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PilotLPTM [1.2K]
4 years ago
6

Which ordered pair is a solution of the equation y=-2x-5

Mathematics
1 answer:
EastWind [94]4 years ago
3 0

neither would apply to this equation

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Please help me!!!!
stellarik [79]
Hello!

For #1, the LCD is (A) 12 since both numbers go into 12 as their minimal number.

For #2, the missing number is (B) 4 because 1/4*4/4=4/16.

For #3, the answer is (B) 3 because you have to crossmultiply 20n(4*15) to find the answer.

for #4, the correct answer is (A) 4/5 is less than 5/6 because when converted into fractions with a common denominator, 24/30 is less than 25/30.

For #5, the LCD is 36; therefore, the answer is (A) because the fractions in the answer are properly converted to their new denominator.

I really hope I helped!

7 0
4 years ago
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The graph shows the amount of money paid when purchasing bags of peanuts at the zoo:
Mumz [18]
The constant of proportionality would be "4"  ... proportional relationships are in the form of y = kx..  so in your ordered pairs, you can see that to get the 'y' coordinates you would have to multiply the 'x' coordinates by 4.
5 0
3 years ago
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I need to find the area. (please help me quick & the answer and explanation plz) POINTS: 15! please give real answers!!!!
densk [106]

Answer: 12.9

Step-by-step explanation:

lThe area of the triangles is 3/2 x 2.6 = 3.9/2 = 1.95. since there is 2 triangle do 1.95 x 2 = 3.9. and the area of the square is 3x3 = 9. All in all, 3.9 + 9 = 12.9.

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6 0
3 years ago
Consider the following sample data for two variables. x y 7 7 8 5 5 9 3 7 9 7 Calculate the sample covariance. b. Calculate the
Semmy [17]

Answer:

a) Sample co-variance = -1.5

b) Sample correlation = -0.4404152

c) Weak negative relationship between X and Y.

Step-by-step explanation:

a) by sample co-variance = sum ((x - xbar)* (y-ybar)/n-1

#.... use the following program in R

x = c(7,8, 5, 3, 9)

y = c(7,5,9,7,7)

sv = sum((x-mean(x))*(y-mean(y)))/4

cor(x,y)

####################################

4 0
3 years ago
Determine whether b is in the column space of A. If it is, then write b as a linear combination of the column vectors of A. (Use
mihalych1998 [28]

Answer:

b=(13/4, -27/4, -4)

Step-by-step explanation:

A.x=b

x=(a, b, c)

a   - b + 2c = 2

3a + b +  0 = 3

0  + 0 +  c = -4

solving this system

c=-4

a-b=10, 3a+b=3

a=10+b, 3(10+b)+b=3

b=-27/4

a=10-27/4

a=13/4

7 0
4 years ago
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