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
blsea [12.9K]
3 years ago
7

1. What is the value of 5x² – 3x + 5 when x=2?

Mathematics
2 answers:
Andrews [41]3 years ago
4 0

Answer:

<em>624 is the answer</em>

Step-by-step explanation:

5x²-3x+5        x=2

plug in x=2: 25²-6+5=?

do the 25²: (25*25=625)

plug in 625 into the equation: 625-6+5

subtract 6 from 625: 625- 6= 619

plug 619 into your equation: 619+5=?

add 5 to 619: 619+5= 624

PolarNik [594]3 years ago
3 0

Answer:

19

Step-by-step explanation:

5x² – 3x + 5

Substitute 2 in for x

5(2)² - 3(2) + 5

Solve exponents first

5(4) - 3(2) + 5

Solve/multiply parenthesis

20 - 6 + 5

Add and subtract

19

Hope this helps :)

You might be interested in
a solid consists of cylinder surmounted by a right circular cone. The height of the cone is 2h. If the volume of the solid is 3
Mademuasel [1]

Answer:

height of cylinder = 4/3 h

Step-by-step explanation:

The solid has a cylinder surmounted with a cone .Therefore, the volume of the solid is the sum of the cone and the cylinder.

volume of the solid = volume of cylinder + volume of cone

volume of the solid = πr²h + 1/3πr²h

let

height of the cylinder = H

recall

the height of the cone = 2h

volume of the solid = πr²h + 1/3πr²h

3(1/3πr²2h) = πr²H + 1/3πr²2h

2πr²h = πr²H + 2/3 πr²h

πr²(2h) = πr²(H + 2/3 h)

divide both sides by πr²

2h = H + 2/3 h

2h - 2/3h = H

H = 6h - 2h/3

H = 4/3 h

height of cylinder = 4/3 h

8 0
3 years ago
Choose the correct graph of the given systems of equations. y − 2x = −1 2y − x = 4 graph of two lines intersecting at two comma
Serjik [45]

Answer:

Unfortunately, you have not provided the graphs for us to choose from. Hence, we cannot help you. Please refine your question before posting next time.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
What is 0.15 as a fraction
nydimaria [60]

Answer:

.15 of course hhsjdjdjwasting space here dont mind me

5 0
3 years ago
Read 2 more answers
When asked to find a number one-tenth as large as another number, what operation would you use? What about when asked to find a
marishachu [46]
That's question is unknown
8 0
3 years ago
What would be a reasonable estimate for the value of m in 31+m=307
il63 [147K]

31 rounds to 30

307 rounds to 310

30+m≈310

m≈310-30

m≈280

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which mathematical symbol would best fill in the blank to compare the two real numbers 2__1.8
    6·2 answers
  • Can someone help me please .. I NEED HELP ASAP .
    14·2 answers
  • Help ASAP please with this question.
    13·2 answers
  • A horse-drawn carriage travels 47 2/3 kilometers in 4 1/3 hours. At this rate, how many kilometers does it travel per hour? *Wil
    5·1 answer
  • Simplify:<br> (3x-1) (x²-3x+4)
    11·1 answer
  • Mark from least to gratest<br> 3/4, 2/8, 5/6, 3/5
    13·2 answers
  • Steven is researching prices on living room sofas in order to determine what a typical sofa costs. Which statement correctly exp
    14·1 answer
  • Simplify the expression.<br><br> 13 + 6(-3) + (-23)
    5·2 answers
  • The difference of Ellen’s age and her sister Mary’s age is 4 years. Ellen is 5 years less than twice Mary’s age.
    10·2 answers
  • A sweater is 65% wool by weight. If the sweater weighs 12.4 ounces how many ounces of wool is the sweater?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!