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
goldfiish [28.3K]
3 years ago
13

F(x) = 2x2 - 4x?; Find (-4)

Mathematics
1 answer:
anastassius [24]3 years ago
4 0

Answer:

0 (zero)

Step-by-step explanation:

Plug in the variable for -4 and solve

y= 2(-4)2-4(-4)

y= -8(2)-4(-4)

y=-16+16

y=0

You might be interested in
Please help me with these Algebra Questions!!
Bess [88]

Answer:

There is nothing here!

Step-by-step explanation:

I don't see anything to solve.

: )

3 0
3 years ago
Write an expression that can be used to multiply 6x198 mentally
RoseWind [281]
 Do a mental sum for 6 x 200 (1200) then subtract 6<span>x 2 (12) to give you 1188.</span>
8 0
3 years ago
Read 2 more answers
Triangle X Y Z is shown. Angle X Z Y is a right angle. Angle Z X Y is 60 degrees and angle X Y Z is 30 degrees. The length of hy
vladimir1956 [14]

Answer:

StartFraction StartRoot 3 EndRoot Over 3 EndFraction

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

we know that

In the right triangle XYZ

cos(Y)=\frac{ZY}{XY} ---> adjacent side divided by the hypotenuse

substitute the values

cos(30\°)=\frac{ZY}{4}

Remember that

cos(30\°)=\frac{\sqrt{3}}{2}

so

substitute

\frac{\sqrt{3}}{2}=\frac{ZY}{4}

ZY=(4)\frac{\sqrt{3}}{2}

ZY=2\sqrt{3}\ units

step 2

sin(Y)=\frac{XZ}{XY} --> opposite side divided by the hypotenuse

substitute the values

sin(30\°)=\frac{XZ}{4}

Remember that

sin(30\°)=\frac{1}{2}

so

\frac{1}{2}=\frac{XZ}{4}

XZ=2\ units

step 3

tan(Y)=\frac{XZ}{ZY} --> opposite side divided by adjacent side

substitute the values

tan(Y)=\frac{2}{2\sqrt{3}}

tan(Y)=\frac{1}{\sqrt{3}}

Simplify

tan(Y)=\frac{\sqrt{3}}{3}

so

StartFraction StartRoot 3 EndRoot Over 3 EndFraction

7 0
3 years ago
Read 2 more answers
A rectangular gate has a diagonal bar running across it.The gate is 80cm high and 2m wide.Work out the length of the bar.Give yo
babymother [125]

Answer:

Step-by-step explanation:

A rectangular gate has a diagonal bar running across it.The gate is 80cm high and 2m wide.Work out the length of the bar.Give your answer in surd form..

8 0
3 years ago
Martina filled 100 mL container with water. Simone field a 1.2 L container. How much water more water did Simone have her contai
Helga [31]

20 mL

hope this helps

                                            

              

     

5 0
3 years ago
Other questions:
  • [ it's a fraction but i can't write it as such. ]
    9·1 answer
  • Sketch the following to help answer the question. Kite QRST has a short diagonal of QS and a long diagonal of RT. The diagonals
    5·2 answers
  • Carla is baking brownies for the school bake sale. The batter fills a pan that is 20 cm long by 16 cm wide by 4.4 cm deep.Then,
    15·1 answer
  • Of the fifth grade students 15/20 went to the book fair.Of the students who went to the book fair,12/16 bought at least one book
    5·1 answer
  • In a particularly sunny month, Solaire's solar panels generated
    13·2 answers
  • Does anyone know what the output is​
    13·2 answers
  • I’ll give brainliest
    11·2 answers
  • What angles are congruent and opposite each other when lines intersect
    5·2 answers
  • Given: Circle W W (-4, 6) Radius = 10 Units Which point lies on circle W?
    6·1 answer
  • Y = 2(6 + 1) + 5(3 + 2)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!