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
wolverine [178]
3 years ago
6

The dimensions of a 7 -cm by 2 -cm rectangle are multiplied by 3 . how is the area affected ?

Mathematics
1 answer:
Alecsey [184]3 years ago
4 0
Let's figure this out by first finding the dimensions of the original rectangle, and then finding the dimensions of the new rectangle.

Original rectangle:  Since the area of a rectangle is the length * width, the area of this rectangle is 7 * 2 = 14 square cm.

New rectangle: The new dimensions of this are 7*3 = 21 cm by 2*3 = 6 cm.  To find the area, we multiply these two together.  21*6 = 126 square cm.

126 is 9 times greater than 14, so the area will be multiplied by 9.
You might be interested in
Answer the following question and explain how you got your answer:<br> 8(x-5)+7(3x+4)=
Mariulka [41]

Answer:

29x - 12

Step-by-step explanation:

Step 1: Use the distributive property

8(x-5) + 7(3x+4)

= 8x - 40 + 21x + 28

Step 2: Combine like terms

= 29x - 12

5 0
3 years ago
48+2x a la 2 -x a la 4
galben [10]

Answer: −a5lx+2a3lx+48 (assuming that the a and the la are variables)

Step-by-step explanation:

48+2xala2−xala4

=48+2a3lx+−a5lx

=−a5lx+2a3lx+48

3 0
3 years ago
Macy walked and jogged a total of 4 1/9 miles in Central Park today. If she jogged a distance of 2 2/3 miles, how many miles did
lianna [129]
6 7/9 of a mile is what she walked
7 0
3 years ago
A turkey cost $1.05 per pound. There are going to be 15 people at the Thanksgiving dinner. Plan for each person to eat two, 3/8
lina2011 [118]

Answer:

It will take 135 minutes or 2 hours and 15 minutes

Step-by-step explanation:

What we need here is to get the total

amount in pounds of turkey to be cooked

each person eats 3/8 pound servings

Total pound per person would be 3/8 * 2 = 3/4 pound servings

From what we have, there are 15 people at the dinner,

The total pounds to cook will be

15 * 3/4 = 45/4 pounds

Per pound of turkey, it takes 12 minutes

For 45/4 pounds, it will take

45/4 * 12 = 135 minutes

Let us convert this to hours

That will be 2 hours and 15 minutes

7 0
3 years ago
If f(x) = x2 − 1, and f(2a) = 35, then what could be the value of a ?
Naily [24]
<span>f(x)=<span>x2</span>−1</span>That means to find the value of the function at any value of x, we square x and subtract 1. If <span>x=2a</span>, we square <span>2a</span> and subtract 1:<span>f(2a)=(2a<span>)2</span>−1=4<span>a2</span>−1</span>Now, we know that <span>f(2a)=35</span>so we can find the value of a:<span>f(2a)=(2a<span>)2</span>−1=4<span>a2</span>−1=35</span><span>4<span>a2</span>−1+1=35+1</span><span>4<span>a2</span>=36</span><span><span>a2</span>=9</span><span><span>a=±3</span></span>
5 0
3 years ago
Other questions:
  • In the smoky mountains of Tennessee, the percent of moisture that falls as snow rather than rain is approximated by P = 10.0 ln
    15·1 answer
  • Serena drank nine and six tenths ounces of juice yesterday.Four and seventy-five hundreths ounces of the juice were apple juice.
    9·1 answer
  • What is the range of 22, 22, 27, 29, 30, 34, and 38?
    8·2 answers
  • Can someone help me with this? I will mark you as brainliest!
    10·1 answer
  • What is (x-10)+(3x-6)
    6·2 answers
  • Kiran says that -2 &lt; -5. Do you agree with Kiran? Explain or show your reasoning.
    14·1 answer
  • PLEASE HELP FOR ENVIROMENTAL SCIENCE!!!
    12·1 answer
  • 5.
    11·1 answer
  • HELP ME OMG PLEASEEEEEEEEEEEEE
    6·2 answers
  • Find parametric equations and a parameter interval for the motion of a particle that starts at and traces the circle a. once clo
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!