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Stels [109]
3 years ago
12

Please help!! 15 Points !!

Mathematics
1 answer:
nasty-shy [4]3 years ago
4 0

Answer:

equation: 3h+2.50=13

solution: h=$3.50

each hamburger was $3.50

Step-by-step explanation:

hope this helps

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−2x+2y−3z=
ziro4ka [17]

Answer:

um

Step-by-step explanation:

5 0
3 years ago
How much of earth's surface is covered by water,including both salt and fresh water?
Crank

Answer:

About 71% of Earth's surface is covered in water.

Step-by-step explanation:

About 97% of Earth's water is salt water.

About 3% of Earth's water is fresh water.

7 0
3 years ago
If f(x)=-x^2+3X +5 and g(x)=X^2 +2x, which graph shows the graph of (f+g)(x)?
lana [24]

Answer:

Step-by-step explanation:

+ We find the function (f+g)(x) like

(f+g)(x)= f(x) + g(x) = x^2 +3x+5 + x^2 + 2x = 2x^2 +5x + 5

+ So the graph of (f+g)(x) is a parabole with the sommet (-5/4, 15/8).

Hope that useful for you.

5 0
3 years ago
There is a 15% it will rain on both Saturday and Sunday. There is a 60% chance of rain on Saturday. What is the chance of
Artemon [7]

Answer:

25%

Step-by-step explanation:

This question is about conditional probability. Let's say that the probability of raining on Saturday is X=true and the probability of raining on Sunday is Y=true. There is a 15% it will rain on both Saturday and Sunday, to put into the equation it will be:

P(X= true ∩ Y = true) = P(X = true) * P(Y = true)= 0.15

There is a 60% chance of rain on Saturday, mean the  equation is

P(X = true) = 0.6

The question is asking for the chance of rain on Sunday or P(Y = true). If we substitute the second equation to first, it will be:

P(X = true) * P(Y = true)= 0.15

0.6* P(Y = true)= 0.15

P(Y = true)= 0.15/0.6

P(Y = true)= 0.25 = 25%

5 0
3 years ago
Mr. Williamson bought 4 boxes of chewy granola bars and 5 boxes of crunchy granola bars. Each box contained the same number of g
Marta_Voda [28]

Answer: There were 8 granola bars in each box, x = 8.

Step-by-step explanation:

The first step is write an equation:

4x + 5x = 72

The second step is to combine like terms:

4x + 5x = 72

9x = 72

Step 3 is to use the properties of equality and inverse operations to solve the equation:

9x/9 = 72/9

x = 8

Since x = 8, there were 8 granola bars in each box.

I hope I helped and have a great day! Please mark me brainliest. ^-^

8 0
3 years ago
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