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galben [10]
3 years ago
9

Which equations are in standard form? Check all that apply

Mathematics
1 answer:
OleMash [197]3 years ago
4 0

Answer:

2,3,6,7

Step-by-step explanation: Standard form is Ax+By=C

Number one and 4 are in point slope form. Number 5 has no y.

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Eric has 183 coins all of them are nickels and dimes. If the total value of the coins is 14.45, how many of each denomination co
FromTheMoon [43]

Answer:

77 nickels

106 dimes

Step-by-step explanation:

Let there be n nickes and d dimes

Since there are 183 coins, we can write:

n + d = 183

Also, the value of nickel is 0.05 and dime is 0.1, total value is 14.45, so we can write:

0.05n + 0.1d = 14.45

Solving 1st equation for n, we have:

n = 183 - d

Putting this into 2nd equation and solving for d:

0.05n + 0.1d = 14.45\\0.05(183-d) + 0.1d = 14.45\\9.15-0.05d+0.1d=14.45\\0.05d=5.3\\d=106

There are 106 dimes

Since, n = 183 - d

n = 183 - 106

n = 77

There are 77 nickels

4 0
3 years ago
The sum of three consecutive numbers is 72 what are the smallest of these numbers
Airida [17]
A + b + c = 72

a = b - 1

c = b + 1

 

(b - 1) + b + (b + 1) = 72

Simplify

3b = 72

b = 24

 

a = 24 - 1

a = 23


8 0
2 years ago
There are 1,295 students attending a small university.There are 714 women enrolled.What percent of the students are women?
BARSIC [14]
Total students = 1295

Number of women = 714

Percentage of women = 714/1295 x 100 = 55.14%

------------------------------------------------------------------
Answer: 55.14% of the students are women.
------------------------------------------------------------------
3 0
2 years ago
MATH HOMEWORKKKKKKKKKKKKKKKKKKKKKKKK
BaLLatris [955]
20.9984 rounded = 21
6 0
2 years ago
Solve the equation for y. 4.2x-1.4y=2.1
mr Goodwill [35]

Subtract 2.1 from both sides:

4.2x-1.4y-2.1=0

Add 1.4y to both sides:

4.2x-2.1=1.4y

Of course, we can rewrite this as

1.4y=4.2x-2.1

Divide both sides by 1.4

y = \dfrac{4.2}{1.4}x - \dfrac{2.1}{1.4} = 3x - 1.5

8 0
3 years ago
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