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3 years ago

Double question for 18 points

Mathematics

2 answers:

Whitepunk [10]3 years ago

8 0

Answer: they distribute 38 samples per hour

if x equals sample it would be 38x per hour

Step-by-step explanation:

the second would be 36 per hour also

galina1969 [7]3 years ago

5 0

Answer:

38 samples per hour

if x equals sample it would be 38x per hour

Step-by-step explanation:

the second would be 36 per hour also

Step-by-step explanation:

You might be interested in

Find the exponential function that satisfies the given conditions:

Nady [450]

Answer:

f(t) = 66·0.995^t

Step-by-step explanation:

You can try t=0 and t=1 in each of the formulas to see which one gives values of 66 and 0.5% less than 66, or 65.67.

The first function has an initial value of 0.5, so is not correct.

The second function gives f(1) = 99, so is not correct.

The third function gives f(1) = 65.67, so is correct.

The fourth function gives f(1) = 66.33, so is not correct.

_____

You can realize that the multiplier will be 0.5% less than 100%, so will be 99.5% = 0.995. This number shows up only in the third selection.

4 0

4 years ago

2x + 1=4x-3 solve for x

loris [4]

Answer:

x = 2

Step-by-step explanation:

To start, you want to isolate x.

To do so, get all the x terms to one side.

2x + 1 = 4x - 3

Subtract -4x on both sides.

-2x + 1 = -3

Then, subtract 1 on both sides.

-2x = -4

Finally, divide -2 on both sides.

x = 2

3 0

3 years ago

Ram is 9 years older than Hari. Three years ago, he was two times as old as Hari was. Find their present age.

True [87]

Answer:

Ram: 21, Hari: 12

Step-by-step explanation:

To solve the problem, we can use the following notation. We call:

$r$ = Ram's age at present

$h$ = Hari's age at present

We know that:

- Ram is 9 years older than Hari --> mathematically, this can be written as

$r=h+9$

- Three years ago, Ram was two times as old as Hari was --> mathematically, this can be written as

$r-3=2(h-3)$

where (r-3) is Ram's age 3 years ago, while (h-3) is Hari's age 3 years ago

Substituting eq.(1) into eq.(2), we find:

$(h+9)-3=2(h-3)\\h+9-3=2h-6\\h+6=2h-6\\h=12$

So, Hari's age is 12; therefore, Ram's age is

$r=12+9=21$

4 0

4 years ago

Help me please!! I will mark Brainliest!!!!

murzikaleks [220]

Answer:

Step-by-step explanation:

42 minus 31 is 11

so 11/42 = /100

6 0

3 years ago

Read 2 more answers

(25 points to correct answer)

Kobotan [32]

Answer:

The area of a sector GHJ is $36.3\ cm^{2}$

Step-by-step explanation:

step 1

we know that

The area of a circle is equal to

$A=\pi r^{2}$

we have

$r=8\ cm$

substitute

$A=\pi (8)^{2}$

$A=64\pi\ cm^{2}$

step 2

Remember that the area of a complete circle subtends a central angle of 360 degrees

by proportion find the area of a sector by a central angle of 65 degrees

$\frac{64\pi}{360}=\frac{x}{65}\\ \\x=64\pi (65)/360$

Use $\pi =3.14$

$x=64(3.14)(65)/360=36.3\ cm^{2}$

6 0

3 years ago