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saul85 [17]
3 years ago
10

A(n-3)+8=bn solve for n

Mathematics
2 answers:
Naya [18.7K]3 years ago
8 0

Answer:

The value of the equation for n is n=\frac{-3A+8}{b-A}.

Step-by-step explanation:

Consider the provided equation.

A(n-3)+8=bn

We need to solve the equation for n.

Open the parentheses as shown:

An-3A+8=bn

Subtract both the side by An.

An-An-3A+8=bn-An

-3A+8=bn-An

Take n common from right side.

-3A+8=n(b-A)

Divide both the sides by b-A.

\frac{-3A+8}{b-A}=\frac{n(b-A)}{b-A}

n=\frac{-3A+8}{b-A}

Hence, the value of the equation for n is n=\frac{-3A+8}{b-A}.

Lelu [443]3 years ago
6 0
I am pretty sure this is right

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Jeremiah jogged 3 3/4 miles on Saturday morning and 2 1/2 miles Saturday evening. How many miles did he jog on Saturday?
Digiron [165]

Answer:

6.25 Miles

6 1/4

Step-by-step explanation:

3 + 2 = 5 MILES

1/2 you want the denominator to equal 4 so you times it by two

= 2/4

2/4+3/4= 5/4

this gives you one full mile and 1/4

add all together 5+1+1/4

I am picking this is right :)

7 0
3 years ago
Read 2 more answers
As a lifeguard, sara earns a base pay of $80 per day. if her day involves swim instruction, sara earns an additional 9t dollars,
zhuklara [117]

Answer:

Step-by-step explanation:

Sara's base pay is $80

(a) The 9t represents the additional amount of money that she earns if she gives instruction for t hours. 9 stands for $9 per hour

b)The term in the expression is t which stands for the number of hours that she instructs. The coefficient is 9 which stands for the hourly rate

c) The expression for 7 hours would be

We will substitute t into 80 + 9t. It becomes

80 + 9×7

d) in all, she will earn

80 + 9×7 = $143

4 0
3 years ago
How is mathematics done?​
Ad libitum [116K]

Answer:

Mathematics can be completed through the use of logical thinking and the use of equations to figure out various problems.

8 0
3 years ago
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Solve 3x2 + 4x = −5.
Alla [95]
Move the -5 over by adding 5 to both sides
3x^2+4x+5=0
must use quadratic formula

for an equation in the form
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^2-4ac} }{2a}

a=3
b=4
c=5

x=\frac{-4+/- \sqrt{4^2-4(3)(5)} }{2(3)}
x=\frac{-4+/- \sqrt{16-60} }{6}
x=\frac{-4+/- \sqrt{-44} }{6}
x=\frac{-4+/- 2\sqrt{-11} }{6}
remember that√-1=i
x=\frac{-4+/- 2i\sqrt{-11} }{6}
x=\frac{-2+/- i\sqrt{-11} }{3}

x=\frac{-2+ i\sqrt{-11} }{3} or x=\frac{-2- i\sqrt{-11} }{3}


4 0
3 years ago
Can someone double check this please
Dmitry [639]

Answer: c. 29.65 + 0.90r ≤ 41

5 0
3 years ago
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