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kykrilka [37]
2 years ago
5

-9/14 + 2/7 4 + (- 1 2/3) 15/4 + (-4 1/3)

Mathematics
2 answers:
vladimir2022 [97]2 years ago
4 0

Answer:

it is b

Step-by-step explanation:

u welcome if im correct

OLEGan [10]2 years ago
4 0

Answer:

1= -5/14

2= 2 1/3

3= -7/12

Step-by-step explanation:

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(3x+2)∧2=9 how do i solve this in the square root property
Irina18 [472]
(3x+2)^2=9 \\\\9x^2+12x+4-9=0\\\\9x^2+12x-5=0\\\\a=9,\ \ b=12, \ \ c=-5

x_{1}=\frac{-b-\sqrt{b^2-4ac}}{2a}=\frac{-12-\sqrt{12^2-4 \cdot9 \cdot (-5)}}{2 \cdot 9}=\frac{-12-\sqrt{144+180}}{18}=\\\\=\frac{-12-\sqrt{324}}{18}=\frac{-12-18}{18}=\frac{-30}{18}=-\frac{5}{3}\\\\x_{2}=\frac{-b+\sqrt{b^2-4ac}}{2a}=\frac{-12+\sqrt{12^2-4 \cdot9 \cdot (-5)}}{2 \cdot 9}=\frac{-12+18}{18}=\frac{6}{18}=\frac{1}{3} \\\\Answer: \ x=-\frac{5}{3}\ \ and \ \ x=\frac{1}{3}
 

6 0
3 years ago
The histogram shows the speeds of downhill skiers during a competition. Estimate the mean of the data set displayed in the histo
Ostrovityanka [42]

Answer:

≈50.6

Step-by-step explanation:

Not sure what precision level this problem is looking for, but for right-skewed distributions, we know that the mean is going to be pulled right and therefore the mean should be larger than the median. To a high confidence level, the mean should fall between 50 and 59, or in the third column.

If a single estimation is wanted, assume the values inside each column are uniformly distributed:

\displaystyle\\\widehat{\mu}=\frac{34.5\cdot 4+...+74.5\cdot 2}{4+9+4+4+2}\approx \boxed{50.6}

8 0
3 years ago
How many times greater is one hour than one minute
Sindrei [870]
The answer to your question is...

60 times more than a minute!
8 0
3 years ago
A ream of paper weighs 5 pounds and has dimensions of 8.5 inches by 11 inches by 2 inches.
devlian [24]
S = 2 (lw + lh + hw)
S = 2 ((8.5)(11) + (8.5)(2) + (11)(2))
S = 2 (93.5 + 17 + 22)
S = 2 (132.5)
S = 265 sq in
6 0
3 years ago
Simplify the expression. write your answer in scientific notation<br> (9.6x10^3) x (6.7x10^2)
slavikrds [6]
(9.6 x 10^3) (6.7 x 10^2)
(9,600) (670)
6,432,000
6.432 x 10^6

Answer:
6.432 x 10^6
4 0
3 years ago
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