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3 years ago

What integer is 15 more than -35?

Mathematics

1 answer:

Anarel [89]3 years ago

3 0

Answer:

The integer is -20

Step-by-step explanation:

Is means equals and more than means add

W = 15+-35

W = -20

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A new clerk in your office is to earn $450 per week. If she works 30.5 hours each week, what is her hourly rate? (Round off your

tatiyna

$450/week

30.5 hours/week

450/30.5 = $14.75

The answer is A (14.75/hour).

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4 years ago

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What’s the value of x ? HELP PLEASEEEEEEE

jasenka [17]

Answer:

ok so, u need to simplify the fraction. but the x value is the number that is on the left side when ur simplifying the fraction. also its the one on top not bottom. hope this helps u!

Step-by-step explanation:

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3 years ago

Order the decimals from least to greatest 48.6, 1.6, 0.13, 153.7, 2.2, 49.2

postnew [5]

Answer:

0.13, 1.6, 2.2, 48.6, 49.2, 153.7

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4 years ago

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Can someone please help me on this problem? I need help on it please!!

8_murik_8 [283]

Answer:

60 m/h

Step-by-step explanation:

1. the basic formula is Time=Distance/Speed;

2. total time is time1 (for 84 miles)+time2 (for 130 miles)=time (4 hours);

3. the time for the first 84 mi. is time1=84/S;

4. the time for the rest 130 mi. is time2=130/(S-10);

5. using all the data of items 2-4, it is possible to substitute into the basic formula and resolve an equation:

$\frac{84}{s} +\frac{130}{s-10} =4; \ => \ 2s^2-127s+420=0;$

$\left[\begin{array}{ccc}s=60\\s=3.5\end{array}$

note, that the value of speed has one condition: s>10. It means, the only value is true: 60 miles per hour.

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3 years ago

Molecules of a toxic chemical eventually decompose into inert substances. Suppose the decomposition time is exponentially distri

koban [17]

Answer:

a) 4.16 years

b) 27.73 years

c) 238.44 years

d) 3,870.53 years

Step-by-step explanation:

Let X be the random variable that measures the decomposition time.

$\bf \lambda =6$

In this case, since the decomposition time is exponentially distributed with a mean of 1/6, we have

$\bf P(X\leq t)=1-e^{-t/6}\Rightarrow P(X>t)=1-(1-e^{-t/6})=e^{-t/6}$

and we must find a t such that P(x>t)=0.5.

$\bf P(X>t)=0.5\Rightarrow e^{-t/6}=0.5\Rightarrow -t/6=ln(0.5)\Rightarrow t=-6ln(0.5)=4.16\;years$

$\bf \lambda =40$

$\bf P(X>t)=0.5\Rightarrow e^{-t/40}=0.5\Rightarrow -t/40=ln(0.5)\Rightarrow t=-40ln(0.5)=27.73\;years$

$\bf \lambda =344$

$\bf P(X>t)=0.5\Rightarrow e^{-t/344}=0.5\Rightarrow -t/344=ln(0.5)\Rightarrow t=-344ln(0.5)=238.44\;years$

$\bf \lambda =5584$

$\bf P(X>t)=0.5\Rightarrow e^{-t/5584}=0.5\Rightarrow -t/5584=ln(0.5)\Rightarrow t=-5584ln(0.5)=3870.53\;years$

5 0

4 years ago