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seraphim [82]
3 years ago
13

PLEASE HELP ME WITH THIS MATH TEST

Mathematics
2 answers:
Alex3 years ago
5 0

Answer:

40cm²

Step-by-step explanation:

just need to add all the 1cm² together to get 40

Troyanec [42]3 years ago
4 0

Answer: 40 cm ^2

Step-by-step explanation:

cuz math

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Use the properties of logs to determine how many more times severe was the San Francisco earthquake? The severity is equal to th
scoundrel [369]

Answer:

The answer is "158.489"

Step-by-step explanation:

for san francisco earthquake:

\log(\frac{a_1}{T}) + B = 7.8\\\\\log(\frac{a_1}{T})+\log(10^{B}) = 7.8\\\\\log(\frac{a_1}{T} \times 10^{B})=7.8\\\\(\frac{a_1}{T} \times 10^B=10^{7.8}...............(i)

similarly , for coloumbia earthquake:

\frac{a_2}{T}\times 10^B = 10^{5.6}.................(ii)

divide equation (i) and (ii):

\frac{a_1}{a_2}=\frac{10^{7.8}}{10^{5.6}}\\\\\frac{a_1}{a_2}=10^{2.2}\approx 158.489

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3 years ago
Explain how to use a model to show 2/6 ÷ 1/12 and 2/6 ÷ 4
a_sh-v [17]
4/12 / 1/12 & 4/12 / 48/12 are how you make them equal, although i'm not sure about the rest
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3 years ago
28 members and 50% decrease
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6 0
3 years ago
Read 2 more answers
-9=-3(x+2)<br>solve for x <br>show steps
lianna [129]

SimplifyOkie dokie so first things first, you have to get rid of those parentheses! To do this you use the distributive property. -3(x+2) is the same thing as -3(x)+-3(2). that and you get -9=-3x-6. So you want to get x by itself to be able to find what x is, so you add 6 to both sides of the equation to get rid of the -6. So then you get -3=-3x. Then you must divide both sides by the coefficient of x, which would be -3. When you divide both sides by -3 you get -3/-3=x, which is the same thing as 1=x. Hope this helped!

4 0
4 years ago
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Order the fractions from smallest to largest. 5/9 99/100 1/4 9/10​
brilliants [131]

Answer:

1/4, 5/9, 9/10, 99/100

Step-by-step explanation:

<u>Step 1:  Make common denominators</u>

The common denominator is: 900

<u>Step 2:  Make sure they all have common denominator</u>

5/9 * 100/100 = 500/900

99/100 * 9/9 = 891/900

1/4 * 225/225 = 225/900

9/10 * 90/90 = 810/900

<u>Step 3:  Order the fraction from smallest to largest</u>

225/900, 500/900, 810/900, 891/900

<u>Step 4:  Check to see what the original values were</u>

1/4, 5/9, 9/10, 99/100

Answer:  1/4, 5/9, 9/10, 99/100

3 0
4 years ago
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