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Pepsi [2]
2 years ago
9

Roco draws two shapes. one of his shapes is 4 times longer and 4 times wider than the other. he found that the perimeter of the

larger shape is 6 times larger than the perimeter of the smaller shapes and that the area is 16 times larger. is he correct? what did he calculate correctly: area, perimeter or both?
Mathematics
1 answer:
nikklg [1K]2 years ago
5 0

If two squares have different perimeters, the one with the larger perimeter will have a larger area. If two polygons have the same perimeter, then they must have the same shape. If two polygons have the same shape but are different sizes, then they must have different perimeters.

If two squares have equal areas, they will also have sides of the same length. But although "equal areas mean equal sides" is true for squares, it is not true for most geometric figures.

In order to find the perimeter or distance around the rectangle, we need to add up all four side lengths. This can be done efficiently by simply adding the length and the width, and then multiplying this sum by two since there are two of each side length.

Learn more about perimeter at

brainly.com/question/397857

#SPJ4

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Amanda rolled a standar number cube what is the probability of rolling a number less than 7.
sineoko [7]

Answer:

Wouldn't be 100% since all the numbers on a standard number cube are less than 7?

Step-by-step explanation:

8 0
3 years ago
Let Ebe the set of all even positive integers in the universe Zof integers, and XE : Z R be the characteristic function of E.
AnnZ [28]

Answer:

\mathbf{X_E (2) =  1}

\mathbf{X_E (-2) = 0 }  

\mathbf{\{ x \in Z: X_E(x) = 1\}  = E}

Step-by-step explanation:

Let E be the set of all even positive integers in the universe Z of integers,

i.e

E = {2,4,6,8,10 ....∞}

X_E : Z \to R be the characteristic function of E.

∴

X_E(x) = \left \{ {{1 \ if  \ x \ \  is \ an \ element \ of \ E} \atop {0 \ if  \ x \ \  is \ not \ an  \ element \ of \ E}} \right.

For XE(2)

\mathbf{X_E (2) =  1}  since x is an element of E (i.e the set of all even numbers)

For XE(-2)

\mathbf{X_E (-2) = 0 }   since  - 2 is less than 0 , and -2 is not an element of E

For { x ∈ Z: XE(x) = 1}

This can be read as:

x which is and element of Z such that X is also an element of x which is equal to 1.

∴

\{ x \in Z: X_E(x) = 1\} = \{ x \in Z | x \in E\} \\ \\  \mathbf{\{ x \in Z: X_E(x) = 1\}  = E}

E = {2,4,6,8,10 ....∞}

5 0
3 years ago
,please help me solve these 2. problems I am having trouble
Harlamova29_29 [7]
Hi,

1) D

Working :
If the bell rings for 2 weeks straight that means it rings for 14 days.

The bell rings 48 times a day (2 * 24).

The answer is then: 48*14 = 672

2) C

Working:

144 cookies * 8 batches = 864 cookies

864 divided into boxes of 8 = 864 / 8 = 108


4 0
3 years ago
Drew invests $70.00. It earns 50% interest annually.
VladimirAG [237]

Step-by-step explanation:

50% interest annually.

that means he gets 50% interest of the invested capital every year.

and that means he gets 50% of $70 in one year.

70 = 100%

1% = 100%/100 = 70/100 = $0.70

50% = 1%×50 = 0.7 × 50 = $35

he will earn $35 interest in one year.

as you noticed: 50% simply means 1/2 (as 100% stands for the whole).

3 0
1 year ago
Rose has 5 times as many stickers as John. They have 300 stickers in all. How many more stickers does Rose have than John? Show
kirill115 [55]

5x+x=300

6x=300

x=50

5(50)=250 (Rose)

x=50(John)

Rose has 250 stickers and John has 50, therefore Rose has 200 more stickers than John.

6 0
3 years ago
Read 2 more answers
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