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Mathematics

1 answer:

skad [1K]3 years ago

8 0

Answer:

Step-by-step explanation:

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If a quadratic function has x-intercepts at (-7,0) and 10,0), where would

madam [21]

Answer:

x = 1.5

Step-by-step explanation:

Since the axis of symmetry is between the 2 x intercepts, we can find it by finding the average of the x-coordinates of the 2 points.

(-7 + 10) / 2

3/2

= 1.5

So, the axis of symmetry is at x = 1.5

8 0

2 years ago

Find the value of x.

Sergeu [11.5K]

$\blue{\huge{\red{\boxed{\green{\mathfrak{QUESTION}}}}}}$

Find the value of x.

$\orange{\underline{\huge{\bold{\textit{\green{\bf{FORMULA}}}}}}}$

SUM OF ANGLES ON STRAIGHT LINE = 180°

$\huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}$

$ANGLES\: R :-( x - 10)°,(3x + 25)°,(x + 5)°, \\ \\ ( x - 10)° + (3x + 25)° + (x + 5)° = 180 \\ 5x + 20 = 180 \\ 5x = 160 \\ x = \frac{160}{5} \\ x = 32° \\$

$\red{ANGLES R :-} \\ \pink{( x - 10)° = 32 - 10 = 22°} \\ \blue{ (3x + 25)° = 32 \times 3 + 25 = 96 + 25 = 121°}\\ \orange{(x + 5)° = 32 + 5 = 37°}$

3 0

3 years ago

Read 2 more answers

A study of recent records of car accidents revealed that average proportion of drivers who were distracted by their phones at th

aksik [14]

Answer:

At least 547 records need to be studied.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.