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3 years ago

Write the following as an equation. Then solve.

Mathematics

2 answers:

kramer3 years ago

8 0

Answer:

8x+8=7x

Step-by-step explanation:

The variable is supposed as x where ever the exact number is not mentioned.

nalin [4]3 years ago

5 0

n*8 + 8 = n*7 --> the answer must be n = -8 because:

8n + 8 = 7n

8n - 8n + 8 = 7n - 8n

8 = -1n

-8 = n

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3 years ago

The equation for the circle is (x-2)^2 + (y-1)^2 = 4 True or False???

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3 years ago

Read 2 more answers

A jar is filled with only dimes and quarters. The jar contains a total of 60 coins and the value of the jar is $11.25. How many

inessss [21]

Answer:

35 quarters

Step-by-step explanation:

This situation has two unknowns - the total number of dimes and the total number of quarters. Because we have two unknowns, we will write a system of equations with two equations using the two unknowns.

$d+q=60$ is an equation representing the total number of coins
$0.10d+0.25q=11.25$ is an equation representing the total value in money based on the number of coin. 0.10 and 0.25 come from the value of a dime and quarter individually.

We write the first equation in terms of q by subtracting it across the equal sign to get $d=60-q$ . We now substitute this for d in the second equation.

$0.10(60-q)+0.25q=11.25\\6-0.10q+0.25q=11.25\\6+0.15q=11.25$

After simplifying, we subtract 6 across and divide by the coefficient of q.

$6+0.15q=11.25\\0.15q=5.25\\q=35$

We now know of the 60 coins that 35 are quarters. To find the total value of the quarters, we multiply 35 by 0.25 and find 8.75.

3 0

3 years ago

1. Write 33% as a fraction.

Olegator [25]

Answer:

33/100

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0.4

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8 0

3 years ago

Read 2 more answers

-8x+3=8x+27 I need help plz I’m trash at math

belka [17]

Answer:

-1.5

Step-by-step explanation:

See steps below:

-8x+3=8x+27

-8x + 3 - 8x - 3 = 8x+ 27 - 8x - 3 ⇒ add -8x - 3 to both sides in order to collect like terms in the different sides of equation
-16x = 24 ⇒ simplified
x= 24/-16 ⇒ divide
x= - 1.5 ⇒ answer

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3 years ago