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Digiron [165]
3 years ago
8

I need help number 13 and 14, how can I find x?

Mathematics
1 answer:
Alex73 [517]3 years ago
7 0
#13.
x = 50

#14
x = 142
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What is the midpoint of the class 15-20
Furkat [3]
More data can be applied to the frequency distribution table. You can measure the "midpoint" (or "class mark") of each class as: Midpoint = Lower class limit + Upper class limit 2 . . The proportion of the data that falls in that class is the "relative frequency" of each class.
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3 years ago
For what values of x and y must each figure be a parallelogram?
Illusion [34]

Answer:

x=11,y=10.

Step-by-step explanation:

The diagonals of a parallelogram bisect each other.

We can form an equation in x and y using this property.

2y+2=2x

and x+9=2y.

Solving the second  equation for x ,

x=2y-9.

Substituting x value in 2y+2=2x

2y+2=2(2y-9)

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Adding 18 both sides:

2y+20=4y.

Subtracting 2y both sides

20=2y.

Dividing both sides by 2:

y=10.

x=2y-9

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4 0
3 years ago
Read 2 more answers
Next 4 multiples of 1/6
solniwko [45]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Find an equation for the nth term of the arithmetic sequence. <br> -3, -5, -7, -9, ...
tankabanditka [31]

Answer:

a(n) = -3 - 2(n-1)

Step-by-step explanation:

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Here a(1) = -3 and c = -2.

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7 0
3 years ago
How much money has to be invested at 2.3% interest compounded continuously to have $41,000 after 17 years?
Llana [10]
For this, we have to calculate how much money has to be invested at 2.3% interest compounded continuously to achieve $41,000 after 17 years

Formula: A= P * ( 1+r)^t
A= $41,000
r=0.023
t= 17
<span>41,000= P * (1+0.023)^17
</span>41,000= P * (1.023)^17
41,000= P * 1.4719
P= 41,000 : 1.4719
P= $27,731.59
Therefore, the answer is C. $27,731.59 
I checked by doing the opposite, and I got $41,000.01, which is the closest to the question<span>
</span>
7 0
3 years ago
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