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2 years ago

Help I have 11 minutes and like 10 more questions can't move on till anserd only 7th math

Mathematics

2 answers:

Tamiku [17]2 years ago

5 0

Answer:

I'd say the second and third one.

Step-by-step explanation:

Don't take my word for it though unless you want, it's a risk those two are the only two that do the same thing. They would get the same answer no matter what number is imputed for d.

Karolina [17]2 years ago

4 0

Answer:

2nd and third because it makes sense

Step-by-step explanation:

hope it helps

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Solve 1/25 = 5^x+4 ( all exponential)

kati45 [8]

Answer:

$x= -6$

Step-by-step explanation:

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2 years ago

If the price of an item is $60 and there is a sales tax of 4.25%. what is the amount of tax you would have to pay?

anzhelika [568]

Answer: the total is 62.55 so you would be paying $2.55 in tax

Step-by-step explanation:

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2 years ago

Read 2 more answers

4.) The time X (minutes) for a lab assistant to prepare the equipment for a certain experiment is believed to have a uniform dis

Jet001 [13]

Answer:

$P(35-2 < X 35+2) = P(33< X< 37)= P(X$

And using the cumulative distribution function we got:

$P(35-2 < X 35+2) = P(33< X< 37)= P(X$

The probability that preparation is within 2 minutes of the mean time is 0.134

Step-by-step explanation:

For this case we define the following random variable X= (minutes) for a lab assistant to prepare the equipment for a certain experiment , and the distribution for X is given by:

$X \sim Unif (a= 20, b =50)$

The cumulative distribution function is given by:

$F(x) = \frac{x-a}{b-a} , a \leq X \leq b$

The expected value is given by:

$E(X) = \frac{a+b}{2} = \frac{20+50}{2}=35$

And we want to find the following probability:

$P(35-2 < X 35+2) = P(33< X< 37)$

And we can find this probability on this way:

$P(35-2 < X 35+2) = P(33< X< 37)= P(X$

And using the cumulative distribution function we got:

$P(35-2 < X 35+2) = P(33< X< 37)= P(X$

The probability that preparation is within 2 minutes of the mean time is 0.134

8 0

2 years ago

Latrice is given an unknown substance and is asked to identify is based on his properties. She measures its mass as 239.6grams.

Iteru [2.4K]

Answer:

density =8.87g/cm³

From chart the density shows that it is a Colsibro copper alloy, a precipitation hardening copper nickel silicon.

Step-by-step explanation:

This problem bothers on the density of substances

Given data

Mass m of substance = 239.6grams

length l=3cm

width b=3cm

height h=3cm

Volume of substance =l*b*h

=3*3*3=27cm³

We know that the density of the substance ρ=mass/volume

ρ= 239.6/27= 8.87g/cm³

8 0

2 years ago

What is an equivalent way to write the expression without grouping symbols? 7(4−x) Drag and drop the values into the boxes to cr

wlad13 [49]

Answer:

28-7x

Step-by-step explanation:

To write the expression without grouping symbols, multiply the 7 into both terms using the distributive property.

7*4 - 7^x

28-7x

8 0

2 years ago