All categories

3 years ago

Given f(x) = –3x – 7, what is f(–4)?

Mathematics

2 answers:

lyudmila [28]3 years ago

8 0

The answer is D hope this help

Degger [83]3 years ago

8 0

F(x) = -3x - 7....looking for f(-4) means sub in -4 everywhere there is an x

f(-4) = -3(-4) - 7
f(-4) = 12 - 7
f(-4) = 5 <===

You might be interested in

It takes 96 cubic in cubes to fill this figure (its a rectangle) 6 inches 2 inches 8 inches find the volume of the figure by mul

spin [16.1K]

It is equal to how many cubes were in the rectangle.

3 0

3 years ago

Calculate the area of a circle with radius of 2 cm

Mariulka [41]

A = pi × r²

3.14 x 2²

3.14 x 4

A = 12.56636 ≈ 12.56

hopefully this helps u and if u know the formula to solve it, it is super easy

6 0

3 years ago

Read 2 more answers

Terry has 15 candles. She needs at least 100 candles. The candles she wants are sold in boxes of 8. What is the least number of

enyata [817]

Answer:

Answer: 11

Step-by-step explanation:

1. 100-15=85

2. 85/8=10.625

3. 10.625 rounds up to 11

6 0

4 years ago

Read 2 more answers

Create a truth table and prove that for any statement p, ~(~p) equals p. (said it should be a 3 by 3 table with p; ~p; ~(~p ) at

Musya8 [376]

Answer:

Truth value of ~(~p) is same as the truth value of p.

Step-by-step explanation:

For any statement p the truth table for p, ~p and ~(~p) will be as the figure attached. In this table we know that If truth value for p is true then ~p will be false and ~(~p) will be true which is same truth value as truth value of p.

Now if the truth value of any statement is false then truth value for ~p will be true and for ~(~p) will be false which is again similar to the statement p.

Hence truth value of any statement p is similar to the truth value of ~(~p).

4 0

3 years ago

A line segment has endpoints (-2,-3) and (4,4). Find the length of the segment and find the midpoint.

uysha [10]

$\bf ~~~~~~~~~~~~\textit{distance between 2 points}
\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~ -2 &,& -3~) 
% (c,d)
&&(~ 4 &,& 4~)
\end{array}
\\\\\\
d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}
\\\\\\
d=\sqrt{[4-(-2)]^2+[4-(-3)]^2}\implies d=\sqrt{(4+2)^2+(4+3)^2}
\\\\\\
d=\sqrt{36+49}\implies \boxed{d=\sqrt{85}}\\\\
-------------------------------$

$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }
\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~ -2 &,& -3~) 
% (c,d)
&&(~ 4 &,& 4~)
\end{array}\qquad
% coordinates of midpoint 
\left(\cfrac{ x_2 + x_1}{2}\quad ,\quad \cfrac{ y_2 + y_1}{2} \right)
\\\\\\
\left( \cfrac{4-2}{2}~~,~~\cfrac{4-3}{2} \right)\implies \left(\cfrac{2}{2}~~,~~\cfrac{1}{2} \right)\implies \boxed{\left(1~,~\frac{1}{2} \right)}$

5 0

4 years ago