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AleksAgata [21]
3 years ago
15

PLEASE HELP! URGENT!!

Mathematics
2 answers:
docker41 [41]3 years ago
8 0

Answer:

B

Step-by-step explanation:

y = ax^2 + bx + c is standard form for a quadratic equation

Mrrafil [7]3 years ago
6 0

B: y = 5.8x + 3x^2 -9

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there are 3 people who work full-time and are to work together on a project but their total time on the project is to be equival
mina [271]

The problem express that the fraction of time worked by the three people need to be equivalent to one person working full time. This means that the fraction need to add up to one. We know one person works ½ time on the project and another works one third 1/3 time.

Given:

A = the amount of time that the third person needs to work on the job to add up to one

1 = ½ +1/3 + A

1 – ½ - 1/3 = A

To subtract the fractions put them all over a common denominator. Use 3 * 2 as the denominator.

1=6/6, ½ = 3/6, 1/3 = 2/6

A = 6/6 – 3/6 – 2/6

<span>A = 1/6 , The third person  must work on the project</span>

6 0
2 years ago
The line that contains a slope of 1/2 and passes through the point (-2, -3).
natta225 [31]
Y = mx + b
-3 = 1/2(-2) + b
-3 = -1 + b
b = -2

equation
y = 1/2x - 2

standard form
1/2x - y = 2
or 
x - 2y = 4 
7 0
2 years ago
Erica had 6 coins in her coin collection. She goes to a coin show and buys some more coins. How many coins does she have now?
goldfiish [28.3K]

Answer:

6+x with x equalling the amount of coins bought if that is what you were looking for

Step-by-step explanation:

if you want to make and equation out of this you don't know the amount of coins she bought so you use a variable (x) to replace that unknown number then since it says she bought more she is adding more to her collection which means it would be an addition problem, leaving you with 6+x for your final answer

5 0
3 years ago
-9 - -7 I also need a example for it (try to make the example small the box is not that big) thanks everyone who helps
Sphinxa [80]
It’s positive 2 because if u add or subtract two negative numbers it comes out positive I’m pretty sure
8 0
2 years ago
Express the ratio as a fraction in simplest form:<br> 18 ounces to 3 cups
IrinaVladis [17]

Answer:

6 : 1

Step-by-step explanation:

divide by 3 on both sides

18 ÷ 3 = 6

3 ÷ 3 = 1

6:1

8 0
3 years ago
Read 2 more answers
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