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3 years ago

Help ASAP I’ll give u 42 points

Mathematics

1 answer:

GREYUIT [131]3 years ago

5 0

Answer:

where's the passage

Step-by-step explanation:

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Write each number In scientific notation

REY [17]

$1.) 108,000,000 =1.08\times 10^8
\\2.) 0.5943=5.943\times10^{-1}
\\3.) 42=4.2\times10^1
\\4.) 0.0000673=6.73\times10^{-5}
\\5.) 0.0056=5.6\times10^{-3}
$
$6.) 6004=6.004\times10^3
\\7.) 0.00852=8.52\times10^{-3}
\\8.) 24,631,500=2.46315\times10^7
\\9.) 89450=8.945\times10^4
\\10.) 0.005702=5.702\times10^{-3}$
$11.) 8,005,000,000=8.005\times10^9
\\12.) 0.00012805=1.2805\times10^{-4}$

3 0

3 years ago

Problem Page

Montano1993 [528]

Answer:

425 mm

Step-by-step explanation:

The ratio of compound A to compound B is 5 is to 6.

So, we can say that the total ratio is of 11 parts (5+6=11).

If the chemist wants a total of 935 mm of the drug, then each of the 11 parts are worth:

$\frac{935}{11}=85$

From the ratio, we know that Compound A is 5 parts. So:

$85*5=425$

425 mm of Compound A is needed.

6 0

2 years ago

Evaluate the expression when x = –11.

Aleksandr [31]

2x - 19
Let's substitute the value of x in the equation

2 ( -11 ) - 19
-22 - 19
-41

So correct option is D.

Hope this helps you.. :)

5 0

3 years ago

Read 2 more answers

A library is open til' 5:00 P.M. On Wednesdays, the library closes 2 hours early. How many hours for a month is the library open

svet-max [94.6K]

So
if you assume that the month has 30 days and that the library opens at midnight, then
24 hours in a day
5 pm=12+5=17 hours
on wednessday=17-2=15 hours
wednessday=1/7 of week
so we find 1/7 of 30 which is 30/7=4 and 2/7
then subtract that from 30
30-4 and 2/7=25 and 5/7

ok so then we have
25 and 5/7 days is 17 hours and
4 and 2/7 days is 15 hours
so just multipy them and add

25 and 5/7 times 17=437.143 hours
4 and 2/7 days times 15 =64.2857
add

437.143+64.2856=501.429
so aprox 501.429

the real equation is $[(\frac{1}{7})(n)(15)]+[ (\frac{6}{7}) (n)(17)]=hours$ where n represents the number of days in the month

apros 501.429

8 0

3 years ago

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the

devlian [24]

Answer:

The rocket will reach its maximum height after 6.13 seconds

Step-by-step explanation:

To find the time of the maximum height of the rocket differentiate the equation of the height with respect to the time and then equate the differentiation by 0 to find the time of the maximum height

∵ y is the height of the rocket after launch, x seconds

∵ y = -16x² + 196x + 126

- Differentiate y with respect to x

∴ y' = -16(2)x + 196

∴ y' = -32x + 196

- Equate y' by 0

∴ 0 = -32x + 196

- Add 32x to both sides

∴ 32x = 196

- Divide both sides by 32

∴ x = 6.125 seconds

- Round it to the nearest hundredth

∴ x = 6.13 seconds

∴ The rocket will reach its maximum height after 6.13 seconds

There is another solution you can find the vertex point (h , k) of the graph of the quadratic equation y = ax² + bx + c, where h = $-\frac{b}{2a}$ and k is the value of y at x = h and k is the maximum/minimum value

∵ a = -16 , b = 196

∴ $h=-\frac{196}{2(-16)}$

∴ h = 6.125

∵ h is the value of x at the maximum height

∴ x = 6.125 seconds

- Round it to the nearest hundredth

∴ x = 6.13 seconds

4 0

3 years ago