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
katrin2010 [14]
3 years ago
14

(–23) – 45 – (–98) = ?

Mathematics
2 answers:
lisabon 2012 [21]3 years ago
6 0
(–23) – 45 – (–98) =–23 – 45 +98=-68+98=30
Liula [17]3 years ago
5 0

Answer:

30

Step-by-step explanation:

(–23) – 45 – (–98)

According to PEMDAS, we do addition and subtraction from left to right

-23 -45 = -68

-68 - (-98)

Subtracting a negative is like adding a positive

-68+ 98 = 30

You might be interested in
Lily swims for 5 hours in stream that has a current of 1 mph. She leaves her dock, swims upstream for 2 miles and then swim back
antiseptic1488 [7]

Answer:

Swimming speed in still water is approximately 1.5 mph

Step-by-step explanation:

Given the speed of the current = 1 mph

distance she swims upstream =2 miles,

the total time = 5 hours.

She swam 2 miles upstream against the  current and 2 miles back to the dock with  the current. The formula that relates  distance, time, and rate is d = r t\ \ \ \ or  \ \ \  t= \frac{d}{r}

Let x be the speed in still water.

Then  her speed with the current is x + 1, and

her speed against the current is x – 1.

Total time is equal to 2 miles with upstream and 2 miles downstream.

\frac{2}{x+1}+\frac{2}{x-1}=5\\\\\frac{2(x-1)}{(x+1)(x-1)}+\frac{2(x+1)}{(x-1)(x+1)}=5\\\\\frac{2x-2}{(x^2-1)}+\frac{2x+2)}{(x^2-1)}=5\\\\\frac{2x-2+2x+2)}{(x^2-1)}=5\\\\4x=5(x^2-1)\\4x= 5x^2-5\\0= 5x^2-4x-5

Now Using quadratic formula to solve above equation we get;

x= \frac{-b \±\sqrt{b^2-4ac}} {2a}\\\\here \ \ a= 5,b=-4,c=-5\\\\x= \frac{-(-4) \±\sqrt{(-4)^2-4\times 5\times-5}} {2\times5}\\\\x=\frac{4 \±\sqrt{16+100}} {10}\\\\x=\frac{4 \±\sqrt{116}} {10}=x=\frac{4 \±2\sqrt{29}} {10}= x=\frac{2 \±\sqrt{29}} {5}\\ x \approx 1.5 \ or \ x = -0.7

Since speed must be positive, Hence speed of still water is about 1.5 miles per hour.

3 0
3 years ago
304,056 trying to represent the value of this number using expanded notation we give the answer but is giving us an error so we
Rina8888 [55]

Answer:

(3 * 100,000) + (0 * 10,000) + (4 * 1000) + (0 * 100) + (5 * 10) + (6 * 1)

Step-by-step explanation:

We want to represent the value of this number using expanded notation

Mathematically, that will be;

(3 * 100,000) + (0 * 10,000) + (4 * 1000) + (0 * 100) + (5 * 10) + (6 * 1)

= 300,000 + 0 + 4000 + 0 + 50 + 6

= 304,057

7 0
3 years ago
Write 8.34* 10^4 in standard from
Kamila [148]

Answer:

83,400

Step-by-step explanation:

Just carry the decimal point over to the right 4 places.

7 0
3 years ago
Read 2 more answers
you need to try to a game that is 320 miles away you have 5.5 hours to get there which what is the closest to minimum average sp
Deffense [45]
So you need to figure out how many hours per mile you need to travel to reach your destination. If you do 320/5.5 you’ll get about 58.2 mph. However you need to round this up to 59 mph to get their in time. Hope this helped!
5 0
3 years ago
With Big Phone Company, you pay $0.39 for the connection and $0.03 per minute
TEA [102]
The answer us D i think
3 0
3 years ago
Other questions:
  • You have just graduated from college and purchased a car for $8000. Your credit limit is  $20,000. Assume that you make no payme
    15·2 answers
  • dani buys. a movie. at walmart on sale. the original. cost is $18 bit is 30% off. and there eis 5% sales tax. what the total cos
    9·1 answer
  • A survey was taken asking participants their age and how many soft drinks they drink a week. The results are displayed in the sc
    5·2 answers
  • -3=6m+5+4 i really need help with thid
    6·2 answers
  • Question 41 pts
    14·1 answer
  • Given the statement “If a line is horizontal, then it has slope equal to zero,” what is its contrapositive?
    6·1 answer
  • X - 62 = 123<br> How should you show your work to isolate the variable and solve the equation?
    6·1 answer
  • -3(y-5)+6y-2 simplify using distributive property and then combine like terms ANOTHER ONE PLEASE
    10·2 answers
  • What is the right answer <br> giving out brainliest
    12·1 answer
  • Two angles are complementary. The larger angle is 46∘46∘ larger than the smaller angle. Find the measure of both angles, and sep
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!