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4 years ago

Find the area of the rhombus

Mathematics

1 answer:

fenix001 [56]4 years ago

7 0

Check the picture below.

since in a rhombus the diagonals bisect each other, thus EC = EA.

now, the rhombus is simply 4 congruent triangles, we know the base and height of one of them, thus

$\bf \textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh~~ \begin{cases} b=8\\ h=15 \end{cases}\implies A=\cfrac{1}{2}(8)(15)\implies A=60 \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{area of all 4 triangles}}{4(60)\implies 240}$

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I also need help with this one

icang [17]

It is c.

explanation:

20+130+h =180

when you solve you get h=50

130+g = 180

g= 50

50+60+f = 180

f=70

7 0

3 years ago

Read 2 more answers

Question

Mademuasel [1]

Answer: F

Step-by-step explanation:

This does not have infinitely many solutions (adding the equations, we get a fixed value of x)
This has no solutions (the left hand sides are the same but the right hand sides have different values)
This has one solution (the first equation givess a fixed value for x)
This has no solutions (same reason as 2)
This has one solution (same reason as 3, just the second equation instead of the first)
This has infinitely many solutions (multiplying both sides of the top equation by -2 gives the bottom equation).

6 0

3 years ago

What is the Growth/Decay Factor?

Stels [109]

Answer:

Growth/Decay Factor = -6

Step-by-step explanation:

Hi there!

To find the growth/decay factor (<em>m</em>), we can use the following formula:

$m=\displaystyle\frac{y_2-y_1}{x_2-x_1}$ where two given points are $(x_1,y_1)$ and $(x_2,y_2)$

Plug any two of the given points in the table (below, you can see that I used (2,3) and (1,9):

$m=\displaystyle\frac{3-9}{2-1}\\\\m=\displaystyle\frac{-6}{1}\\\\m=-6$

Therefore, the growth/decay factor is -6.

I hope this helps!

8 0

3 years ago

Tom Brown decided to purchase a new bike on an installment loan. The bike was $300.00. He agreed to pay $30 a month for 12 month

Anna11 [10]

Answer:

$60

Step-by-step explanation:

I got this bc 12*30=360 and 360-300=60

3 0

3 years ago

Read 2 more answers

At Friday's football game, 1,294 tickets were sold for a total amount of $8,816.00. If each student ticket costs $5.00, and each

NeTakaya

Answer:

512 student tickets.

Step-by-step explanation:

Let x be number of student tickets and y be number of adult tickets.

We have been given that at Friday's football game 1,294 tickets were sold. We can represent this information as:

$x+y=1294...(1)$

We are also told that each student ticket costs $5.00, and each adult ticket costs $8.00 and 1,294 tickets were sold for a total amount of $8,816. We can represent this information as:

$5x+8y=8,816...(2)$