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3 years ago

Which equation has a solution of x = 9?

Mathematics

1 answer:

GaryK [48]3 years ago

7 0

Answer: 2x-3=15

2(9)-3=15
18-3=15

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What was theThere was a pie-eating contest at the county fair. The 10 contestants were given 2 minutes to eat as many pieces of

spayn [35]

Answer: 5.125.

Step-by-step explanation: (1 / 4) + (6 / 8) + 2 + (5 / 8) + (6 / 4) = 5.125.

Hope I helped you.

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3 years ago

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What are the points of trisection of the segment with endpoints (0,0) and (27,27) ?

stiks02 [169]

Given:

Endpoints of a segment are (0,0) and (27,27).

To find:

The points of trisection of the segment.

Solution:

Points of trisection means 2 points between the segment which divide the segment in 3 equal parts.

First point divide the segment in 1:2 and second point divide the segment in 2:1.

Section formula: If a point divides a line segment in m:n, then

$Point=\left(\dfrac{mx_2+nx_1}{m+n},\dfrac{my_2+ny_1}{m+n}\right)$

Using section formula, the coordinates of first point are

$Point\ 1=\left(\dfrac{1(27)+2(0)}{1+2},\dfrac{1(27)+2(0)}{1+2}\right)$

$Point\ 1=\left(\dfrac{27}{3},\dfrac{27}{3}\right)$

$Point\ 1=\left(9,9\right)$

Using section formula, the coordinates of first point are

$Point\ 2=\left(\dfrac{2(27)+1(0)}{2+1},\dfrac{2(27)+1(0)}{2+1}\right)$

$Point\ 2=\left(\dfrac{54}{3},\dfrac{54}{3}\right)$

$Point\ 2=\left(18,18\right)$

Therefore, the points of trisection of the segment are (9,9) and (18,18).

6 0

3 years ago

The sum of 28+29+42=99. So what addition property was used Commutative, associative, identity, or distributive ?

IrinaVladis [17]

28 + 29 + 42 = 28 + 42 + 29 = 99

Commutative property: a + b = b + a

3 0

3 years ago

What is the average of -30 -15 -20 55

defon

Answer:

-2.5

Step-by-step explanation:

-30 + (-15) + (-20) + 55 = -10. Then you divide it by how many numbers there are (4). Which equals - 2.5. If this is wrong, then round up to -3.

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3 years ago

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Tia is making lemonade for a baseball tournament. The recipe calls for 2/3 cup of strawberries for each gallon of lemonade. She

antoniya [11.8K]

Given:

The recipe calls for $\dfrac{2}{3}$ cup of strawberries for each gallon of lemonade.

Tia has 6 cups of strawberries.

To find:

The number of gallons of lemonade she can make.

Solution:

We have,

$\dfrac{2}{3}$ cup of strawberries for = 1 gallon of lemonade

$1$ cup of strawberries for = $\dfrac{1}{\frac{2}{3}}$ gallons of lemonade

= $1\times \dfrac{3}{2}$ gallons of lemonade

= $\dfrac{3}{2}$ gallons of lemonade

$6$ cup of strawberries for = $6\times \dfrac{3}{2}$ gallons of lemonade

= $\dfrac{18}{2}$ gallons of lemonade

= $9$ gallons of lemonade

Therefore, 9 gallons of lemonade she can make by using 6 cups of strawberries.

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3 years ago