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1 year ago

Mary saved her money

Mathematics

1 answer:

Murrr4er [49]1 year ago

4 0

130 if you round that to the nearest whole number then you’ll get 139

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Anybody know the answer?

Ilya [14]

Answer:

Step-by-step explanation:

The eqn. of a circle with centre (h,k)and radius ris given by,

6 0

2 years ago

7. The amount of time it takes an athlete to complete a Ninja warrior course is normally distributed with mean 8.25 minutes and

otez555 [7]

The answer is c I think

4 0

2 years ago

3x – 2y = 17 <br> –2x – 5y = 14 <br> Solve using Elimination Please show work

OleMash [197]

Answer:

The solution is x=3 , y=-4 or (3,-4)

Step-by-step explanation:

Given equations (1 and 2) are:

$3x- 2y = 17\\-2x -5y = 14$

To solve a system of equation with elimination method, the co-efficients of one of the variables has to be equated and then the equations are added or subtracted to get an equation in one variable.

Multiplying equation 1 by 2:

$2(3x-2y) = 2*17\\6x-4y = 34\ \ \ \ \ Eqn\ 3$

Multiplying equation 2 by 3

$3(-2x-5y) = 3*14\\-6x-15y = 42\ \ \ \ Eqn\ 4$

Adding equation 3 and 4

$(6x-4y) + (-6x-15y) = 34+42\\6x-4y-6x-15y = 76\\-19y = 76\\\frac{-19y}{-19} = \frac{76}{-19}\\y = -4\\$

Putting y = -4 in equation 1

$3x-2(-4) = 17\\3x+8 = 17\\3x = 17-8\\3x = 9\\\frac{3x}{3} = \frac{9}{3}\\x = 3$

Hence,

The solution is x=3 , y=-4 or (3,-4)

3 0

2 years ago

11. If Sally

Delvig [45]

Answer:

0.2

Step-by-step explanation:

Multiply 4/5 and 1/4: Decimal form

.8 • .25

3 0

2 years ago

Does the relation {(5,-2), (5,-8), (4,-6), (7,-1)} represent a function?

Sergio [31]

Answer:

no, it does not

Step-by-step explanation:

if it was a function, all the x values would've been different, but since 5 is repeated, it is not a function.

5 0

2 years ago