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3 years ago

What would this equal and showing work x+36=4x

Mathematics

2 answers:

Alex3 years ago

5 0

X+36=4x
-x -x
--------------
36=3x
--- ---
3 3
12=x

irina1246 [14]3 years ago

4 0

Your equation: $x+36=4x$

You need to get "x" by itself so minus "x" from each side because if you do one thing on one side, you have to do it on the other side too

$x-x+36=4x-x$ ⇒ $36=3x$

Now divide 36 by 3 which is 12

Answer: x=12

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Determine if events A and B are mutually exclusive.

gladu [14]

Answer:

A) Not mutually exclusive

Step-by-step explanation:

Given

$P(A) = \frac{1}{4}$

$P(B) = \frac{3}{5}$

$P(A\ or\ B) = \frac{7}{10}$

Required

Determine if they are mutually exclusive or not

Mutually exclusive are defined by:

$P(A\ or\ B) = P(A) + P(B)$

So, we have:

$P(A\ or\ B) = \frac{1}{4} + \frac{3}{5}$

Take LCM

$P(A\ or\ B) = \frac{5+12}{20}$

$P(A\ or\ B) = \frac{17}{20}$

By comparing:

$P(A\ or\ B) = \frac{17}{20}$ ---- Calculated

$P(A\ or\ B) = \frac{7}{10}$ ---- Given

We can conclude that A and B are not mutually exclusive because:

$\frac{17}{20} \ne \frac{7}{10}$

6 0

3 years ago

Ignacio is curious about the average age of cars in the commuter lot at Mis large university. He takes a random

spin [16.1K]

Answer:

Between 12.614 years and 16.386 years

Step-by-step explanation:

Given that:

Mean age (μ) = 14.5 years, standard deviation (σ) = 4.6 years, number o sample (n) and the confidence interval (c) = 90% = 0,9

α = 1 -c = 1 -0.9 = 0.1

$\frac{\alpha }{2} = \frac{0.1}{2} = 0.05$

The z score of $\alpha /2$ is the same as the z score of 0.45 (0.5 - 0.05). This can be gotten from the probability distribution table. Therefore:

$z_{0.05}=1.64$

The margin of error (e) = $z_{0.05}\frac{\sigma}{\sqrt{n} }$ = $1.64*\frac{4.6}{\sqrt{16} }=1.886$

The interval = μ ± e = 14.5 ± 1.886 = (12.614 ,16.386)

4 0

3 years ago

A local pizzeria offers 11 toppings for their pizzas and you can choose any 4 of them for one fixed price. How many different ty

choli [55]

First slot, 11 options
2nd is 10 (1 less than 1st slot)
3rd is 9
4th is 8

11*10*9*8=7920 different pizzas (assuming you can't order all 1 topping)

5 0

3 years ago

Need the answer to<br> 0.1×n equal89.5

ASHA 777 [7]

Answer:

this has been answered before

Step-by-step explanation:

brainly.com/question/805954

8 0

4 years ago

Simplify the expression: -2.3f+0.8f - 12-5

MaRussiya [10]

Answer:

-1.5f - 17

Step-by-step explanation:

-2.3f + 0.8f - 12 - 5

= -1.5f - 17

8 0

3 years ago