3 years ago

Choose the correct converse.

Mathematics

1 answer:

PIT_PIT [208]3 years ago

7 0

B is the answer to your question

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Use the quadratic formula to solve for the roots of the following equation. x 2 – 4x + 13 = 0

Artyom0805 [142]

Quadratic Formula: $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ , with a = x^2 coefficient, b = x coefficient, and c = constant

With our equation, plug in the values:

$x=\frac{4\pm \sqrt{(-4)^2-4*1*13}}{2*1}$

Next, solve the exponent and multiplications:

$x=\frac{4\pm \sqrt{16-52}}{2}$

Next, solve the subtraction:

$x=\frac{4\pm \sqrt{-36}}{2}$

Next, factor out i (i = √-1):

$x=\frac{4\pm \sqrt{36}i}{2}$

Next, solve the square root:

$x=\frac{4\pm 6i}{2}$

Lastly, divide and your answer is:

$x=2\pm 3i$

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3 years ago

Read 2 more answers

The length of a car’s skid mark in feet is given by L = 0.046s

Alexxandr [17]

100 = 0.046s^2 - 0.199s + 0.264
0 = 0.046s^2 - 0.199s - 99.736
s= 48.77691127... or -44.45082431 (reject)

The car's speed was approximately 48.8 mph.

6 0

3 years ago

-3x + 4y = 12; 3x - 5y = 18 Solve

viktelen [127]

X = -44
y = -30

Solve for y in equation 1.
Plug in the new value for y into equation 2 to solve for x.
Next, plug your x value into either equation to find y. You can choose either, but I picked the 1st equation.

Check out pic!

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3 years ago

The ratio of customers who purchase items with coupons to customers who don’t use coupons is 6 to 16. If 9 customers use coupons

oksano4ka [1.4K]

Answer:13.5

Step-by-step explanation: 6:9

9:?

divide both by 3 2:3

now multiple 4.5. 9:13.5

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2 years ago

Which of the following is a mixed number. 2/5,5/2,2.3,2 1/2

icang [17]

2 1/2 is a mixed number

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3 years ago