1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kaylis [27]
3 years ago
15

Evaluate 10 • [2 + (24 – 8)] ÷ 4

Mathematics
2 answers:
rjkz [21]3 years ago
6 0
24-8 would be? right 16 so the 16+2=18 the times 10 would be 180/4 would be.45
kifflom [539]3 years ago
3 0
10 • [2 + (24 – 8)] ÷ 4 = 10 <span>• (2 + 16) </span>÷ 4 = 10 • 18 ÷ 4 = 180 <span>÷ 4 = 45.
</span>
You might be interested in
2ND QUESTION. PLEASE PLEASE HELP. 20 POINTS!!!!!!!!ANSWER IN FUL SENTENCES
kupik [55]

Answer:

i dont know what it means but the right image is 4 times larger than the left image

Step-by-step explanation:

6 0
3 years ago
There are 27 students in Ms. Langley's
Yuliya22 [10]

Answer:

405 Problems

Step-by-step explanation:

  • One student in class has 15 problems.
  • There are 27 students in the class.

Let's <u>multiply</u> 15 by 27.

15*27=405

<em>In all, there would be 405 problems assigned to the whole class.</em>

8 0
3 years ago
EASY QUESTION
Ostrovityanka [42]
The correct answer would be D, the median 86.5.

In this set of data most of the values are in the 80's or 90's. There is only 1 number that is outside of this range, that is the value 0. It is an outlier. 

When we have an outlier, the median generally gives us the better measure of central tendency.
6 0
3 years ago
The ​half-life of a radioactive element is 130​ days, but your sample will not be useful to you after​ 80% of the radioactive nu
gtnhenbr [62]

Answer:

We can use the sample about 42 days.

Step-by-step explanation:

Decay Equation:

\frac{dN}{dt}\propto -N

\Rightarrow \frac{dN}{dt} =-\lambda N

\Rightarrow \frac{dN}{N} =-\lambda dt

Integrating both sides

\int \frac{dN}{N} =\int\lambda dt

\Rightarrow ln|N|=-\lambda t+c

When t=0, N=N_0 = initial amount

\Rightarrow ln|N_0|=-\lambda .0+c

\Rightarrow c= ln|N_0|

\therefore ln|N|=-\lambda t+ln|N_0|

\Rightarrow ln|N|-ln|N_0|=-\lambda t

\Rightarrow ln|\frac{N}{N_0}|=-\lambda t.......(1)

                            \frac{N}{N_0}=e^{-\lambda t}.........(2)

Logarithm:

  • ln|\frac mn|= ln|m|-ln|n|
  • ln|ab|=ln|a|+ln|b|
  • ln|e^a|=a
  • ln|a|=b \Rightarrow a=e^b
  • ln|1|=0

130 days is the half-life of the given radioactive element.

For half life,

N=\frac12 N_0,  t=t_\frac12=130 days.

we plug all values in equation (1)

ln|\frac{\frac12N_0}{N_0}|=-\lambda \times 130

\rightarrow ln|\frac{\frac12}{1}|=-\lambda \times 130

\rightarrow ln|1|-ln|2|-ln|1|=-\lambda \times 130

\rightarrow -ln|2|=-\lambda \times 130

\rightarrow \lambda= \frac{-ln|2|}{-130}

\rightarrow \lambda= \frac{ln|2|}{130}

We need to find the time when the sample remains 80% of its original.

N=\frac{80}{100}N_0

\therefore ln|{\frac{\frac {80}{100}N_0}{N_0}|=-\frac{ln2}{130}t

\Rightarrow ln|{{\frac {80}{100}|=-\frac{ln2}{130}t

\Rightarrow ln|{{ {80}|-ln|{100}|=-\frac{ln2}{130}t

\Rightarrow t=\frac{ln|80|-ln|100|}{-\frac{ln|2|}{130}}

\Rightarrow t=\frac{(ln|80|-ln|100|)\times 130}{-{ln|2|}}

\Rightarrow t\approx 42

We can use the sample about 42 days.

7 0
3 years ago
Math problem need help ​
ira [324]
There is a 1/4 chance to pull a non-yellow card
4 0
3 years ago
Other questions:
  • Does the point (2, 6) lie on the circle shown? Explain.
    15·2 answers
  • 7)
    10·1 answer
  • A salesperson earns $200 per week plus a commission equal to 4% of her sales. This week her goal is to earn no less than $450.
    12·1 answer
  • Dana's car averages 28 miles per gallon of gas, and it currently contains 1 gallon of gas. If
    5·2 answers
  • Explain how the steps in how to solve the equation in the picture. 13=7+p (3 sentences or more.)​
    13·1 answer
  • Can you help me please I’ll give brainliest
    11·1 answer
  • Write the equation of the graphs which have m=2, c = 1
    11·2 answers
  • Whats the perimiter of the following rectangle? The side says x - 2 and the bottom says 2x + 1​
    10·1 answer
  • Please help me guys ?
    13·2 answers
  • Write the equation of a line that is perpendicular to y=5 and that passes through the point (−7,−5)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!