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Elden [556K]
3 years ago
6

Two simple questions

Mathematics
1 answer:
frutty [35]3 years ago
3 0
Oh i love these x=4,y=9
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Subtraction of whole numbers is commutative. True or False
strojnjashka [21]
It is False.

If a property is commutative in subtraction it means:  x - y    is the same as y - x.

For example    5 - 3 = 2,  but 3 - 5 = -2  so subtraction is not commutative.

But 5 + 3 = 8   ,   is the same as 3 + 5 = 8.

Addition is Commutative, but Subtraction is not commutative.

So the statement that subtraction of whole numbers is commutative is False.
3 0
3 years ago
What is the inverse of f(x)=x^4+7 for x&gt;0 where function g is the inverse of function f?<br> -
Ann [662]

Answer:

g(x) = \sqrt[4]{x-7},~ x\geq 7

Step by step explanation:

y= f(x) = x^4+7\\\\\text{Replace x with y and solve for y:}\\\\~~~~~~~x = y^4 +7\\\\\implies y^4 = x-7\\\\\implies y = \pm\sqrt[4]{x-7}\\\\ \implies f^{-1}(x) = \pm\sqrt[4]{x-7}

7 0
1 year ago
Question 6 of 10
Usimov [2.4K]

Answer:

The answer is B. 9

Use cosine rule. In this case, I am using SOH and the right triangle:

sin 60°= a ÷ 6 root 3

(6 root 3)(sin 60°)= a

a=9

Step-by-step explanation:

7 0
2 years ago
After 60 minutes a train has moved 60 miles toward its destination.
Fantom [35]

Answer:

1 mile per minute

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
(5x - 7y + 8) + (-y + 6 - 4x) + (9 - 3x + 8y)
Mashutka [201]
The answer is -2x+ 23
8 0
3 years ago
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