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
liq [111]
3 years ago
13

Explain the steps needed to determine the value of the ex below. Be sure to provide the correct value of the expression in your

explanation.
1/2
——
-2/5. + ( -1/4)
Mathematics
2 answers:
yuradex [85]3 years ago
6 0
The correct answer is -1 and 1/2.

First, you need to divide 1/2 by -4/5. To do this, you multiply 1/2 by -5/4. You will get -10/8.

Then, you add -10/8 with -2/8 to get -12/8, or -1 and 1/2.
nekit [7.7K]3 years ago
4 0

Answer:

The answer is -1 and 1/2

Step-by-step explanation:

Hope this helps

You might be interested in
A ladder is leaned against a building. the bottom of the ladder is 11 feet from the building. the top of the ladder is 17 feet a
Dovator [93]
<span>slope = 16/9 and this is your answer</span>
7 0
3 years ago
Lim as x approaches pi/4:
lozanna [386]
\lim_{x \to  \pi /4}  \frac{tan x - 1}{x- \pi /4}  =  \frac{0}{0}
With L` Hospital`s Rule ( ( tan x ) ` = 1/ cos^2 x ) :
\lim_{x \to  \pi /4}  \frac{1}{cos ^{2} x} =  \\ = \frac{1}{cos ^{2} ( \pi /4)}  = \\  \frac{1}{1/2}   =  2


5 0
3 years ago
A line through the origin and (10,4) is showin in the standard (x,y) coordinate plane below. The acute angle between the line an
Snowcat [4.5K]

Answer:

\cos\theta=\frac{10}{\sqrt{116}}

Step-by-step explanation:

To solve this, we can imagine a line drawn directly down from the point (10,4) to the x-axis. This would make a right triangle with length 10 and height 4.

\cos\theta is equal to the length of adjacent leg to the angle divided by the length of the hypotenuse of the triangle. From the picture, we can see the adjacent leg is 10.

We can use Pythagorean's Theorem to find the hypotenuse (let c represent the length of the hypotenuse):

10^2+4^2=c^2

100+16=c^2

116=c^2

c=\sqrt{116}

Thus, we know the adjacent is 10, and the hypotenuse is \sqrt{116}. This means \cos\theta=\frac{10}{\sqrt{116}}.

Hope this helps!

5 0
3 years ago
The life in hours of a battery is known to be approximately normally distributed, with standard deviation σ = 1.25 hours. A rand
Papessa [141]

Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.  

6 0
3 years ago
Rosie spent $25 on a new DVD. What integer represents Rosie’s situation? A 50, B -25, C 0, D 25
Alborosie
I think b or d are answer ...
8 0
3 years ago
Other questions:
  • Which of these statements is true? Question 29 options: A household is a group of people living together in some type of unit, s
    15·1 answer
  • Please help me!!!!!!!!!
    6·2 answers
  • Select the factors of x2 − 10x + 25.
    9·2 answers
  • Anyone wanna join my arsenal server we have giveaways (nitro and robuxs and etc) and tournaments. In tournaments the winner will
    6·1 answer
  • You purchased an investment for $5000 that gains 11% in value every year.
    12·2 answers
  • PLEASE HELP ME <br><br> Find the area of the triangle.
    9·1 answer
  • John leaves his house at Sam. It
    14·1 answer
  • when the length of the diameter of a circle is 20 CM and the length of the cord is 16 CM the diameter and the cord have a common
    11·1 answer
  • Rrrrrrrrrrrrrrrrrrrrrrrrrrrrrr​
    9·2 answers
  • PLS HELP ME I really need help right now (15 points)
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!