1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
evablogger [386]
3 years ago
8

If some one could help me with these three questions I will be stoked!!!please please help me my teacher didn’t walk us through

this at all

Mathematics
1 answer:
salantis [7]3 years ago
5 0

17) replace the given number for "x" and evaluate

a) x² + 2x + 1   ; when x = 3

  3² + 2(3) + 1

= 9 + 6 + 1

= 16

b) x² + 2x + 1   ; when x = -4

  (-4)² + 2(-4) + 1

= 16 - 8 + 1

= 9

c) x² + 2x + 1   ; when x = 3

  (-22.872)² + 2(-22.872) + 1

= 523.128384 - 45.744 + 1

= 478.384384

18) The dependent variable is affected by the other variable and is the "output"   The independent variable is the input.

a) y = 3x - 5;    "x" is the independent variable

b) the time of day is the independent variable  (you would input the time of day to calculate the temperature).

19) Let the x-axis represent the length of the lumber cut off and the y-axis represent the length of the lumber remaining.

You might be interested in
On Earth, 1kg=9.8N=2.2lbs. On the moon, 1kg=1.6N=0.37lbs
Trava [24]
A.50*9.8
B.50*1.6
C.45.359237
D.45.3*1.6
8 0
3 years ago
Math problem can somebody help!!!!
abruzzese [7]

Answer:

if am correct your answer will be letter d

Step-by-step explanation:

6 0
2 years ago
How to find midpoint of (-3,2) (1,3)
sasho [114]

Answer:

(-1,2.5)

Step-by-step explanation:

8 0
3 years ago
Help<br><br> Determine which equation is parallel to line jk and which is perpendicular to line jk.
alukav5142 [94]

Answer:

5x + 3y = 13 parallel.

6x - 10y = 7 perpendicular.

Step-by-step explanation:

Two lines with slopes m_1 and m_2 are parallel when m_1=m_2 and are perpendicular when m_1*m_2=-1

Now determine the slope of all the lines

The line jk passes through the points

(-5,5) and (1,-5) so its slope is

\frac{-5-5}{1-(-5)}=\frac{-10}{6}=-\frac{5}{3}

To determine the slope of the lines in the blue rectangles, isolate y from each one and the coefficient of x is the slope

5x-3y = 8 ------> y = (5/3)x + 8/3 ------> slope 5/3

Neither parallel nor perpendicular.

6x+10y = 11 ------> y = (-6/10)x + 11/10 = (-3/5)x + 11/10 ------> slope -3/5

Neither parallel nor perpendicular.

5x + 3y = 13 ------> y = (-5/3)x + 13/3 ------> slope -5/3

This line is parallel

6x - 10y = 7 ------> y = (6/10)x - 7/10 = (3/5)x -7/10 ------> slope 3/5

Since (-5/3)(3/5) = -1 this line is perpendicular.

8 0
2 years ago
Help please !!!!!
tatuchka [14]
*triple phytagoras*
first triangle h = second triangle h = 24 in

x = 7 (triple phytagoras)
6 0
2 years ago
Other questions:
  • write an expression that describes the number of points scored on touchdowns t and points after touchdowns p by one team in a ga
    7·1 answer
  • Number 2 is what I'm stuck on
    5·1 answer
  • How to use unit circle to evaluate the six trig functions of theta
    13·1 answer
  • What is the answer to 72 = 24 + w
    13·2 answers
  • The volume of a cube is given by , where s is the side length of the cube. What is the difference of the volumes of two cubes wi
    6·2 answers
  • FIRST PERSON TO ANSWER GETS BRAINIEST ANSWER SO HURRY QUICK QUICK FIRST PERSON TO ANSWER GETS BRAINIEST ANSWER SO HURRY QUICK QU
    14·1 answer
  • Triangles ABC and EDC are outlined on a bridge. The triangles share vertex C and angles D and B are right angles. A new bridge s
    7·1 answer
  • (1 point) A recent report for a regional airline reported that the mean number of hours of flying time for its pilots is 56 hour
    5·1 answer
  • Please answer clear i need answers now please
    12·1 answer
  • This is very urgent please help!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!