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
elena-14-01-66 [18.8K]
3 years ago
6

2/3 Marks 67 / 138 Marks If a = -3, find the value of a) 2a b) a ^2 c) 3a^2

Mathematics
1 answer:
sergey [27]3 years ago
6 0

Answer:

- 6, 9 and 27

Step-by-step explanation:

Substitute a = - 3 into the expressions and evaluate

(a)

2a = 2(- 3) = - 6

(b)

a² = (- 3)² = 9

(c)

3a² = 3(- 3)² = 3(9) = 27

You might be interested in
10 to the power of 5. may someone help me
VMariaS [17]
You would do 10x10x10x10x10, so it would be 100,000. So you're correct, nice job! 
8 0
3 years ago
Read 2 more answers
In quadrilateral PQRS, m∠RQS = 25° and PS = QR. What measure of ∠PSQ would confirm that PQRS is a parallelogram?
katrin [286]

Answer:

  25°

Step-by-step explanation:

If sides PS and QR are parallel, then ∠PSQ and ∠RQS are alternate interior angles, hence congruent. That is, ∠PSQ ≅ ∠RQS = 25°.

_____

<em>Comment on the problem statement</em>

Confirming that two sides are parallel does not confirm the figure as a parallelogram. It could be a trapezoid. The given condition is necessary, but is not sufficient to do the confirmation.

6 0
3 years ago
Classify the system of equations and identify the number of solutions.
LuckyWell [14K]

Answer:

...

Loading...

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
You a Miguel Cervantes de Navas y Colon, captain in the Royal Spanish Army in Seville in the year 1842. Outside your barracks wi
djverab [1.8K]

<u>650 cannonballs </u>

Explanation step by step:

upper layer = 1 ^ 2

second layer = 2 ^ 2

third layer = 3 ^ 2

layer 12 is 12 ^ 2

<u>The formula is: </u>

<u>n * (n + 1) * (2n + 1) / 6 </u>

<u>n = 12 </u>

<u>12 (12 + 1) (2 * 12 + 1) / 6 </u>

<u>12 * 13 * 25/6 = </u>

<u>650 </u>

<u> </u>

There are 650 cannonballs in this pyramid.

5 0
3 years ago
Read 2 more answers
Someone please help me answer this!!
steposvetlana [31]

Answer:

10 units is the answer.

Step-by-step explanation:

points are (-3,2) and (-9,-6)

Pythagorean theorem can be written as,

d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{(-9-(-3))^2 + (-6-2)^2}\\\\d=\sqrt{(-6)^2+(-8)^2} \\\\d=\sqrt{36+64} \\\\d=\sqrt{100} \\\\d=10

∴ distance between the points = 10 units

4 0
3 years ago
Other questions:
  • Mr. Naxvip wrote the expression below to represent the number of
    7·1 answer
  • Hello people of the world whats 2+2
    13·2 answers
  • From a group of 6 girls and 7 boys, how many 5-member committees consist of: members of the same gender?
    11·1 answer
  • The rate of the jet stream is 100 miles per hour. Traveling with the jet​ stream, an airplane can fly 1200 miles in the same amo
    5·1 answer
  • What is the symbolic representation for this argument
    6·1 answer
  • Lisa plans to watch 3 movies each month. Write an equation to represent the total number of movies n that she will watch in m mo
    12·2 answers
  • Please answer and explain asap​
    12·2 answers
  • the length of the side of one triangle is 4 times that of the length of the similar triangle find the ratio of their area
    6·1 answer
  • Find the slope of every like that is perpendicular to the graph of the equation.
    13·1 answer
  • Use inductive reasoning to find the 10th term in the sequence 5, 8, 11, 14, ...
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!