party. The sandwich was cut into 6 pieces. Each piece was 1/2 foot long.

KonstantinChe [14]

It was 3 feet long...............

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3 years ago

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1.) Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth .x squared minus 21 x equals n

Andrew [12]

Part 1
We are given $x^2-21x=-4x$ . This can be rewritten as $x^2-18x=0$ .
Therefore, a=1, b=-18, c=0.
Using the quadratic formula
$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-\left(-18\right)\pm \sqrt{\left(-18\right)^2-4\left(1\right)\left(0\right)}}{2\left(1\right)}$
$x=\frac{18\pm 18}{2}$

The values of x are
$x_1=\frac{18-18}{2}=0$
$x_2=\frac{18+18}{2}=18$

Part 2
Since the values of y change drastically for every equal interval of x, the function cannot be linear. Therefore, the kind of function that best suits the given pairs is a quadratic function.

Part 3.
The first equation is $y=x^2+2$ .
The second equation is $y=3x+20$ .

We have
$x^2+2=3x+20$
$x^2-3x-18=0$
Factoring, we have
$\left(x-6\right)\left(x+3\right)=0$
Equating both factors to zero.
$x_1-6=0\rightarrow x_1=6$
$x_2+3=0\rightarrow x_2=-3$

When the value of x is 6, the value of y is
$y=3\left(6\right)+20=38$

When the value of x is -3, the value of y is
$y=3\left(-3\right)+20=11$

Therefore, the solutions are (6,38) or (-3,11)

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3 years ago

14 is 56% of what number

Sedbober [7]

7.84 56% off 14 is equal to (56 x 56) / 100

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3 years ago

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