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
Romashka-Z-Leto [24]
2 years ago
12

Evaluate the expression for the given value. 3x(x−2), when x=7

Mathematics
1 answer:
Alexeev081 [22]2 years ago
6 0

Answer:

105

Step-by-step explanation:

Substitute X for 7:      3(7)(7-2)

Simplify:                      21(5)

Multiply:                       105

You might be interested in
HELLPP??? i dont understand thisssss
mr Goodwill [35]

Answer:

2 out of 11

2/11

unlikely

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How do I graph this <br>​
disa [49]

Answer:

ight so you put a dot at -2 and then go up like, go up -2 line until you look across and it says 7 and put a dot there

Step-by-step explanation:

7 0
3 years ago
If x=-1\3 is a zero of a polynomial p(x)=27xcube -axsquare -x+3 then find the value of a
antoniya [11.8K]

Answer:

a = 21

Step-by-step explanation:

If x = h is a zero of a polynomial then f(h) = 0, thus

p(- \frac{1}{3} ) = 27( - \frac{1}{3} )³ - a(- \frac{1}{3} ) - (- \frac{1}{3} ) + 3 = 0, that is

27 (- \frac{1}{27} ) - \frac{1}{9} a + \frac{1}{3} + 3 = 0

- 1 - \frac{1}{9} a + \frac{10}{3} = 0 ( multiply through by 9 to clear the fractions )

- 9 - a + 30 = 0

- a + 21 = 0 ( subtract 21 from both sides )

- a = - 21 ( multiply both sides by - 1 )

a = 21

5 0
2 years ago
For what value of x is 1/2 x = -9<br><br> x = 18<br> x= -4<br> x=-18<br> x= -36
Luda [366]

Answer:

x = -18

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other.

Multiply 2 to both sides:

(x/2) * 2 = (-9) * 2

x = -9 * 2

x = -18

x = -18 is your answer.

~

4 0
3 years ago
Read 2 more answers
Choose as many answers as apply.
alexandr1967 [171]

Answer:

  • multiplying a multi-digit number by itself several times (finding the power of a number)
  • finding a square root
  • statistical calculations

Step-by-step explanation:

We don't know what your introduction tells you, but the above-listed operations are ones I choose to use a calculator for. I also use a calculator for ordinary arithmetic, such as division by numbers with 2 digits or more. (It is simply faster and requires no scratch paper.)

If statistical calculations are not done with a calculator, they at least require the availability of suitable tables.

___

All of these operations can be done by hand without a calculator, and were in times passed. Lifetimes of effort were involved in generating some of the original math tables for statistics, trig, logarithms, and other functions readily evaluated using a modern calculator.

3 0
3 years ago
Other questions:
  • What is the measure of ED?
    13·1 answer
  • Please help The weight of a full steel bead tire is approximately 800 grams, while a lighter wheel weighs only 700 grams. What i
    8·1 answer
  • 132 minutes to 5 hours
    9·1 answer
  • What is the solution to this system of equations? 5X + 2y =29 X + 4y=13
    11·2 answers
  • In a village, the cases of a particular infectious
    6·1 answer
  • Based on the lesson, identify the first operation needed to solve the following equation. x/11 - 2 = 3 multiplication subtractio
    10·2 answers
  • Evaluate 8p + 3p - 18
    5·1 answer
  • The midpoints of an irregular quadrilateral ABCD are connected to form another quadrilateral inside ABCD. Complete the explanati
    10·1 answer
  • What’s 384.94 + 17.348
    9·2 answers
  • What is the value of x, y, and z?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!