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
nlexa [21]
3 years ago
5

What is the answer if x=2? -3x^2+14x-2

Mathematics
2 answers:
KIM [24]3 years ago
5 0
Simple...

you have: x=2 --->>> -3x^{2}  +14x-2

plug it in-->>>

-3(2)^{2} +14(2)-2

=14

Thus, your answer.
KiRa [710]3 years ago
3 0
First copy the problem -3x^2+14x-2
next substitute 2 for x (-3*2) *2 +14(2)-2
then get rid of parentheses -6*2+24-2
then combine like terms member order of operations -12+24-2
and finish it 10
I hope this helped you
You might be interested in
Use the difference of two squares to find the product of 22 and 18.
vladimir2022 [97]

Answer:

396

Step-by-step explanation:

Difference of two squares is breaking down numbers into pieces and using the distributive property to solve. The pieces should be in the form (a-b)(c+d).

Write 22 as (20 + 2) and 18 as (20-2).

(20+2)(20-2) = 400 + 40 - 40 - 4 = 400 - 4 = 396

4 0
3 years ago
Estimate -9 1/6 + 2 1/3 + (-1 7/8) I have more questions so if you want more just simply ask.
BigorU [14]

-8.70833333333 about but you can round to the nearest tenth (-8.7) or nearest whole number (-9)

4 0
3 years ago
A jeweler wants to combine a 60% gold alloy with a 20% gold alloy to make 1000 grams of 50% gold alloy. How many grams of 60% al
kramer

Answer:

750 grams of 60% alloy

Step-by-step explanation:

Define x = amount of 60% alloy and y = amount of 20% alloy

Equating the amounts of gold:

0.6x+0.2y = 1000(0.5)

Since there must be 1000 grams total:

x+y = 1000

Writing the 2 resulting equations together:

0.6x + 0.2y = 500

x + y = 1000

Multiply the first equation by 5:

3x + y = 2500

x + y = 1000

Subtracting the 2nd equation from the 1st:

2x = 1500

x = 750

Answer: 750 grams of 60% alloy

7 0
2 years ago
2y-18x=-26 solve for y
Alekssandra [29.7K]
2y - 18x = -26

Add 18x to both sides.

2y = -26 + 18x

Divide by 2 on both sides.

y = -13 + 9x

y = 9x - 13
8 0
2 years ago
Need help and will be giving Brainliest
Katena32 [7]

Answer:

x-intercept (s):

For this case h (x) = 0

x2 - 2x - 8 = 0

(x-4) * (x + 2) = 0

x1 = 4

x2 = -2

y-intercept:

For this case x = 0

h (0) = (0)2 - 2 (0) - 8

h (0) = - 8

vertex:

We derive the equation:

h '(x) = x2 - 2x - 8

h (x) = 2x - 2

We match zero:

2x-2 = 0

x = 2/2

x = 1

We evaluate the function for x = 1

h (1) = (1)2 - 2 (1) - 8

h (1) = 1 - 2 - 8

h (1) = -9

The vertex is:

(1, -9)

axis of symmetry of the function:

x = 1

Step-by-step explanation:

hope it helps

6 0
3 years ago
Other questions:
  • What is the volume of the rectangular prism
    14·2 answers
  • -42 minus 10= -52 and please explain how you got the answer
    10·1 answer
  • The larger of two numbers is 12 times the smaller number. if the sum of two numbers is 15,600, find the two numbers.​
    9·1 answer
  • HELP ASAP IDK WHAT TO DO PICTURE
    12·1 answer
  • Una receta que sirve a dos personas necesita 3/4 taza de agua. Cuanta agua se necesita si el cocinero quiere hacer suficiente pa
    10·1 answer
  • What is true about 5–√?
    12·2 answers
  • Please help me thank you
    9·1 answer
  • What's the answer for this
    8·1 answer
  • I need help with number 6
    8·1 answer
  • A rectangular prism has a height of 4.5 cm, length of 7.2 cm and a width of 9 cm. Joe is going to cover the sides only. How much
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!