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2 years ago

Find the value of x.

Mathematics

2 answers:

Zina [86]2 years ago

6 0

Answer:

Step-by-step explanation:

if you subtract 55 from 90 and divide it by 5 then you get your answer, which is C:7

Andrews [41]2 years ago

6 0

Answer: 7

Step-by-step explanation: This is a adjacent angle, meaning they've a common vertex and side but don't overlap.

In the problem...

This is a right and acute angle. So, we can subtract 90 by 55 to find the value of x.

90 - 55 = 35. We're not done yet. In the problem, it says 5x. We'll need to divide 35 by 5 to get our answer.

35 ÷ 5 = 7

Hence, 7 is the answer.

Let me know of any questions or concerns.

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I hope this helps! I'm hoping google translated your question properly, I'm native english speaking
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2 years ago

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2 years ago

What is the inverse of the function f(x) = x – 12?

maxonik [38]

Answer:

f(x)^-1=x+12

Step-by-step explanation:

f(x)=x-12

y=x-12

x=y-12

y=x+12

f(x)^-1=x+12

Hope it helps.

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3 years ago

Read 2 more answers

Let f(x)=(18)3^x. find the equation of the line between the points (-2,f(-2)) and (1,f(1))

horsena [70]

$\text{Given that,} \\\\f(x) = 18 \cdot 3^x \\\\f(-2) = 18 \cdot 3^{-2} = 2\\\\f(1) = 18 \cdot 3^1 = 54\\ \\\text{So,}~ (x_1,y_1) = (x_1, f(-2)) = (-2,2) ~\text{and}~ (x_2,y_2) = (x_2, f(1)) = (1,54)\\ \\\text{Slope,}~ m = \dfrac{y_2 -y_1}{x_2 -x_1} = \dfrac{54-2}{1+2} = \dfrac{52}3 \\\\$

$\text{Equation of line,}\\\\~~~~~~~y - y_1 = m (x-x_1)\\\\\\\implies y-2 = \dfrac{52}3(x+2)~~~~~~~~~~~;[\text{Point-Slope form.]} \\\\\\\implies y-2 = \dfrac{52}3x + \dfrac{104}3\\\\\\\implies y = \dfrac{52}{3}x + \dfrac{104} 3 +2\\\\\\\implies y = \dfrac{52}3 x +\dfrac{110}3 ~~~~~~~~~~~~~~~;[\text{Slope -Intercept form}]$

6 0

2 years ago

Solve the system

konstantin123 [22]

Use substitution.

y = 2 - x and y = 4x + 7 can become

2 - x = 4x + 7

Now solve for x

-5 = 5x

-1 = x

Now plug -1 for x in either equation.

y = 2 - x -> y = 2 - (-1) -> y = 3
y = 4x + 7 -> y = 4*-1 + 7 -> y = -4 + 7 -> y = 3

So C) is the correct answer.

7 0

3 years ago