Is this the full question? I’m confused.
Answer:
(x - 6)(x + 5)
the answer is a
Step-by-step explanation:
A = number of ants
w = number of worms
There are 20 more ants than worms.
⇒ a - 20 = w
There are 80 insects.
⇒ a + w = 80
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Solve for a and w :
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a -20 = w -------------- (1)
a + w = 80 -------------- (2)
Substitute equation (1) into (2) :
a + (a - 20) = 80
a + a - 20 = 80
2a - 20 = 80 // combine like terms
2a = 100 // add 20 to both sides
a = 50 // divide by 2 on both sides
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Sub a = 30 into equation (1) :
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a - 20 = w
50 - 20 = w
w = 30
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Find ants and worms :
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ants = a = 50
worms = w = 30
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Answer: There are 50 ants and 30 worms.
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Answer:
19/20
Step-by-step explanation:
Probability of blue tile= 9/20
probability of letter b tile= 10/20= 1/2
Probability of blue or letter b= Probability of blue + probability of letter b
= 9/20 + 1/2
= 19/20