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Hoochie [10]
1 year ago
12

For this equation, tell whether it is always true, sometimes true, or nevertrue.

Mathematics
1 answer:
dybincka [34]1 year ago
3 0

To answer the question we make the sum on the left side of the equation:

\begin{gathered} \frac{1}{2}y+5=\frac{y+10}{2} \\ \frac{y}{2}+5=\frac{y+10}{2} \\ \frac{y}{2}+\frac{10}{2}=\frac{y+10}{2} \\ \frac{y+10}{2}=\frac{y+10}{2} \end{gathered}

Since both sides are exactly the same. this equation is always true.

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Anne had 28 pens, but 23 of them ran out of ink. How many of Anne's pens still have ink?
Damm [24]
5 of Anne’s pens still have ink. Since 23 of the 28 pens ran out, 5 pens are still good to write with.

Hope this helped!
5 0
3 years ago
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(-3,600,000,000)x(0.00000824)
Nadusha1986 [10]
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8 0
2 years ago
The ratio of money in Obi's wallet to Rudy's wallet one day was 5:2.
mamaluj [8]

Answer:

The amount that Obi initially had was £20

Step-by-step explanation:

Let

x ----> amount that Obi initially has

y ----> amount that Rudy has

we know that

\frac{x}{y} =\frac{5}{2}

x=2.5y ----> equation A

x-20=y-8

y=x-20+8

y=x-12 ----> equation B

Solve the system by substitution

substitute equation A in equation B

y=(2.5y)-12

solve for y

2.5y-y=12\\1.5y=12\\y=8

Find the value of x

x=2.5(8)=20

therefore

The amount that Obi initially had was £20

4 0
3 years ago
What is the answer? -56×(78- 23)÷4?
Salsk061 [2.6K]
Since (78-23) is in the bracket, you need to perform the operation of minus first.
that get you with
-56x(55)÷4
and then you just do it step by step
-56x55 = -3080
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5 0
3 years ago
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4 x 3/5
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4 0
3 years ago
Read 2 more answers
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