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Tcecarenko [31]
3 years ago
15

How does 31÷5 look using Long division

Mathematics
1 answer:
Pavel [41]3 years ago
3 0
I could only figure out the partial quotient way im sorry but i think this could help

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A chemist has two alloys, one of which is 5% gold and 20% lead and the other which is 30% gold and 50% lead. How many grams of e
dmitriy555 [2]

The amount of the first alloy is 450 grams and the amount of the second alloy is 30 grams.

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have:

A chemist has two alloys, one of which is 5% gold and 20% lead and the other which is 30% gold and 50% lead.

Let's suppose the x is the amount of the first alloy and y is the amount of the second alloy:

We can make two linear equation in two variables:

0.05x + 0.3y = 31.5  ...(1)

0.2x + 0.5y = 105  ...(2)

After solving the above two linear equations by substitution method, we get:

x = 450 grams

y = 30 grams

Thus, the amount of the first alloy is 450 grams and the amount of the second alloy is 30 grams.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

3 0
2 years ago
A certain forest covers an area of 4600km. Suppose that each year this area decreases by 7.75%. What will the area be after 13 y
wolverine [178]

Answer:

1679.60\ km^2

Step-by-step explanation:

-We can use the exponential decay function to estimate the size after 13 years:

P_t=P_oe^{-rt}

Where:

P_t is the size after t years, t is the time, r is the rate of decay and P_o the original size.

#We substitute and calculate as:

P_t=P_oe^{-rt}\\\\=4600e^{-13\times 0.0775}\\\\=1679.60

Hence, the forest covers 1679.60\ km^2 after 13 years.

4 0
3 years ago
Which list shows these numbers in ascending order?<br> -V6, 2, -23, 2.5
Kryger [21]
-v6,-23,2,2.5
Correct to ascending order
3 0
3 years ago
If g(x)= -(3/(4x)) , find g(g(x)) please show work.
ivann1987 [24]

Answer:

g(g(x)) = x

Step-by-step explanation:

g(x) = -\dfrac{3}{4x}

g(g(x)) = -\dfrac{3}{4g(x)}

g(g(x)) = -\dfrac{3}{4(-\frac{3}{4x})}

g(g(x)) = -\dfrac{3}{4} \div (-\frac{3}{4x})

g(g(x)) = -\dfrac{3}{4} \times (-\frac{4x}{3})

g(g(x)) = \dfrac{3 \times 4x}{4 \times 3}

g(g(x)) = x

4 0
3 years ago
Read 2 more answers
Choose the correct ratio for each trig function below:
Tanya [424]

Answer:

bbbbbbbbbb!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Step-by-step explanation:

6 0
3 years ago
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