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MrRa [10]
4 years ago
5

Ax) = x² + 4x + 5 What is the vertex?

Mathematics
1 answer:
kakasveta [241]4 years ago
6 0

Answer:

(-2,1)

Step-by-step explanation:

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A student has a 2% salt water solution and a 7% salt water solution. To best imitate salt water at a local beach, he needs 1 lit
FromTheMoon [43]

Let

x-------> the amount of 2\% solution

y--------> the amount of 7\% solution

we know that

2\%=0.02\\7\%=0.07\\3.5\%=0.035

so

x+y=1

y=1-x -------> equation A

0.02x+0.07y=0.035 -------> equation B

substitute equation A in equation B

0.02x+0.07(1-x)=0.035

0.02x+0.07-0.07x=0.035

0.05x=0.035

x=0.7\ liters

find the value of y

y=1-x

y=1-0.7=0.3\ liters

therefore

The student need 0.7\ liters of 2\% solution and 0.3\ liters of 7\% solution

<u>the answer is</u>

A) The percent values were written incorrectly in the equation

B) The amount of 7% solution should be written as 1 – x, not x – 1.

8 0
3 years ago
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Barry begins the year with $25 in his piggy bank. At the end of each
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Answer:

I think the answer is 40. it will take about 20 months to have 100 dollars

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3 years ago
If two angles of one triangle equal in measure to two angles of another triangle then the third angles of the triangle
Vika [28.1K]

Answer:

Are also equal

Step-by-step explanation:

Say triangle A has the angles 30 and 60. triangle b also has those angles. Total angle of any triangle is 180 so 180-60-30 = 90 for triangle A and it is also the same for triangle b. Thus 90 = 90 angles are the same.

8 0
2 years ago
The stained glass window is a regular hexagon which is 2.5 meters on a side. What is the approximate length of the metal frame s
posledela

Answer:

15 meters

Step-by-step explanation:

One side is 2.5 meters, so if they're all the same then you would multiply that by 6

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3 years ago
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For what values of b the relation R:{(b^2, 5), (5b, 6)} is not a function?
xenn [34]

Answer:

B=5,0.

Step-by-step explanation:

It's not that hard. It's just that it might throw you off a bit with the R and the other things. Functions if you don't remember are where the coordinates don't have the same x and y. So since the y1 and y2 are different then to make it not a function, you have to make x1 and x2. To make it that b would have to be = to 5 and 0.

6 0
4 years ago
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