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3 years ago

What would the other number be?

Mathematics

2 answers:

natita [175]3 years ago

7 0

I do not under stand need more info

anastassius [24]3 years ago

5 0

Really, you'd benefit from drawing this situation. Plot (1,2). Notice that y=2 here. If x remains the same, y moves from 3 units above the horiz. line y = -1 to 3 units below y = -1, and so we have the new point (1,-4).

Now reflect the pt. (1,-4) about y=1. Notice that -4 is 5 units beneath y = 1. So add 5 units to y=1, obtaining y= 6. The new point is (1,6).

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Six times a number x and was added to 90 and the result is -42. What is the number

ANTONII [103]

According to the question,

6x + 90 = -42

The value of x.

<h3>Solution:</h3>

6x = -42 + 90

or, x = 48/6

or, x = 8

<h2>Answer:</h2>

The value of x is 8.

6 0

3 years ago

3x2 = 81<br> b. (x - 1)(x + 1)-9 = 5x<br> C. X - 9x + 10 = 32<br> d. 6x(x - 9) = 29

irakobra [83]

Answer:

a. 3x^2 = 81

x^2 = 27

$x = 3\sqrt{3} or -3\sqrt{3}$

Step-by-step explanation:

6 0

3 years ago

Givenf(x)=6(8−x)+5.<br> (a) What does the notation f (−2) mean? (b) What is the value of f (−2) ?

Nonamiya [84]

Answer:

b. 65

a. The notation f(-2) means that we want to evaluate the value of the equation when x = -2

Step-by-step explanation:

A. The notation f(-2) means that we want to evaluate the value of the equation when x = -2

B. We will simply substitute the value of 2 for x

f(x) = 6(8-x) + 5

f(-2) = 6(8 - (-2)) + 5

f(-2) = 6(8 + 2) + 5

f(-2) = 6(10) + 5 = 60 + 5 = 65

5 0

3 years ago

Calculus question plzzzz

miss Akunina [59]

Answer:

Step-by-step explanation:

$f(x)=\frac{1}{\sqrt{x} }\\f'(x)=-\frac{1}{2} x^{-\frac{3}{2}}\\\\f'(4)=-\frac{1}{2} 4^{-\frac{3}{2} }=-\frac{1}{2} \frac{1}{4^\frac{3}{2} } \\=-\frac{1}{2} *\frac{1}{8}=-\frac{1}{16} \\when x=4\\y=f(x)=\frac{1}{\sqrt{4} } =\frac{1}{2} \\\\eq.~ of ~tangent ~line~is\\y=-\frac{1}{2} -\frac{1}{16} (x-4)$

3 0

3 years ago

Evaluate the expression 5(8y+3r-5z) if r=3,y=5/8,and z=2

snow_lady [41]

First you plug in the missing values
5(8×5/8+3×3-5×2) = 20

3 0

3 years ago