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Murrr4er [49]
3 years ago
10

What's the area of the quadrilateral ​

Mathematics
2 answers:
shepuryov [24]3 years ago
5 0

Answer: Use the formula (base1+base2)/2 multiplied by height(3 in)

Step-by-step explanation: I can't see what the bottom base is, but lets say it is 12. 5+12=17, and 17/2=8.5. 8.5*3=25.5

Answer:25.5

Sloan [31]3 years ago
4 0
The area will be 2.125 inches. The equation of a trapezoid is A= h(a+b)/2 making the equation of this quadrilateral be .25(5+12)/2.
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Which ratio is not equivalent to 3/5 ? <br>A. 15/20 <br>B.6/8 <br>C.30/50 <br>D.12/20
vova2212 [387]

Answer:

A & B

Step-by-step explanation:

15/20 is not equal

6/8 is not equal

30/50 is equal

12/20 is equal

8 0
2 years ago
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A system of equations is shown below: Equation A: 4c = d – 8 Equation B: c = 5d + 8 Which of the following steps should be perfo
ozzi
You would want to multiply equation a by -5 so you can eliminate by addition
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Which card would cost you the least and by how much? If a credit card company A offers a 2% rebate for all purchases during the
olga2289 [7]
Card A:
<span>$4,350  x 0.02 = $87
</span><span>$360  - $87 = $273

Card B:
Interest $270 no rebate

so $273 - $270 = $3

Card B cost least and $3 less than card A</span>
8 0
3 years ago
What are the solutions of the quadratic equation 49x^2=9?
Flauer [41]
<span>Simplifying 49x^2 + -9 = 0
Reorder the terms: -9 + 49x^2 = 0
Solving -9 + 49x^2 = 0 Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '9' to each side of the equation. -9 + 9 + 49x^2 = 0 + 9
Combine like terms: -9 + 9 = 0 0 + 49x^2 = 0 + 9 49x^2 = 0 + 9
Combine like terms: 0 + 9 = 9 49x^2 = 9
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5 0
3 years ago
A marching band is arranged in rows of 7 the first row has 3 band members and each row after the first has 2 more band members t
pav-90 [236]

Answer:

a_{n}= 1+2n and 63

Step-by-step explanation:

the question belongs to arithmetic sequence and a_{n} can be determined by the formula

a_{n}= a1 + d (n-1)

Let " a_{n} " represents the number of band members in the nth row

and 'd' represents the common difference.( as stated each row  has 2 more band members than the row before it)

therefore, d=2

'a1' represents first row that has three members. So, a1 = 3

->Rule for nth term will be:

a_{n}= 3 + 2(n-1)

a_{n}= 3 + 2n -2

a_{n}= 1+2n

-> In order to find total number of band members 'S_{7}'

Let S_{n} represent total number in n rows

We'll use the formula, i.e  S_{n} = n/1 (a_{1} +  a_{n})

where, n is the number of terms, a_{1} is the first term and a_{n} is the last term

So,

n=7

a_{7} = 1 + 2(7)= 15

=>S_{7} = 7/2 (3 + 15)

S_{7} = 63

The total number of band members are 63

8 0
3 years ago
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