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motikmotik
2 years ago
5

Please help!!!! thanks

Mathematics
1 answer:
g100num [7]2 years ago
5 0
B. 2a -21 = 1

2/3 a -7 = 1/3

Multiply through by 3

(2/3 a)(3) -(7x3) = 1/3 x 3

2a - 21 = 1
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2.5 (8.6 ÷ 2 – 1.8)
Alina [70]

Answer:

6.25 is the answer

Step-by-step explanation:

work in the () first

2.5(8.6÷2-1.8)

2.5(2.5)

the multiply the two numbers and get 6.25

hope this helps

7 0
3 years ago
Read 2 more answers
5d2-50d+125 = <br> Fully factor each expression
Ede4ka [16]
First, let's start off by simplifying as much as possible before factoring.

5d^2 - 50d + 125

We can divide all the numbers by 5 in order to simplify it:

5(d^2 - 10d + 25)

Now all we need to do is factor.
Since -5*-5 = 25 and -5 - 5 = -10, we can use this to factor:

5(d - 5)(d - 5)
Or
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8 0
3 years ago
An account earns simple interest. $1675 at 4.6% for 4 years a. Find the interest earned. $___ b. Find the balance of the account
Colt1911 [192]
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16.75 x 4.6 = 77.05 
77.05 is the interest for one year. 
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B. Add the interest to the original balance to get the total. 
308.20 + 1675 = 1983.20 
The balance of the account is $1983.20 after 4 years. 

Hope this help!
7 0
3 years ago
3 less than the quotient of a number y and 4
mr Goodwill [35]

3 less than the quotient of a number y and 4

3       <        y / 4

3    <     y/4

x 4          x 4

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6 0
3 years ago
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blondinia [14]

The quotient of r and 12

r:12=r\div12

The quotient of r and 12 as a fraction

\dfrac{r}{12}

3 0
3 years ago
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