GIRL GIRL GIRL
GIRL GIRL BOY
GIRL BOY GIRL
GIRL BOY BOY
BOY GIRL GIRL
BOY GIRL BOY
BOY BOY GIRL
BOY BOY BOY
So the change that the Griswalds have 3 boys (BOY BOY BOY) is 1/8
You can write the equation using slope-intercept form, which is y = mx + b, where m is slope and b is the y-intercept.
y = mx + b Plug in the slope and y-intercept
y = 1/3x + 4
See the attached image to have a look at how the corresponding sides pair up
The red sides pair up to form the ratio (x-3)/2.5
The blue sides pair up to form the ratio 8/2
The similar figures mean that the two ratios are equal
(x-3)/2.5 = 8/2
2(x-3) = 2.5*8
2x-6 = 20
2x = 26
x = 13
Side note: Solving 40 = 4x-12 should lead to 52 = 4x which means x = 13. You subtracted 12 from both sides instead of adding 12 to both sides.
Let x be the number of pizzas purchased. For each card, write an expression for the amount of money left on the card after purchasing x pizzas.
For Keith
Keith received a gift card of $90 for a pizza restaurant. The restaurant charges $15 per pizza.
x numbers of pizza costs = $15x
Hence, the amount of money left on Keith's card after purchasing x pizzas =
$90 - $15x
For Mary,
Mary received a gift card of $110 for a different pizza restaurant. The restaurant charges $20 per pizza.
Hence, x number of pizzas cost =$20 × x
= $20x
Therefore, the amount of money left on Mary's card after she buys x pizzas =
$110 - $20x
Amount of money left on Keith's card in dollars = __________
Amount of money left on Mary's card in dollars=____________
Write an equation to show that the two cards have the same amount of money left on them [don't know how to do this part.
To find the equation that shows that the two cards have the same amount of money =
Equation 1 = Equation 2
$90 - 15x = $110 - 20x
Collect like terms
-15x + 20x = $110 - $90
5x = 20
x = 20/5
x = 4
Hence, anytime Keith and Mary buys 4 pizzas their gift card will have the same amount of money left on them.
Answer:
19 / (19+19+13) = 0.37254901... = ~ 37%
Step-by-step explanation:
19 is self-explanatory
(19+19+13) = 52
19 / 52 = 0.37254901...
0.37254901... = ~37%
brainliest plz
