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3 years ago

5

Kit bought a soft drink and a sandwich for $9.00. What was the price of each of the sandwich cost 3.5 times as much as the drink

?

1 answer:

Rainbow [258]3 years ago

8 0

Sandwich cost $7.70 and the soda costs $2.20.

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Triangle ABC is an equilateral triangle. Which is not a true statement about triangle ABC?

Airida [17]

Answer:

G) Triangle ABC is isosceles triangle ( as it is given that it is an equilateral triangle)

1) The measure of angle A is 50 ( it is 60)

This statement is wrong as in an equilateral triangle the measure of all angles is 60° so A has to be 60°

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Determine the sum -51+134

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83

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Ive got everything but part c. Ill give brainliest!

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1/30

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Write the equation of a line that passes through (1,9) and has a slope of -3, please!

QveST [7]

Answer:

y = -3x + 12

Step-by-step explanation:

<u><em>Very similar to the other question i answered, by here's a step by step anyway in case you find it helpful : )</em></u>

There are lots of different methods to do these types of questions, but this is the way i like to do it.

Coordinate (x1, y1) : (1, 9) and Gradient (m): -3

Start with this generic equation:

y- y1 = m(x-x1)

Substitute in the values they have given you:

y - (9) = -3(x-1)

This becomes:

y -9 = -3x +3

Keep solving by moving the 10 over to the other side:

y = -3x + 3 +9

y = -3x + 12

An easy way to double check:

1) the coefficient of x is the slope. We got -3x, and the slope is -3, so that's correct.

2) Substitute x=1 into the equation, and we get 9, which is the exact coordinate that they gave us. This is also right.

Hope this helped : )

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3 years ago

It's an overcast day in Hayward and you're waiting for AC Transit 97 Bus Line to show up. Your weather app says there's a 30% ch

melomori [17]

Answer:

a

$P(r n L) = 0.12$

b

$P(L) = 0.225$

c

$P(\= r | L) = 0.4667$

Step-by-step explanation:

The chance that it will rain is $P(r ) = 0.30$

The chance that it does not rain is $P(\= r ) = 1 - P(r )$

$P(\= r ) = 1 -0.30$

$P(\= r ) = 0.70$

The probability that the bus run late if it rains is $P(L | r) = 0.4$

The probability that the bus run late if it does not rain is $P(L | \= r) = 0.15$

Generally the probability that it will rain and the bus will be late is mathematically represented as

$P(r n L) = P(L | r) * P(r)$

=> $P(r n L) = 0.4 * 0.30$

=> $P(r n L) = 0.12$

Generally the probability that the bus will be late is mathematically represented as

$P(L) = P(r) * P(L|r) + P(L | \= r) * P(\= r)$

=> $P(L) = 0.30 * 0.4 +0.15*0.70$

=> $P(L) = 0.225$

Generally given that the bus ran late, the probability that the bus it was not raining is mathematically represented as

$P(\= r | L) = 1- P(r | L )$

Here $P(r | L ) = \frac{P(r n L)}{P(L)}$

=> $P(r | L ) = \frac{0.12}{0.225}$

=> $P(r | L ) = 0.533$

So

$P(\= r | L) = 1- 0.533$

=> $P(\= r | L) = 0.467$

3 0

3 years ago