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
Rasek [7]
3 years ago
10

Which expression is equal to (7 × 2) × 2?

Mathematics
2 answers:
Debora [2.8K]3 years ago
5 0
The answer is C. 7 x ( 2 x 2 )
Sever21 [200]3 years ago
4 0

Answer:

C

Step-by-step explanation:

You might be interested in
Q and r are independent events. if p(q) = 1/4 and p(r)=1/5, find p(q and r)
klasskru [66]

Answer:

(b) \frac{7}{30}

Step-by-step explanation:

When two p and q events are independent then, by definition:

P (p and q) = P (p) * P (q)

Then, if q and r are independent events then:

P(q and r) = P(q)*P(r) = 1/4*1/5

P(q and r) = 1/20

P(q and r) = 0.05


In the question that is shown in the attached image, we have two separate urns. The amount of white balls that we take in the first urn does not affect the amount of white balls we could get in the second urn. This means that both events are independent.


In the first ballot box there are 9 balls, 3 white and 6 yellow.

Then the probability of obtaining a white ball from the first ballot box is:

P (W_{u_1}) = \frac{3}{9} = \frac{1}{3}

In the second ballot box there are 10 balls, 7 white and 3 yellow.

Then the probability of obtaining a white ball from the second ballot box is:

P (W_{u_2}) = \frac{7}{10}

We want to know the probability of obtaining a white ball in both urns. This is: P(W_{u_1} and W_{u_2})  

As the events are independent:

P(W_{u_1} and W_{u_2})  = P (W_{u_1}) * P (W_{u_2})

P(W_{u_1} and W_{u_2})  = \frac{1}{3}* \frac{7}{10}

P(W_{u_1} and W_{u_2})  = \frac{7}{30}

Finally the correct option is (b) \frac{7}{30}

3 0
3 years ago
The price of an item yesterday was $160 . Today, the price fell to 104 . Find the percentage decrease.
babymother [125]
The percentage drop would be 35%
6 0
3 years ago
I need help please ​
ElenaW [278]

Answer:

L = 25

Step-by-step explanation:

Let's call the Length x and width x - 15 since the width is 15 less than length

Eric needs 70 of fencing in total, the perimeter of a rectangle is calculated by adding all sides

x + x + (x - 15) + (x - 15) = 70 add like terms

4x - 30 = 70 add 30 to both sides

4x = 100 divide both sides by 4

x = 25

8 0
2 years ago
Read 2 more answers
Miguel's scooter can travel at a maximum speed of 45 miles per hour. Which inequality models all the speeds, at which Miguel's s
Iteru [2.4K]

Answer:

I can't put the symbol in but less then or equal to 45mph

Step-by-step explanation:

4 0
3 years ago
Select the correct answer from the drop-down menu. Consider this system of linear equations: y − x = -13 -4x + 3y = -51 The solu
Nookie1986 [14]

Answer:

b

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Which angle is supplementary to DFA?​
    8·1 answer
  • Find the domain of fg
    6·2 answers
  • A student took a test which had 6 questions. He would score 8 points on the test if all his answers are correct. If y represents
    5·2 answers
  • What is an equivalent expression for 4y plus y
    11·1 answer
  • (3x - 5)+(7x + 5)=90 fine the value of x<br>​
    13·2 answers
  • Find volume with full working out ty
    14·1 answer
  • Ben used 325 centimeters of ribbon to trim banners he made. How many meters of ribbon did he use?
    12·2 answers
  • Which relation is a function?<br> A: a circle <br> B: a Y<br> C: a C<br> D: a line
    5·1 answer
  • A baby elephant weighs 1400 pounds, which is 7,437 pounds less than her mother. Write an equations to express the weight of the
    12·2 answers
  • Louise sold 391 soft pretzels. If she sold them in groups of 17 soft pretzels, how many groups did she sell?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!