Answer:
3x + 9 = 21
Step-by-step explanation:
Let Henry's age be x
Mary's age = 9 + 3x
21 = 9 + 3x
Can also be written as 3x + 9 = 21
P^3+square root 19
Alternative form=7.3589
Answer: C
: Miriam multiplied correctly, but her third fraction should be .S
Step-by-step explanation: Miriam used the unit conversation upside down. The 7000 g should have been multiplied by 1oz/28.35g
The grams cancel and the division of 7000 be 28.35 results in 246.91 oz Round to 252oz.
Alternative: 7kg (2.21 lb/kg)(16oz/lb)=252.5oz
The kg and lbs cancel and the amount of ounces remains.
The answer to this math equation is revealed here proceed at ur own will
Using the power rule, the derivatives are given as follows:
a)
.
b)
.
<h3>What is the power rule for a derivative?</h3>
Suppose we have a power function given by:

The derivative of the function is given by:

Item a:
The function is:

Then the derivative is:

When x = 2, the derivative is:

Item b:
The function is:

Then the derivative is:

When x = 3, the derivative is:

More can be learned about derivatives at brainly.com/question/2256078
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