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3 years ago

How does this equation: 1+-✓17/-4 equal -1+-✓17/4.

Mathematics

1 answer:

maxonik [38]3 years ago

8 0

These are not equal.
Try checking it out. using ur calculator

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Please help with this question thanksm

cluponka [151]

Answer: a) 1/64

Step-by-step explanation:

5 0

3 years ago

What is the distance from (3 1/2, 5) to (3 1/2, –12)?

r-ruslan [8.4K]

Answer:

0, 17

3 1/2, 5

0, 17

8 0

2 years ago

Read 2 more answers

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

Solve the problem that’s given in the image

Aleksandr [31]

Answer:

112 cupcakes were mocha

Step-by-step explanation:

44% of 200 is 88 then subtract 88 from 200. hope this helps

3 0

2 years ago

Read 2 more answers

How do I solve this equation?

Gnom [1K]

$2x(4-x)^{-1/2}-3(4-x)^{1/2}=(4-x)^{-1/2}\bigg(2x-3(4-x)\bigg)$

We effectively rewrite the equation as

$\dfrac{5x-12}{(4-x)^{1/2}}=0$

In order for the LHS to be defined, we need to restrict $4-x>0$ , or $x$ . Now, the LHS will vanish when the numerator is 0, which happens for

$5x-12=0\implies5x=12\implies x=\dfrac{12}5$

This value is indeed smaller than 4, so the solution is $x=\dfrac{12}5$ .

8 0

2 years ago