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2 years ago

How to solve step by step

Mathematics

1 answer:

jasenka [17]2 years ago

3 0

X² = 16

the way to isolate your x variable is to square root both sides

√x² = √16
x = <span>± 4

so your answers are 4 and -4</span>

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A master student is planning to take a qualifying exam in the coming summer. She has three chances. The first one is in June. If

Soloha48 [4]

Answer:

Step-by-step explanation:

Given

$P_1=$ Probability of clearing exam in 1 st attempt=0.5

$P_2=$ Probability of clearing exam in 2 nd attempt=0.7

$P_3=$ Probability of clearing exam in 3 rd attempt=0.8

Probability that she passes the exam $=P(1 st\ attempt)+P(1\ fail)\cdot P(2\ pass)+P(1\ fail)\cdot P(2\ fail)\cdot P(3 rd pass)$

$P=0.5+0.5\times 0.7+0.5\times 0.3\times 0.8=0.97$

(b)P(Pass qualification on 2nd try|passes qualification)

P(Pass qualification on 2nd try|passes qualification) $=\frac{P(fail\ on\ 1 )\cdot P(pass\ in\ 2nd)}{P(passes)}$

P(Pass qualification on 2nd try|passes qualification) $=\frac{0.5\times 0.7}{0.97}=0.3608$

5 0

3 years ago

A: Complementary

stiv31 [10]

Answer:

Vertical

Step-by-step explanation:

Vertical angles are two nonadjacent angles formed by two intersecting lines.

3 0

1 year ago

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WHAT IS THE MATHEMATICS OF-3 1/2

lana66690 [7]

Answer:

Answer: 3 1/2 as a decimal is 3.5.

Step-by-step explanation:

8 0

3 years ago

Round 2. 873 to the nearest tenth

PtichkaEL [24]

2.873 ≈2.9 (nearest tenth)

6 0

3 years ago

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Which of the following describes the translation of the graph of y = x2 to obtain the graph of y = -x2 - 3?

Ray Of Light [21]

Answer:

reflections across the x axis and a shift down 3 units

Step-by-step explanation:

y = x^2

The negative sign means it is a reflection across the x axis y = −f(x)

y = -x^2

The subtraction of 3 means we are shifting down 3 units

y = -x^2 -3

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3 years ago