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
Misha Larkins [42]
3 years ago
12

Area of Rectangles and Squares. Please show the work, I need help

Mathematics
2 answers:
USPshnik [31]3 years ago
7 0

Here, I think I can help you out:

1. 21 ÷ 3

= 7

Therefore, the length is 7cm².

2. 35 ÷ 7

= 5cm²

- And so on. Simply divide the area by the length of the side given; you can answer up to question six using this strategy.

7. All sides of a square are the same length.

7 x 7

= 49cm²

9. 2 x 3.5

= 7m²

- The formula to find the area of a square/rectangle is length x width. Just multiply the given lengths for the answers :)

spayn [35]3 years ago
5 0

Step-by-step explanation:

Q.1 Solutions

1. Area of rectangle= L×B

21=L×3

21/3=L

7cm Answer

2. Area of square=S×S

35m²=S×7m

35/7=S

5=S

5m Answer

3. Area of rectangle= L×B

5%m²=L×½m

5/½=L

2.5=L

2.5m Answer

4. Area of square= S×S

120mm²=S×10mm

120/10=S

12=S

12mm Answer

5. Area of rectangle= L×B

7%m²=L×1%m

7/1=L

7=L

7m Answer

6. Area of square=S×S

15cm²=S×6cm

15/6=S

2.5=S

2.5cm Answer...

Q.2 Solutions

Note: you might be knowing the formulas so please understand this:

7.49cm

8.400cm

10.86cm

11.40m

12.244m

13.1600m

14.120cm

15.134m

hope it helps!!!!! :) :)

You might be interested in
What's 48 hours ahead from last night at ten? Exact hour pls?
Katena32 [7]
Tomorrow night at ten because 48 hours is two days. So two days from last night at ten.

6 0
4 years ago
Read 2 more answers
Use the graph. What is the slope of the line and what does it tell you about the cost of beads?
KATRIN_1 [288]

B

Because the slope is 3.5 so they cost 3.50 per pound

8 0
3 years ago
Read 2 more answers
The triangles are similar.
dybincka [34]
36/12=3 Which give you the enlargement of the smaller triangle to the bigger one.

You work out the missing side by putting it into an equation:

3(x-10)=39

Then solve it.

First expand the brackets:

3x-30=39

The rearrange to get x on its own and that will be your answer:

3x=39+30
3x=69
x=69/3
x=23
5 0
4 years ago
Read 2 more answers
Label each of the choices below to show whether it is an expression or an equation.
nignag [31]
1:equation
2:equation
3:equation
4:expression
5:expression?
6:expression

6 0
3 years ago
A test to determine whether a certain antibody is present is 99.1​% effective. This means that the test will accurately come bac
satela [25.4K]

Answer:

( a )   Probability that the test comes back negative for all four ​people = .9723

( b ) Probability that t he test comes back positive for at least one of the four ​people = .0277

Step-by-step explanation:

Given

The probability of  the test will accurately come back negative if the antibody is not present  =  99.1\% = .991

The probability of  the test will accurately come back positive if the antibody is not present = .009

Suppose the test is given to four randomly selected people who do not have the antibody .

( a )   Probability that the test comes back negative for all four ​people =

      =  991\times.991\times.991\times.991 = .9723

If we say E = P( all 4 test are negative) or we say E = P( not of the all 4 test are positive)

P( at least one of the 4 test are positive) = 1 - P( not of the all 4 test are positive)  = 1 - P( all 4 test are negative)

( b ) Probability that t he test comes back positive for at least one of the four ​people =  1 - P( all 4 test are negative)

            = 1 - .9723

           =   .0277

7 0
3 years ago
Other questions:
  • Alice spins the spinner 3 times. What is the probability that she spins an A, then a B, and then a C?
    9·1 answer
  • The time until recharge for a battery in a laptop computer under common conditions is normally distributed with mean of 265 minu
    5·1 answer
  • 30 points pls answer
    15·2 answers
  • Tamara is a real estate agent and makes 5% commission on her total sales. She sells a home A) $17
    15·2 answers
  • Please please please help meeeee<br> Factor. 9x2−49y2
    5·2 answers
  • Pls answer this with an explanation if you can pt3
    15·1 answer
  • $63,000 is what percent of $90,000?
    5·2 answers
  • Find how much should be invested to have $14,000 in 10 months at 9.1% simple interest.
    15·1 answer
  • A ruby ring which normally sells for ​$310 is on sale for ​$217. Find the percent markdown for each ring.
    8·2 answers
  • Name a point that is NOT coplanar with G, A, and B
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!