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4 years ago

Which ratio is higher 15:20 or 12:16. for 35 points

1 answer:

8 0

To find which ratio is higher, we can first convert the ratios into fractions (that makes it easier, at least for me) and then simplify the fractions and see which one is greater.

Since ratios are basically division, 15:20 = $\frac{15}{20}$ , and

12:16 = $\frac{12}{16}$

Now we simplify these fractions. 15 and 20 have a GCF of 5, so taking out the common number gives us the simplified fraction of $\frac{3}{4}$ .

12 and 16 have a GCF of 4, so taking out the common number gives us the simplified fraction of $\frac{3}{4}$ . Since $\frac{3}{4}$ = $\frac{3}{4}$ , these ratios are the same.

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Amelie solves the following system of equations.

PIT_PIT [208]

The values of x and y that satisfy this system of equations are 10 and 5 respectively

<h3>Simultaneous equation</h3>

Given the system of equations

x + y = 20

3x - 3y = 30

_____________________

x + y = 20

x - y = 10

Add the equations

2x = 20 + 10

2x = 30

x = 30/2

x = 15

Substitute

x -y = 10

15 - y = 10

y = 5

Hence the values of x and y that satisfy this system of equations are 10 and 5 respectively

Learn more on simultaneous equation here: brainly.com/question/16863577

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2 years ago

Give the set of four quantum numbers that represent the last electron added (using the aufbau principle to the cl atom.

qaws [65]

An element has four quantum numbers associated with it. We have

1. principal quantum number ( $n$ )
2. azimuthal quantum number ( $l$ )
3. magnetic quantum number ( $m_{l}$ )
4. spin quantum number ( $m_{s}$ )

To look for each quantum number of Chlorine (Cl), we mus first recall its electronic configuration: $1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}$ .

1. For $n$ , we need to look for its highest energy level or by simply checking the period that the element belongs to. So for this case, it's $n = 3$ .

2. For $l$ , we need to look for the sublevel where the last electron was assigned. The sublevels, p, d, f are assigned to a value of 0, 1, 2, and 3, respectively. Since the last electron was assigned in p, then $l = 1$ .

3. And for $m_{l}$ , the number of orbitals present in Cl is $2l+1 = 3$ . The possible magnetic quantum numbers for $p$ are -1, 0, +1. Since there 5 electrons we count starting at -1. So, we have $m_{l}=+1[tex].\\4. Lastly, for [tex]m_{s}$ , we need to determine the spin. Since we have 5 electrons, all the arrows upward are filled in. That means the fifth electron has a spin of +1/2.

Answers: $n =3, l = 1, m_{l} = 0, m_{s} =+1/2$

8 0

3 years ago

If a car travels 23 miles on 1.0 gal of gas, how many liters of gasoline are needed for a 135 mile trip?

cluponka [151]

<span>Solution can be gained by using "Product of means = Product of extremes" concept. So the information we have is 23 miles on 1 gal and 135 mile on 'x' gal. 23 : 1 :: 135 : x As per Product of means = Product of extremes, 23 multiplied x = 135 multiplied by 1. And x will be 135 divided by 23 which is 5.86 gal Now, we have to convert gal to liters, 1 gal = 3.78 liters, so 5.86 gal = 5.86 multiplied by 3.78, which is 22.15 liters. Hence, 22.15 liters of gasoline are needed for a 135 mile trip</span>

3 0

3 years ago

Need help on numbers 6, 7, and 8 ill mark brainliest if they are right

Andrei [34K]

Answer:

1st one is B

Step-by-step explanation:

2nd one is the 1st one

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3 years ago

What is the image point of (-9,6) after a translation left 4 units and down 4 units

muminat

Answer:( -13,2)

Step-by-step explanation:

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3 years ago