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3 years ago

8

Which expressions are equivalent. PLEASE HELP ME !!! (photo given)

2 answers:

BabaBlast [244]3 years ago

7 0

Answer:

$\frac{2^{5} }{6^{5} } =2^{5} 6^{-6}$

$=2^5\times (2^{-5} 3^{-5} )$

$=2^{5-5} 3^{-5}$

$=2^{0} 3^{-5}$

$=3^{-5}$

$OAmalOHopeO$

olga2289 [7]3 years ago

3 0

Answer:

B(3^-5) and D(2^5*6^-5)

Step-by-step explanation:

I put the expression in to the calculator and put the answers into the calculator and just picked the ones that matched

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Is this right I need help with this

Margarita [4]

Y axis is counting by 2's
it started at 2 and went up to 6
Y = 4

X axis is counting by 2'2
starts at one goes to 3
X = 2

Slope is 4/2 because rise over run
4/2 = 2
Slope is simplified to 2.

5 0

3 years ago

A bricklayer needs to order 6300kg of building sand.

worty [1.4K]

There are 1000 grams in a kg, so 6300x1000=6,300,000 grams

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3 years ago

What is the vertical component of a 100 pound force applied at 30° above the horizontal?

lutik1710 [3]

That would be 100 * sin 30 = 100 * 0.5 = 50 pounds

4 0

3 years ago

.Resolva as equações, sendo U = Q (separe as respostas por vírgulas). A) 3y - 2 = - y + 4 B) 5 - 4x = x + 3 + 2x C) - 12 - 9x =

Oxana [17]

Answer:

$(A) y=1.5$

$(B)x=\dfrac27$

$(C)x=2\dfrac23$

$(D)x=-5.25$

Step-by-step explanation:

(A)

$3y - 2 = - y + 4\\3y+y=4+2\\4y=6\\y=\dfrac64\\\\y=1.5$

(B)

$5 - 4x = x + 3 + 2x\\5 - 4x = 3 +3x\\5-3=3x+4x\\7x=2\\x=\dfrac27$

(C)

$-12 - 9x = - 4 - 12x\\-9x+12x=-4+12\\3x=8\\x=\dfrac83\\\\x=2\dfrac23$

(D) $- x - 6 + 3x = -2x + 8x + 15$

$2x-6 = 6x + 15\\2x-6x=15+6\\-4x=21\\x=\dfrac{21}{-4} \\\\x=-5.25$

5 0

3 years ago

In an article about the cost of health care, Money magazine reported that a visit to a hospital emergency room for something as

baherus [9]

Answer:

Probability that the cost will be less than $500 is 0.95994 .

Step-by-step explanation:

We are given that Money magazine reported that a visit to a hospital emergency room for something as simple as a sore throat has a mean cost of $348 with a standard deviation of $87.

Let X = cost of a hospital emergency room visit for this medical service

So, X ~ N( $\mu=348, \sigma^{2} =87^{2}$ )

The standard normal z score distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

(a) Probability that the cost will be less than $500 = P(X < $500)

P(X < 500) = P( $\frac{X-\mu}{\sigma}$ < $\frac{500-348}{87}$ ) = P(Z < 1.75) = 0.95994 {from z table}

Therefore, the probability that the cost will be less than $500 is 0.95994 .

3 0

3 years ago