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3 years ago

PLEASE HELP!!! FIND X IN THE DIAGRAM PROVIDED!! WILL GIVE BRIAIN!!

Mathematics

2 answers:

Softa [21]3 years ago

7 0

D is your answer. Hi

iren2701 [21]3 years ago

6 0

: $\implies$ $\sf 3x⁰+45⁰+90⁰ = 180⁰$

: $\implies$ $\sf 3x⁰+135⁰ = 180⁰$

: $\implies$ $\sf 3x⁰ = 45⁰$

: $\implies$ $\sf x = \dfrac{45}{3}$

: $\implies$ $\sf x = 15⁰$

hence, last option is right

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Convert 6 kilometers to yards

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1 km=1093.61yards

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Answer= 6561.66 yards

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3 years ago

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ycow [4]

Do you have a picture to go with that? I can’t solve it without any info.

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3 years ago

Customers arrive at a grocery store at an average of 2.1 per minute. Assume that the number of arrivals in a minute follows the

Black_prince [1.1K]

Answer:

a) P(2)=0.270

b) P(X>3)=0.605

c) P=0.410

Step-by-step explanation:

We know that customers arrive at a grocery store at an average of 2.1 per minute. We use the Poisson distribution:

$\boxed{P(k)=\frac{\lambda^k \cdot e^{-\lambda}}{k!}}$

a) In this case: $\lambda=2.1$

$P(2)=\frac{2.1^2 \cdot e^{-2.1}}{2}\\\\P(2)=0.270$

Therefore, the probability is P(2)=0.270.

b) In this case: $\lambda=2\cdot 2.1=4.2$

$P(X>3)=1-P(X\leq 3)\\\\P(X>3)=1-\sum_{x=0}^3 \frac{4.2^x \cdot e^{-4.2}}{x!}\\\\P(X>3)=1-0.395\\\\P(X>3)=0.605$

Therefore, the probability is P(X>3)=0.605.

c) We know that two customers came in in the first minute. That is why we calculate the probability of at least 5 customers entering the other 2 minutes.

In this case: $\lambda=2\cdot 2.1=4.2$

$P(X\geq 5)=1-P(X$

Therefore, the probability is P=0.410.

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3 years ago

Find the area of the shape shown below.

disa [49]

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Explanation:

The area of the rectangle is length*width = 7*3 = 21 square units

The area of the triangle is 0.5*base*height = 0.5*7*3 = 10.5 square units

The combined area is 21+10.5 = 31.5 square units

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3 years ago

Ann purchased a prepaid phone card for $20. Long distance calls cost 11 cents a minute using this card. Ann used her card only o

inn [45]

Answer:

I believe the answer is 33 minutes.

Step-by-step explanation:

20$-16.37 is 3.63$

.11cents × 33 minutes is 3.63$

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3 years ago