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timofeeve [1]
3 years ago
9

Complete the square to solve the equation below. Check all that apply. x² - 10x - 5=9

Mathematics
2 answers:
telo118 [61]3 years ago
6 0

Answer:

A. and D

Step-by-step explanation:

apex

Kaylis [27]3 years ago
4 0

Answer:

A and D

Step-by-step explanation:

Given

x² - 10x - 5 = 9 ( add 5 to both sides )

x² - 10x = 14

To compete the square

add (half the coefficient of the x- term )² to both sides

x² + 2(- 5)x + 25 = 14 + 25

(x - 5)² = 39 ← take the square root of both sides

x - 5 = ± \sqrt{39} ( add 5 to both sides )

x = 5 ± \sqrt{39}

Hence

x = 5 - \sqrt{39} → A

x = 5 + \sqrt{39} → D

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Hacksaw’s Boats of St. Lucia takes tourists on a daily whale/dolphinwatch cruise. Their brochure claims an 80% chance of siting
Fittoniya [83]

Answer:

The probability you see a dolphin or a whale on both days is 0.64

Step-by-step explanation:

Consider the provided information.

It is given that the brochure claims an 80% chance of siting a dolphin or a whale.

The provided claims can be written as: 80% or 0.80

Let say first day you see a dolphin or a whale and same happen on the next day.

Thus, the probability is:

0.80 × 0.80 = 0.64

Probability of see them on both days is 0.64

Hence, the probability you see a dolphin or a whale on both days is 0.64

5 0
3 years ago
Match each output to its input for the function. Let f(x) = −2x + 3 f(0) f(−32) f(10) f(−17) and the choices are 3,-17,37,6
Andru [333]

Answer:

Below

Step-by-step explanation:

● f(x) = -2x + 3

● f (0) = -2 (0) +3 = 3

● f(-32) = -2(-32)+3 = 64 + 3 = 67

● f(10) = -2(10) +3 = -20 + 3 = -17

● f(-17) = -2(-17) + 3 = 34 + 3 = 37

● f(10) => -17

● f(-17) => 37

4 0
3 years ago
A new amusement park presold discounted tickets for the opening day as well as upon arrival at the park the opening day ticket s
julia-pushkina [17]

Answer:

-64 tickets per hour

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve for the variable -3x 4 > 5
Ierofanga [76]
-3x + 4 > 5
-3x > 5 - 4
-3x > 1
x < 1/-3
x < -1/3
7 0
3 years ago
If f(x) = -3x - 5 and g(x) = 4x - 2, find (F- g)(x).
yan [13]

<u>Answer:</u>

If f(x) = -3x - 5 and g(x) = 4x - 2 then (f - g)(x) = -7x - 3

<u>Solution:</u>

We need to determine the value of (f - g)(x)

Given that the function is f(x) = -3x - 5 and the other function is g(x) = 4x - 2

The value of (f - g)(x) can be found by as follows:

<em>(f - g)(x) = f(x) - g(x)</em>

On substituting the given value of f(x) and g(x) we get

(f - g)(x) = (-3x - 5) - (4x - 2)

Upon solving we get

(f - g)(x) = -3x -5 -4x + 2 = -7x -3

Hence the value of (f - g)(x) is equal to -7x - 3

8 0
3 years ago
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