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
Anika [276]
3 years ago
15

Evaluate -4x-4 When x = -5

Mathematics
2 answers:
qwelly [4]3 years ago
7 0

Answer:

16

Step-by-step explanation:

-4x-5=20 and 20-4=16

Nastasia [14]3 years ago
5 0

Answer:

16 i think

Step-by-step explanation:

You might be interested in
A: What are the solutions to the quadratic equation x2+9=0? B: What is the factored form of the quadratic expression x2+9? Selec
Paraphin [41]

Answer:

A. The solutions are x=3i,\:x=-3i.

B. The factored form of the quadratic expression x^2+9=(x-3i)(x+3i)

Step-by-step explanation:

A. To find the solutions to the quadratic equation x^2+9=0 you must:

\mathrm{Subtract\:}9\mathrm{\:from\:both\:sides}\\\\x^2+9-9=0-9\\\\\mathrm{Simplify}\\\\x^2=-9\\\\\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\x=\sqrt{-9},\:x=-\sqrt{-9}

x=\sqrt{-9} = \sqrt{-1}\sqrt{9}=\sqrt{9}i=3i\\\\x=-\sqrt{-9}=-\sqrt{-1}\sqrt{9}=-\sqrt{9}i=-3i

The solutions are:

x=3i,\:x=-3i

B. Two expressions are equivalent to each other if they represent the same value no matter which values we choose for the variables.

To factor x^2+9:

First, multiply the constant in the polynomial by i^2 where i^2 is equal to -1.

x^2+9i^2

Since both terms are perfect squares, factor using the difference of squares formula

a^2-i^2=(a+i)(a-i)

x^2+9=x^2+9i^2=\left(-3i+x\right)\left(3i+x\right)

5 0
3 years ago
Can you help me with this question please
Aleksandr-060686 [28]

Answer:

The actual length of the lap = 250 meters

Step-by-step explanation:

∵ The scale factor of the map is 1:1000

∵ The length of the lap on the map is 25 cm

∴ \frac{1}{1000}=\frac{25}{x}

Where x is the actual length of a lap

∴ x = (25 × 1000) ÷ 1 = 25000 cm

∵ 1 meter = 100 centimeter

∴ The actual length of the lap = 25000 ÷ 100 = 250 meters

7 0
4 years ago
Read 2 more answers
Write the equation of a line that passes through the points
xxTIMURxx [149]
Y=-3x+-1. you subtract (-4)-(-1) =3 and 1-0 and you get 1 . so the slope is 3 over 1 . and the y intercept is -1
3 0
3 years ago
Read 2 more answers
A certain amount of money is shared between
ICE Princess25 [194]
<h3>Hello There !! </h3>

<h3><u>Explanation :- </u></h3>

• Amount received by Rui = 5x = 5 x 11 = $55..

• Amount received by Vishal = 9x = 9 x 11 = $99..

Let the amount received by Rui be 5x..

Then the amount received by Vishal is 9x ..

And by this data = 5x + 44 = 9x ..

  • 4x = 44
  • x = 44/4 = 11

• Amount received by Rui = 5x = 5 x 11 = $55..

• Amount received by Vishal = 9x = 9 x 11 = $99..

<h3>Hope this helps you..! </h3>
7 0
3 years ago
HELP .!!! Plz (elementary question)
Goryan [66]
6/4 of a cup

also its 1 and 2/4 cups
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is 15×70?????????
    10·2 answers
  • Which expression gives the area of the triangle shown below
    11·1 answer
  • Suppose that a particular artillery piece has a range r = 9010 yards . find its range in miles. use the facts that 1mile=5280ft
    12·2 answers
  • Find the slope given to the points (-2,-9) and (-1,-3)
    5·1 answer
  • What are the coordinates of point B in the diagram?
    15·2 answers
  • You wish to purchase a new car and can afford monthly repayments of up to $250 per month. You see a car you like for $12,000 and
    15·1 answer
  • Find the slope of a line parallel to the line through thepoints ) (10, 7) and (-4, 7) ​
    13·1 answer
  • Write an equation passing through (-6,5) that is parallel to y=1/2x-7
    5·1 answer
  • if maria earned $60 in interest over a 4 year period at a 4% simple annual interest how much did she originally deposit in savin
    9·1 answer
  • Caleb had to share 3 and 1/4 boxes of supplies with his 12 classmates what fraction of a box does each student receive
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!