All categories

4 years ago

Help me pleaseeeeeeeeeeeeeeeeee

Mathematics

1 answer:

dem82 [27]4 years ago

8 0

Hello:
Increase in length is : (30×10)/100 =3 cm
Increase in width is : (20×5)/100 = 1 cm
the new length is : 30 cm+3cm =33 cm
the new width is : 20cm+1 cm =21 cm
the perimeter is : 2(20+30) = 100 cm
the new perimeter is : 2(33+21) = 108 cm
the pourcentage increase in the perimetr is : 8%
108 =100/100+8/100=1+8/100

You might be interested in

A plot of land is 3/8 mile by 2 1/4 miles. Spencer solves 3/8•2 1/4 to find the area of the land in square miles. Enter numbers

Marina CMI [18]

9514 1404 393

Answer:

Step-by-step explanation:

The number 2 1/4 is split into the sum 2 + 1/4, then multiplied by 3/8. This gives ...

$\displaystyle\frac{3}{8}\cdot2\frac{1}{4}=\left(\frac{3}{8}\cdot\boxed{2}\right)+\left(\frac{3}{8}\cdot\frac{1}{4}\right)\\\\=\frac{6}{8}+\frac{3}{\boxed{32}}=\frac{24}{32}+\frac{3}{32}=\frac{24+3}{32}\\\\=\frac{\boxed{27}}{32}$

_____

Of course, fractions are multiplied in the usual way:

$\dfrac{a}{b}\cdot\dfrac{c}{d}=\dfrac{ac}{bd}$

8 0

3 years ago

Please Help I'll Give Brainliest To Whoever Answers It Right

Shalnov [3]

Answer:

2nd one

Step-by-step explanation:

sorry if that is incorrect it should be right though

5 0

3 years ago

Marie has 5 apples, Toby takes 2 away. How many does he have less?

Natali [406]

Answer:

2less apples

Step-by-step explanation:

5-2=3. 3+2=5

8 0

4 years ago

Read 2 more answers

What does it mean if an x (input) or y (output) value doesn't make sense? What does it look like on a graph? What happens in the

sesenic [268]

Answer:

It is not a function.

Step-by-step explanation:

If the x input or the y output in the given equation have no meaning or does not have any sense, then it will not form a function. We need to see if there are two of the x - intercept which are same. Then the graph will be a straight vertical line. Also the slope of the function cannot be determined.

6 0

3 years ago

How do you solve this please give steps

balu736 [363]

Answer:

Step-by-step explanation:

they are a linear pair so x + 2x + 21 = 180 so you subtract 21 from both sides, combine x and 2x then divide by 3 to get 53

7 0

4 years ago

Read 2 more answers