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zimovet [89]
3 years ago
12

1.Simplify negative 7 and 1 over 8 − negative 9 and 1 over 2.

Mathematics
1 answer:
balandron [24]3 years ago
8 0

Answer:

answer is D : 2 3/8

Step-by-step explanation:

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Please help it is midpoint
almond37 [142]
  • (15,9)
  • (1,-9)

\\ \rm\hookrightarrow (x,y)=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)

\\ \rm\hookrightarrow (x,y)=\left(\dfrac{15+1}{2},\dfrac{9-9}{2}\right)

\\ \rm\hookrightarrow (x,y)=\left(\dfrac{16}{2},\dfrac{0}{2}\right)

\\ \rm\hookrightarrow (x,y)=(8,0)

3 0
3 years ago
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Jimmy buys 5 notebooks that each cost the same amount and 1 binder that costs $7.50. The total cost is $18.75. How much does eac
Varvara68 [4.7K]

Answer:

A. $2.25

Step-by-step explanation:

If you subtract $7.50 from $18.75 you get $11.25, then divide that by 5 and you'll get $2.25.

Hope this was useful.

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3 years ago
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Rewrite sin 225 degrees in terms of its reference angle. You do not need to evaluate sin 225.
ahrayia [7]

Answer:

225°: 45° (π / 4)

3 0
3 years ago
Helium decays to form lithium. 6 2 he → 6 3 li 0 -1 e this type of nuclear decay is called .
PSYCHO15rus [73]

To understand this question, we need some knowledge on radioactive decay. This type of nuclear decay is called a beta decay

<h3>Beta Decay</h3>

This is the process where a radioactive material is fired or naturally emits a beta particle which is equivalent to the lose of an electron and spontaneously becomes an entirely different element.

^6_2He \to ^6_3 Li + ^0_-_1e

The participating actors in this nuclear reaction are

  • helium
  • lithium
  • electron

This is the decay process of helium particle in which it became a lithium particle and emitted an electron in the process.

Learn more on beta decay here;

brainly.com/question/9615302

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8 0
2 years ago
What are the zeroes of y = x^2 – 4x – 5?
iragen [17]
Start by factoring x^2 - 4x - 5. Your two factors will be in the form (x + a) and (x + b). You want two numbers a and b to multiply to -5 and add to -4. Test out various numbers, and you'll find that -5 and 1 work! 

That means your factors are (x - 5) and (x + 1). You can double check this by foiling and seeing if you get your original equation.

Since you want to find the zeroes for that equation, that means y = 0. Remember that anything multiplied by 0 is 0, so you can set each of your factors equal to zero and solve for x. The x-values are your zeros:
x - 5 = 0
x = 5

x + 1 = 0
x = -1

-----

Answer: 5 and -1
6 0
3 years ago
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