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
solmaris [256]
3 years ago
5

A rectangle has an area of 40,if the length and width are doubled. What is the new area ?

Mathematics
2 answers:
MrRissso [65]3 years ago
5 0

160

When you double both the length and width, you are multiplying by 2 twice. Whatever you do to one side of an equation, you have to repeat on the other.

l * w = 40; This is the original equation.

2l * 2w = 40 * 2 * 2; This is when you double the length and the width.

The 2 * 2 on the end can be simplified.

2l * 2w = 40 * 4

Now, simplify 40 * 4.

2l * 2w = 160

So, when you double both the length and the width, you multiply the area by 4, making the area 160.

sweet [91]3 years ago
4 0

Answer:

160

Step-by-step explanation:

e.g. 5×8 --> 10×16 =160

4×10 --> 8×20 =160

2×20 --> 4×40 =160

You might be interested in
Choose the correct translation for the following statement. It is at most ten.
8_murik_8 [283]

Answer:

x ≤ 10

Step-by-step explanation:

3 0
2 years ago
(4.161 x 10^2) + (4.56 x 10^3)
VladimirAG [237]
Convert to stand both expressions to standard form:
416.1 + 4,560

Add:
4,976.1
5 0
3 years ago
A school has an equal amount of boys and girls. You use a coin to simulate the first three students to arrive at school each day
Nimfa-mama [501]

Answer:3/20

Step-by-step explanation:

Heads=Boy

Tails=Girl

If the first 3 students are boys, all 3 coins must be heads.

Because in 3 of these experiments, the coins all land on heads, and there are 20 experiments completed, 3 out of the 20 experiments are 3 boys; 3/20.

3 0
2 years ago
If x represents an even number, which expression represents an odd number?
Sauron [17]
Test the choices !
Pick an even number, and see what each choice does to it.

Let's start with, say,  6 .
We'll try each choice, and see which one produces an odd number:

a).  6 to the 2nd power. . . . . .  6 x 6 = 36.  That's not an odd number.

b).  6 + 3  =  9  This could be it.  9 is odd. We'll save this one.

c).  3·6 = 18.  That's not an odd number.

d).  6/3 = 2.  That's not an odd number.

The only one that gave us an odd number is (b).


3 0
3 years ago
If 20 were added to each of the vlaues in a data set that originally had a standard deviation of 8, the standard deviation of th
Nitella [24]

Answer:

False (I assume it's a true/false question)

Step-by-step explanation:

Standard deviation measures how spread out the data is.  If you add 8 to all the data values, the distribution of data moves to the right (on a graph) 8 units. The shifted data are no more and no less spread out than before.  The standard deviation does not change.

3 0
3 years ago
Other questions:
  • Find the discriminant, describe the types of roots, and find the solution for 3x^2-24x+12
    14·1 answer
  • Which expressions are polynomials? Select each correct answer. 1)Which expressions are polynomials?
    11·2 answers
  • Given that (2x-1)(x+5)=2x^2-mx-5, what is the value of m​
    5·1 answer
  • Steve watched television for three over four hours are Monday and 5/6 hour on Tuesday how many longer did he watch television on
    8·1 answer
  • Simplify the expression . <br><br> A. <br> B. r−1s4<br> C. r−5s4<br> D.
    8·2 answers
  • 180 clockwise around point (0,1)​
    10·2 answers
  • Given f (x) = 1/5 (6 – x)^2 what is the value of f(16)?​
    14·2 answers
  • Write an example that represents the line.<br>Use exact numbers
    8·1 answer
  • Find the height of a parallelogram with a base 24 inches and the area of 432 square inches
    6·1 answer
  • What would be the answer to the math equation e-mc2<br> (It is a subtraction sign) :)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!