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ZanzabumX [31]
3 years ago
15

If the probability that it will rain tomorrow is 1/5, what is the probability that it will not rain tomorrow? A 4/5 B 3/5 C 2/5

D 2/10
Mathematics
2 answers:
kipiarov [429]3 years ago
7 0
A. 4/5

P(A)’ = 1 - P(A)

1 - 1/5 = 4/5
Natali5045456 [20]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Because if the chance of rain is 1/5 you just got to think because the remainder is 4/5 so all together it is 5/5

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You received a bill for $82.53. You prepaid on a budget plan for $110.00/ mth. How much was
Yakvenalex [24]

<em>Answer:192.53</em>

<em>Step-by-step explanation:</em>

<em>        You just Add:</em>

$82.53+$110.00=192.53

Your answer is: 192.53

8 0
3 years ago
Solve for x: 8x - 2 - 5x = 8?
Montano1993 [528]
A 3 1/3

Subtract
8x-2-5x=8
-5x
3x-2=8
+2 +2
3x=8
X=10/3
8 0
3 years ago
Bonjour je ne comprend pas cette exercice; si quelqu'un peut m'aider je suis preneuse.
gayaneshka [121]

Answer:

0,24 m

Step-by-step explanation:

La table est un rectanble donc l'angle en  haut à droite est de 90°.

Tu connais donc un angle et le côté opposé à l'angle et tu cherche le côté adjacent.

On sait que tan(â) = \frac{Cote oppose}{Cote adjacent} donc :

tan(40)= \frac{1,27}{x}

\frac{1,27}{tan(40)} = x

donc x ≈ 1,51 m

Le trou du mileu est à \frac{2,54}{2} soit 1,27m du bord.

Donc elle doit taper à 1,51 - 1,27 = 0,24m du trou du milieu.

j'espère avoir été clair.

<h2 />
8 0
2 years ago
Chicken Delight claims that 87% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 or
jeka57 [31]

Answer:

There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.

Decision rule: Reject the null hypothesis if (P-value < level of significance)

Test statistic z=-2.70

Decision: Reject the null hypothesis (0.003<0.010)

Step-by-step explanation:

In this question we have to test an hypothesis.

The null and alternative hypothesis are:

H_0: \pi\geq0.87\\\\H_a:\pi

The significance level is assumed to be 0.01.

The sample of size n=80 gives a proportion of p=61/80=0.7625.

The standard deviation is:

\sigma=\sqrt{\frac{\pi(1-\pi)}{N} }=\sqrt{\frac{0.87*0.13}{80} }=0.0376

The statistic z is then

z=\frac{p-\pi+0.5/N}{\sigma}=\frac{0.7625-0.87+0.5/80}{0.0376} } =\frac{-10125}{0.0376} =-2.70

The P-value is

P(z

The P-value (0.003) is smaller than the significance level (0.010), so the effect is significant. The null hypothesis is rejected.

There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.

Decision rule: Reject the null hypothesis if (P-value < level of significance)

Test statistic z=-2.70

Decision: Reject the null hypothesis (0.003<0.010)

6 0
3 years ago
⚠️⚠️⚠️help⚠️⚠️⚠️⚠️⚠️​
Naddika [18.5K]
The second one should be the answer
7 0
3 years ago
Read 2 more answers
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