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3 years ago

W(x)=4x+5, find w(-8)

2 answers:

5 0

If I remember properly, the number in the parentheses will be substitute the x on the other side of the equation sign. So w(-8)=4(-8)+5, or -40+5 which is equal to -35

Genrish500 [490]3 years ago

3 0

Just Put -8 in for X 4(-8)+5 goes to -32+5 to 27

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Graph the equation <br><br>2x + 3y = 9

jeka57 [31]

$2x + 3y = 9\\3y = -2x + 9\\y = -\frac{2}{3}x + 3$

Look at the graph picture I attached

$y = mx + c$

c is the intercept, which is why the graph crosses the y-axis at +3

to find where it crosses the x-axis, we make y = 0

$y = 0\\\to -\frac{2}{3}x + 3 = 0\\-\frac{2}{3} = -3\\\frac{2}{3}x = 3\\2x = 9\\x = \frac{9}{2}\ \ (=4.5)$

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2 years ago

Use your device keyboard to enter x+1= 7 in the box.<br>Check Answer

egoroff_w [7]

<h2>ANSWER:</h2>

_______________________________________________________

Answer is x = 6

_______________________________________________________

<h2>EXPLANATION:</h2>

_______________________________________________________

We know that 7 - 1 is 6. 6 is what x equals because 7 - 1 is 6 and 6 + 1 is equal to 7.

Hope this helps!

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3 years ago

A rhombus diagonals bisects opposite <br>a)angles <br>b)line

hichkok12 [17]

Answer:

The answer to this question is angles

3 0

3 years ago

Read 2 more answers

I need answer asap !! please and thanks !

rusak2 [61]

Remember, ab+ac=a(b+c)

undistribute the 14
14(l)+14(3a)=14(l+3a)

D is answer

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3 years ago

Show that 4x - x? – 7 is always<br> negative.<br><br><br><br><br> Help

Verizon [17]

<em>Question No 7</em>

Answer:

Please check the explanation.

Step-by-step explanation:

Show that 4x - x² - 7 is always negative.

Given

4x - x² - 7

4x - x² - 7 is always negative because:

-x²-7 will alwas be negative for all the values of x,

The value of - x² - 7 will always be less than 4x for all the values of x

Hence, 4x - x² - 7 is always negative

For example,

let suppose we enter x = 1

$4(1)-1^{2} -7\\=4-1-7\\=4-8\\=-4$

let suppose we enter x = -1

$4(-1)-(-1)^{2} - 7\\= -4 - 1 - 7\\= -12$

6 0

3 years ago