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Ierofanga [76]
3 years ago
13

SIMPLIFY ((-1/6 - (-5/8)) * (-9.6)

Mathematics
1 answer:
olga2289 [7]3 years ago
7 0
((-1/6-(-5/8))*(-9.6)
ANSWER is
-4.4
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Write the contrapositive of the conditional statement. If a shape is a rhombus, then it has four congruent sides.
NikAS [45]
If the figure does not have four congruent sides, then the shape is not a rhombus.
7 0
3 years ago
A cake recipe for 12 people calls for 8 cups of sugar. If Jenny wants to bake a cake for 7 people, how many cups of sugar should
Vaselesa [24]
12 people ⇒8 cups

1 person ⇒ 8/12 = 2/3 cup

7 persons ⇒ 2/3 x 7 = 14/3 4 2/3 cups

Answer: She should use 4 2/3 cups of sugar.
3 0
3 years ago
Suppose the correlation between height and weight for adults is 0.80. What proportion (or percent) of the variability in weight
gulaghasi [49]

Answer: 64% of the variability in weight can be explained by the relationship with height.

Step-by-step explanation:

  • In statistics, Correlation coefficient is denoted by 'r' is a measure of the strength of the relationship between two variables.
  • Coefficient of determination, r^2, is a measure of variability in one variable can be explained variation in the other.

Here, r= 0.80

\Rightarrow\ r^2= (0.80)^2=0.64

That means 64% of the variability in weight can be explained by the relationship with height.

8 0
3 years ago
Simplify (4x+5y)(2x-3y)+3xy<br><br> Help
amid [387]

Answer:

8x² - 15y² + xy

Step-by-step explanation:

(4x + 5y) (2x - 3y) + 3xy

multiplying the terms in brackets

(4x) (2x - 3y) + (5y) (2x - 3y) + 3 xy

multiplying with each terms inside the bracket

(4x)(2x) - (4x) (3y) + (5y) (2x) - (5y) (3y) + 3xy

doing the product each of the pair of terms

8x² - 12xy + 10xy - 15y² + 3xy

taking the sum of terms with coefficient "xy"

8x² - 15y² -2xy + 3xy

8x² - 15y² + xy


3 0
3 years ago
suppose the mean 40 yard dash time of a perfessional football player is 4.41 seconds with a standard deviation of 0.15 seconds.
I am Lyosha [343]
The percent of runners between these two times is 47.72.

We find the z-scores associated with each end of this interval using the formula
z=(X-μ)/σ

For the lower end,
z=(4.11-4.41)/0.15 = -0.3/0.15 = -2

Using a z-table (http://www.z-table.com) we see that the area to the left of, less than, this score is 0.0228.

For the upper end:
z=(4.41-4.41)/0.15 = 0/0.15 = 0

Using a z-table we see that the area to the left of, less than, this score is 0.5000.

We want the area between these times, so we subtract:
0.5000-0.0228 = 0.4772

This corresponds with 47.72%.
4 0
3 years ago
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