All categories

3 years ago

Assume the following is a true statement:

1 answer:

3 0

We analyze the statement: If it is raining,I will carry an umbrella. This statement can be true because one would surely depend on the weather so as to do not bring any unnecessary things anymore. When the statement is reversed. I will carry an umbrella if it is raining which still makes sense. Answer then is D

You might be interested in

What is the slope between the points (5,-7) and (-7,1)?

SCORPION-xisa [38]

I hope this helps you

(5,-7) x'=5 y'= -7

(-7,1) x"= -7 y"=1

slope. (x'-x")=y'-y"

slope. (5-(-7))= -7-1

slope. 12= -8

slope =-8/12

slope = -2/3

6 0

3 years ago

Two coins and a number cube are tossed at the same time. What is the approximate probability that the coins show different sides

Wewaii [24]

0.17
tell me if i am right

7 0

3 years ago

Read 2 more answers

Pls help me with my beestar

Minchanka [31]

Mmmmm Maybe you should try doing something doing something doing something during

8 0

2 years ago

Read 2 more answers

Prove that the triangle EDF is isosceles. Give reasons for your answer.

Gekata [30.6K]

Answer:

$\triangle EDF$ is isosceles.

Step-by-step explanation:

Please have a look at the attached figure.

We are given the following things:

$\angle EDF = y$

$\text{External }\angle DFG = 90 +\dfrac{y}{2}$

Let us try to find out $\angle E$ and $\angle DFE$ . After that we will compare them.

Finding  $\angle DFE$ :

Side EG is a straight line so $\angle GFE = 180$

$\angle GFE$ is sum of internal $\angle DFE$ and external $\angle DFG$

$\angle GFE = 180 = \angle DFE + \angle DFG\\\Rightarrow 180 = \angle DFE + (90+\dfrac{y}{2})\\\Rightarrow \angle DFE = 180 - 90 - \dfrac{y}{2}\\\Rightarrow \angle DFE = 90 - \dfrac{y}{2} ....... (1)$

Finding  $\angle E$ :

Property of external angle: External angle in a triangle is equal to the sum of two opposite internal angles of a triangle.

i.e. external $\angle DFG$ = $\angle E + \angle EDF$

$\Rightarrow 90+\dfrac{y}{2} = \angle E + y\\\Rightarrow \angle E = 90+\dfrac{y}{2} -y\\\Rightarrow \angle E = 90-\dfrac{y}{2} ....... (2)$

Comparing equations (1) and (2):

It can be clearly seen that:

$\angle DFE = \angle E =90-\dfrac{y}{2}$

The two angles of $\triangle EDF$ are equal hence $\triangle EDF$ is isosceles.

8 0

3 years ago

A hypothesis test has a significance level of 10%. Explain what this significance level represents.

beks73 [17]

In statistical methods, the significance level is a value that is used as a criterion for rejecting a null hypothesis. It used by first looking at the differences between the experimental results and from there the null hypothesis would be determined. Then, we assume that the null hypothesis is true, the probability of the differences is computed by using statistical tools. If the computed probability is less than or equal to the value of the significance level, then you conclude that the null hypothesis should be rejected and that the results are statistically significant. Usually, a significance level of 1% or 5% is used.

6 0

3 years ago

Read 2 more answers