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3 years ago

-1/2 x -1/7 I do not understand how to do this

Mathematics

2 answers:

Firdavs [7]3 years ago

8 0

Answer:

sss

Step-by-step explanation:

Kobotan [32]3 years ago

6 0

Answer:

$\dfrac{1}{14}$

Step-by-step explanation:

1. You are multiplying two negative numbers. Negative times negative is positive, so the answer is positive.

2. To multiply two fractions, multiply together the numerators and multiply together the denominators.

$-\dfrac{1}{2} \times -\dfrac{1}{7} =$

$= \dfrac{1 \times 1}{2 \times 7}$

$= \dfrac{1}{14}$

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State whether the following statements are true or false, and explain your reasoning.

Masja [62]

Answer:

Step-by-step explanation:

a) A square is a rectangle. True

Reason: Property of Rectangle: (i) Opposite sides are equal and parallel. (ii) Each angle is 90 (iii) Diagonals are equal and bisect each other.

A square hold all these properties. A square is a rectangle.

b) A polygon with 21 sides has 432 possible diagonals. False

Reason: Number of diagonals of a polygon = $\frac{n(n-3)}{2}$

n --> number of sides of a polygon.

= $\frac{21*18}{2}$ = 189 diagonals

c) All three angles in an Isosceles triangle are equal. False

Reason: In an isosceles triangle, two angles are equal.

If three angles are equal, then that is an equilateral triangle.

d) The measures of the exterior angles of a nonagon, a nine-sided figure, have a sum of 360°. True.

Reason: The sum of measures of the exterior angles of any polygon is 360

6 0

3 years ago

Read 2 more answers

Whats the answer to 7c+12c-2=

Aloiza [94]

Answer:

19c-2

Step-by-step explanation:

photomath

5 0

4 years ago

Given P(A)=0.78P(A)=0.78, P(B)=0.65P(B)=0.65 and P(A\cup B)=0.873P(A∪B)=0.873, find the value of P(A\cap B)P(A∩B), rounding to t

Sever21 [200]

Answer:

$P(A\ n\ B) = 0.557$

Step-by-step explanation:

Given

$P(A) = 0.78$

$P(B) = 0.65$

$P(A\ u\ B) = 0.873$

Required

Determine $P(A\ n\ B)$

From laws of probability, we have:

$P(A\ n\ B) = P(A) + P(B) - P(A\ u\ B)$

Substitute in values

$P(A\ n\ B) = 0.78 + 0.65 - 0.873$

$P(A\ n\ B) = 0.557$

Hence, $P(A\ n\ B)$ is calculated to be 0.557

8 0

3 years ago

What is the slope of (10, 4), (4, 15)?

kakasveta [241]

Answer:

Slope is -11/6

Step-by-step explanation:

$Given \: points \: are \: (10,4) \: \: and \: (4,15) \\ slope \: = \frac{y2 - y1}{x2 - x1} \\ here \: x1 = 10 \: \: \: y1 = 4 \\ and \: \: x2 = 4 \: \: \: and \: \: y2 = 15 \\ on \: substituting \: the \: values \: in \: formula \\ slope = \frac{15 - 4}{4 - 10} \\ = \frac{11}{ - 6}$

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION.

6 0

3 years ago

The perimeter of parallelogram is 72 meters. The width of the parallelogram is 4 meters less than its length . Find the Length a

Marrrta [24]

Let n = length
let n-4 = width since it is 4 meters shorter

2( n+n-4) =72 Two of the length and width added together equal the perimeter
combine like terms
2(2n -4) = 72 Now use the distributive law on the left side of the equation
4n -8 = 72 Now add 8 to both sides

4n -8 +8 = 72 +8
4n = 80 Finally divide each side by 4
n=20
so the length is 20 and the width is 4 less or 16.
Let's see if our answer works.
20 + 16 + 20 +16 =? 72
72 =72 yes, it does. Length = 20 Width = 16

6 0

3 years ago