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3 years ago

Which description best represents the equation 25x + 50 = y

Mathematics

1 answer:

kherson [118]3 years ago

5 0

Answer:

25x-y=-50

Step-by-step explanation:

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Line a is formed by using the points -1,6 and 3,-2 Line B is formed by using the point -3,0 and 5,4.What linear equations can be

emmasim [6.3K]

Answer:

y = -x + 5

y = x/2 + 3/2

Step-by-step explanation:

First we calculate the slope as difference between coordinates

a) P₁ ( -1 , 6 ) P₂ ( 3 , 2 )

m = Δy/Δx ⇒ m = ( y₂ - y₁ ) / ( x₂ - x₁ ) ⇒ m = (2 -6 ) / (3 -(-1))

m = -4 /4

m = -1

Now we have:

y - y₁ = m ( x - x₁ ) ⇒ y - 6 = (-1) ( x - (-1))

y - 6 = -1 * ( x + 1 ) ⇒ y - 6 = - x - 1

y = -x + 5

In the second case

Q₁ ( -3 , 0 ) Q₂ ( 5 , 4 )

Again we calculate the slope

m = Δy / Δx ⇒ m = ( 4 - 0 ) / ( 5 - (-3)) ⇒ m = 4 / 8 ⇒ m = 1/2

m = 1/2 or x = 0,5

And

y - y₁ = 1/2 ( x - x₁ ) ⇒ y - y₁ = 1/2 ( x - (-3)) ⇒ y - 0 = 1/2 * x + 3/2

y = x/2 + 3/2

6 0

3 years ago

Is 6/12 and 15/30 proportional?

sveticcg [70]

Answer:

yes

Step-by-step explanation:

6 is half of 12. 15 is half of 30. The ratios are equal, so the fractions are proportional.

Answer: yes

Also, you can reduce both fractions.

Divide the numerator and denominator of 6/12 by 6 to get 1/2.

Divide the numerator and denominator of 15/30 by 15 to get 1/2.

Since both fractions reduce to 1/2, 6/12 and 15/30 are equivalent fractions and are proportional.

5 0

3 years ago

Thirteen people on a softball team show up for a game. a)How many ways are there to choose 10 players to take the field? b)How m

marishachu [46]

Answer:

a) 286

b) 1,037,836,800

c) 285

Step-by-step explanation:

a) Since order is not important, the total possible number of ways to choose 10 players out of 13 is the following combination:

$C(13,10)=\frac{13!}{(13-10)!10! } \\C(13,10)=\frac{13*12*11*10!}{(3*2*1)10! }\\C(13,10) = 286$

b) The total number of possibilities to assign positions by the selecting 10 players is the permutation of 13 players for 10 positions:

$P(13,10) = \frac{13!}{(13-10)!}\\P(13,10) = 13*12*11*10*9*8*7*6*5*4\\P(13,10) =1,037,836,800$

c) The number of ways to pick 10 players including at least one woman is equal to the total number of ways to pick 10 players (found in item a) minus the the number of ways to pick 10 players without picking a single woman.

Since there 10 male players for 10 positions, there is only one possible way to pick a team without women, therefore:

$P=286-1 =285$

6 0

3 years ago

How do I solve x+(2x-4)=11

nadya68 [22]

<span>x+(2x-4)=11

Answer is x=5.</span>

6 0

3 years ago

Read 2 more answers

Can someone plz help me dont know the awnser

Bumek [7]

The area of the right triangle = $\frac{1}{2}bh$

b = base = SV = 12.3
h = hight = HL = 24.6
A = area
$\frac{1}{2}bh = A$
$\frac{1}{2}(12.3)(24.6) = 151.29$

4 0

3 years ago