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zimovet [89]
3 years ago
15

The area and perimeter of parallelogram

Mathematics
1 answer:
adoni [48]3 years ago
6 0
Triangles ADE and CDF are similar,  so:-
10/12 = 15/CD
CD = (12*15) / 10 =  18 cm  = AB = base of the parallelogram

Area of the parallelogram = base * height = 18 *10 = 180  cm^2 (answer)

(b)  The perimeter:-
AD = CB = 15 (opposite sides are equal)

Perimeter = 2*18 + 2*15 = 36 + 30 = 66 cm (answer)

 
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A flower shop sells tulips and roses. The price of each tulip is the same and the price of each roses the same. One customer bou
Talja [164]

Answer: it cost a customer $7.25 to buy five tulips and $10.5 to buy six roses.

Step-by-step explanation:

Let x represent the cost of 1 tulip.

Let y represent the cost of 1 rose.

The price of each tulip is the same and the price of each roses the same. One customer bought seven tulips and nine roses for $25.90. This means that

7x + 9y = 25.9 - - - - - - - - - - - - - - 1

Another customer bought for four tulips and eight roses for $19.80. This means that

4x + 8y = 19.8- - - - - - - - - - - - - - - 2

Multiplying equation 1 by 4 and equation 2 by 7, it becomes

28x + 36y = 103.6

28x + 56y = 138.6

Subtracting, it becomes

- 20y = - 35

y = - 35/ - 20

y = 1.75

Substituting y = 1.75 into equation 2, it becomes

4x + 8 × 1.75 = 19.8

4x + 14 = 19.8

4x = 19.8 - 14 = 5.8

x = 5.8/4

x = 1.45

The cost of 5 tulips would be

1.45 × 5 = $7.25

The cost of 6 roses would be

1.75 × 6 = $10.5

7 0
3 years ago
REALLY EASY POINTS <br> - <br> What are the values of a positive attitude?
faltersainse [42]

Answer:

3 values of postivity is Optimistim, Kindness, and an open mind/Growth mind set.

Step-by-step explanation:

8 0
2 years ago
The scatter plot shows the relationship between the test scores of a group of students and the number of hours they spend on soc
kolbaska11 [484]
First I let's represent our data in the table and make a scatter plot ( i attached the image).
\begin{tabular}{ll} x & y \\ 0.5 & 100 \\ 2 & 100 \\ 1 & 95 \\ 3 & 85 \\ 3 & 78 \\ 5 & 75 \\ 5 & 72 \\ 6 & 70 \\ 6 & 98 \\ 7 & 60 \\ \end
Points labeled A are called data set.
Point labelled B is called the outlier. The outlier is a point that does not fit well with the rest of our data set. Posible reason for point B is that someone is super smart and they don't need to spend a lot of time studying to achieve good results.
PartB
We can see from the graph that the number of hours spent on social media and test scores are negatively correlated. See a scatter plot, I added the trend line.
In other words, the more hours you spend on social media the lower your test scores should be.



7 0
3 years ago
Read 2 more answers
Please answer this correctly
miv72 [106K]

Answer: shade 85 squares

Step-by-step explanation:

34/40

convert that to a percentage

it will be 85%

there are 100 squares in the grid , so you shade 85 of them

4 0
4 years ago
Handsome Jack is buying a pony made of diamonds. The price of the pony is PPP dollars, and Jack also has to pay a 25\%25%25, per
Nadya [2.5K]

Answer:

<em>B: P + 0.25 P</em>

<em>D : 5/4 P</em>

Step-by-step explanation:

The price is P.

The tax is 25% of P, or 0.25P.

The total price is the price plus the tax,

P + 0.25P = P + 1/4P = 4/4P + 1/4P = 5/4P

7 0
3 years ago
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