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Karo-lina-s [1.5K]
3 years ago
5

My question is what is 2/5 x 12.

Mathematics
1 answer:
NeTakaya3 years ago
7 0
It’s 4.8 um yea if u Need help text me
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Sam has some red and yellow cubes. She has 20 cubes in total. She has 8 more yellow cubes than red ones. How many red cubes does
kykrilka [37]

Answer:

6

Step-by-step explanation:

Let's call the number of red cubes that Sam has r, and the number of yellow cubes that she has y.

Since the sum of the number of cubes is 20:

r+y=20

Since she has 8 more yellow cubes than red ones:

y=r+8

You can now plug this back into the first equation:

r+(r+8)=20

2r+8=20

2r=12

r=6

Therefore, Sam has 6 red cubes. Hope this helps!

Hope this helps!

6 0
3 years ago
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Given log5 3=0.6826 and log5 8=1.2920, evaluate the expressions<br><br> Please help!?
gulaghasi [49]

Answer:

a) 1.3652

b) 1.3906

Step-by-step explanation:

a) log5 9 = log5 3² = 2log5 3 = 2(0.6826) = 1.3652

b) log5 75/8 = log5 75 - log5 8 = log5 3×25 - log5 8=

log5 3 + log5 5² - log5 8 = 0.6826 + 2 - 1.2920 = 0.6826 + 0.708 = 1.3906

3 0
3 years ago
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Name the theorem that proves congruence
MatroZZZ [7]
Pythagorean Theorem.
6 0
3 years ago
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What is the value of k in the equation 2/7(k+5/8)=2 2/7
shusha [124]
2/7 ( k+5/8) = 2 and 2/7

2/7 (k+5/8) = 16/7     |multiply by 7

2(k+5/8) = 16     |divide by 2

k+5/8 = 8     |subtract  5/8

k=8-5/8 = 7 and 3/8 = 27/8 = 7.375 


7 0
3 years ago
Please help me solve this, and show your work
zlopas [31]

6r+5=11r\ \ \ \ |\text{subtract 6r from both sides}\\\\5=5r\ \ \ \ |\text{divide both sides by 5}\\\\\boxed{r=1}\\-------------------------\\\dfrac{2x-4}{2}=6x+3\\\\\dfrac{2x}{2}-\dfrac{4}{2}=6x+3\\\\x-2=6x+3\ \ \ \ \ |\text{add 2 to both sides}\\\\x=6x+5\ \ \ \ |\text{subtract 6x from both sides}\\\\-5x=5\ \ \ \ \ |\text{divide both sides by -5}\\\\\boxed{x=-1}

6 0
4 years ago
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