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4 years ago

Help please multiple choice.......

Mathematics

1 answer:

Digiron [165]4 years ago

3 0

If you are trying to eliminate the y, then both of the numbers in front of the y have to be the same, but one needs to be negative and the other positive.

The easiest way to do this is multiply the top equation by 3, so you'd get -6y for the top and you could cancel it out with the +6y on the bottom.

D. Multiply the top equation by 3.

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MIRCrence.

lianna [129]

Ok so maybe add or subtract the numbers and see what u get :) I calculated it

7 0

3 years ago

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I round to 900 I have twice as many hundreds as ones and all my digits are different but their sums are 18 can someone answer th

stellarik [79]

Answer:

The number of once is 9.1

The number of hundreds is 8.9

Step-by-step explanation:

Given as :

The total of digits having ones and hundreds = 900

The sum of digits = 18

Let The number of ones digit = O

And The number of hundreds digit = H

So, According to question

H + O = 18 .........1

100 × H + 1 × O = 900 ........2

Solving the equation

( 100 × H - H ) + ( O - O ) = 900 - 18

Or, 99 H + 0 = 882

Or , 99 H = 882

∴ H = $\frac{882}{99}$

I.e H = 8.9

Put the value of H in eq 1

So, O = 18 - H

I.e O = 18 - 8.9

∴ O = 9.1

So, number of once = 9.1

number of hundreds = 8.9

Hence The number of once is 9.1 and The number of hundreds is 8.9

Answer

4 0

4 years ago

The basketball coach at a small local college believes that his team plays better and scores more points in front of larger crow

Orlov [11]

Answer:

Step-by-step explanation:

Given that points scored is the dependent variable Y and Number of people attending the game is the independent variable is independent variable x

The correlation coefficient, slope and intercept are calculated as shown below:

x y

378 54

350 57

320 59

478 80

451 82

250 75

489 73

451 53

410 67

215 78

113 67

250 56

450 85

489 101

472 99

Mean 371.0666667 72.4

std dev 117.5138087 15.42632259

covariance 667.5733333

r 0.394558035

Slope 3.005642934

Intercept 153.4581182

y = 3.006x+153.46 is the regression line.

Corre = 0.3945 (weak positive)

8 0

3 years ago

f a bag contains 10 red, 6 yellow, 24 blue, and 8 white balloons, what is the part-to-whole ratio of blue balloons to all balloo

pantera1 [17]

1 to 2 1:2 1/2 this should help you!

3 0

3 years ago

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Tyler is 5 years younger than three times his cousin Lejla's age. Tyler is 40 years old.

Brut [27]

Answer:

I times 3-5

Step-by-step explanation:

Their are other ways to do it

Sorry if it is not the answer you were looking for.

3 0

3 years ago

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