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creativ13 [48]
4 years ago
15

(-7/8 × 15/-7) - (1 × 1/4) + (1/2 +× 1/4)​

Mathematics
2 answers:
Tomtit [17]4 years ago
6 0

Answer:

\frac{7}{4}

Step-by-step explanation:

Remove parentheses.

-\frac{7}{8}\times \frac{15}{-7}-1\times \frac{1}{4}+\frac{1}{2}\times \frac{1}{4}

-\frac{7}{8}\times \frac{15}{-7}-\frac{1}4} + \frac{1}{6}

Multiply and add.

\frac{15}{8}-\frac{1}{8}

Subtract.

\frac{14}{8}=\frac{7}{4}

Ksivusya [100]4 years ago
3 0

Answer:

7/4.

Step-by-step explanation:

\frac{-7}{8} *\frac{15}{-7} = 15/8

1 * 1/4 = 1/4

1/2 * 1/4 = 1/8

15/8 - 2/8 + 1/8 = 13/8 + 1/8 = 14/8 = 7/4

Hope this helps!

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The area of shaded region = 1/2 area of the circle = 1/2 pi r^2

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8 0
3 years ago
According to the scatterplot below, which statement is correct?
IRISSAK [1]

Answer:

Only option C is correct, i.e. The input, or independent variable, is years in operation.

Step-by-step explanation:

Given is the scatter plot of Years in Operation vs. Enrollment at Daycare Center.

The input is always independent variable and is plotted along x-axis.

The output is always dependent variable and is plotted along y-axis.

From the graph, it is clearly visible that:-

x-axis: Years in Operation.

y-axis: Enrollment at Daycare Center.

It means <u>"The input, or independent variable, is years in operation."</u>

Hence, only option C is correct, i.e. The input, or independent variable, is years in operation.

7 0
3 years ago
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If cosX = -0.2, and x is in quadrant II, then what it the value of sinX​
Tems11 [23]

\sin x>0 when x is in quadrant II, so

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7 0
3 years ago
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Mamont248 [21]

Answer:

D

Step-by-step explanation:

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4 0
3 years ago
in 1985, there were 285 cell phone subscribers in the small town of Centerville. the number of subscribers increased by 75% per
Vladimir79 [104]

Answer:

  43,872

Step-by-step explanation:

The growth of cell phone subscribers in Centerville can be modeled by an exponential function.

  y = ab^x . . . . . where a = initial value, b = growth factor

The growth rate is given as 75% per year, so x will have units of years. It will be zero for the year 1985. The growth factor is ...

  b = 1 + growth rate = 1 +0.75 = 1.75

Then the model is ...

  y = 285·1.75^x

__

For x = 1994 -1985 = 9, the number of subscribers is modeled as ...

  y = 285·1.75^9 ≈ 43,872

The model predicts 43,872 cell phone subscribers in 1994.

7 0
2 years ago
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