Mary is 21 years old. Her age is 9 years more than 3 times Henry’s age. Which equation can be used to determine x, Henry’s age in years?

HELP ASAP PLEASE

A: 3x + 9 = 21
B: 21 + x = 3(9)
C: 9 + 21 = 3x
D: x + 9 = 21

Answer:

i think its a

Step-by-step explanation:

Answer:

21 = 9+3x or A

Step-by-step explanation:

the answer is a :)

To subtract integers you…
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Evaluate (Two-fifths) cubed. Check all that apply.
The exponent is Two-fifths.
The expanded form is (Two-fifths) (two-fifths) (two-fifths).
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(Two-fifths) cubed = StartFraction 6 Over 15 EndFraction
(Two-fifths) cubed = StartFraction 8 Over 125 EndFraction

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27.2
E E
С
What is the measure of ZD in degrees?
A
27.2
B
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OD
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Pls help me and thank you!

A weightlifter is using a weightlifting bar that weighs 45 pounds. If x represents the amount of weight that the weightlifter puts on the bar and y represents the total amount that the weightlifter lifts, with the weight of the bar included, which of these functions models this situation

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Isabelle is plotted a pentagon on a grid. So far, she has plotted and connected the three points shown on the grid below. To complete the pentagon, she can choose only from the points below.
(2.0) (-2,0), (-2, 4), (2, 4)
How can Isabelle complete her pentagon?
Connect the point already at (0-2) to a new point at (2.0), and then connect
(2.0) to (-2,4)
Connect the point already at (0-2) to a new point at (-2, 0), and then connect (-2, 0) to (-2. 4).
Connect the point already at (0-2) to a new point at (-2, 0), connect (-2, 0) to (24), and then connect (2,4)
to (-2.4)
Connect the point already at (0-2) to a new point at (2.0), connect
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Mark this and retum
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Nex
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1.
Simplify: 5 + p > 3
p -2
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Please help me my Math Grade Is a D-

yes heavenly father, help me through these tough ways of life, and answer for me

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B. (0.75n + 0.55p) + 0.0625(0.75 + 0.55p)

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Between the 4 and the 5

Between the 5 and the 7

Between the 7 and the 8

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Please help ill give brainlest

can someone please help me with these questions, if you can thank you.

PLZ ANSWER ASAP WILL MAKE BRAINLIEST FOR BEST ANSWER AND EXPLAIN YOUR ANSWER
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Helpppppp noww pleaseeee

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