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
ZanzabumX [31]
2 years ago
12

Which addition does this model represent.​

Mathematics
1 answer:
Elina [12.6K]2 years ago
5 0
It represents the first one 3+(-1)
You might be interested in
If a quantity increases by 25% and then decreases by 25%, will that result be the original quantity? Explain.
alexandr1967 [171]
<span>If a quantity increases by 25% and then decreases by 25%, will that result be the original quantity? Explain.
Let’s try to be able to know the answer:
=> Let’s have 10 as the value
Increase by 25%
=> 10 + 25%
=> 10 * .25 =  2.5
=> 10 + 2.5 = 12.5 the new value
Now, decrease this by 25%
=> 12.5 – 25%
=> 12.5 * .25 = 3.125
=> 12.5 – 3.125 = 9.375 or 9.4
Thus, the given statement is false.

</span>



3 0
3 years ago
Q11.
Kamila [148]

Answer:

Step-by-step explanation:

The area of a trapezium is given as;

Area = \frac{1}{2}(a + b)h

where: a is the length of the upper side, b is the length of its base and h is its height.

This implies that; a = x - 4, b = x + 5, h = 2x and area = 351

Thus,

351 =  \frac{1}{2}((x - 4) + (x + 50)) 2x

      = (x - 4 + x + 5) x

531 = (2x + 1) x

      = 2x^{2} + x

So that;

2x^{2} + x - 531 = 0

This gives a quadratic equation.

5 0
3 years ago
Plzz answer I don't understand
nadezda [96]
Height is 18 for question 3.
4 0
3 years ago
Cobalt-60 has an annual decay rate of about 13%.
melomori [17]
The answer will be c
3 0
3 years ago
Read 2 more answers
Pls :( can someone help me (Circumference and area) !due today!
yKpoI14uk [10]
Using pie to solve:
Circumference: 43.98 (rounded)
Area: 153.94 (rounded)

Using 3.14 for pie
Circumference: 43.96
Area: 153.86
8 0
3 years ago
Other questions:
  • It is 8th grade math please get it right. My Dad gave this to me
    9·1 answer
  • Write a recusive rule for a sequence where every term is the same.
    15·1 answer
  • 22. Which of the following is recommended as a way to prevent vehicle backover deaths?
    15·1 answer
  • What is the contrapositive of "If it is Tuesday then Marie has soccer practice?
    9·1 answer
  • An appliance store delivers large appliances using vans and trucks. When loaded, each can holds 6 appliances and each truck hold
    9·1 answer
  • Critique Reasoning: A student says that the perimeter of a rectangle with side lengths (2x – 1) inches and 3x inches can be writ
    13·1 answer
  • A triangle has sides with lengths of 3 millimeters, 4 millimeters, and 5 millimeters. Is it a right triangle?
    12·1 answer
  • Find the missing side of the triangle, leave answer in simplest radical form.
    9·1 answer
  • I’m slow , can i get help on this asap please ?
    10·1 answer
  • !!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!