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kirill115 [55]
3 years ago
15

What is the result of subtracting the second equation from the first?

Mathematics
1 answer:
Greeley [361]3 years ago
5 0
8x-4y=-4
4y=5+3x

8x(5+3x) =-4

X= 1/5

4y=5+3 x 1/5

Y=7/5

X=1/5 Y=7/5
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Y=3 csc x how do i solve this
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Which could be the area of a face of the rectangular prism? [Not drawn to scale] 5 m2 6 m2 7 m2 9 m2
masya89 [10]

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8 0
4 years ago
Read 2 more answers
Find the distance between points P(8, 2) and Q(3, 8) to the nearest tenth.
riadik2000 [5.3K]
<span>First of all to calculate the distance between two points we can use distance formula
   
d=Square Root [(x2-x1)^2 + (y2-y1)^2]
   
Now substitute the given points p(x1,y1) and q(x2,y2)in above distance formula
   
The values are X2=3, X1=8and Y2=8and Y1=2.
   
After Substituting the values
   
d=Square Root[(-5)^2+(6)^2]
   
d=Square Root(25+36]
   
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d=7.8
   
7.8 is the distance between points P(8, 2) and Q(3, 8) to the nearest tenth.</span>
7 0
4 years ago
Suppose a simple random sample of size nequals49 is obtained from a population with mu equals 78 and sigma equals 28.
VLD [36.1K]

Answer:

0.0735,0.0179,0.7026

Step-by-step explanation:

Given that a simple random sample of size nequals 49 is obtained from a population with mu equals 78 and sigma equals 28.

Sample size = 49

Population mean = 78

Population std deviation = 28

Std error of sample mean = \frac{\sigma}{\sqrt{n} } \\=4

a) \bar x: N(78, 4)

b) P(\bar x >83.8)\\=0.0735

(by converting to Z and finding value from Z table)

c) P (x overbar less than or equals 69.6 )​

=P(\bar x \leq 69.6)\\=0.0179

d) P (75.8 less than x overbar less than 88 )

=P(75.8

4 0
4 years ago
Need help with number 35.
weqwewe [10]

Answer:

B is correct

Step-by-step explanation:

This is not an example of principle of independence

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3 years ago
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