Mathematics Middle School

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

Answers

Answer 1

Answer:

i think its a

Step-by-step explanation:

Answer 2

Answer:

21 = 9+3x or A

Step-by-step explanation:

the answer is a :)

Related Questions

maria gas a bag with 6 red marbles, 6 blue marbles , and 4 green marbles. without looking, maria picks one marble. she does not replace it, and she picks another one. on the first pick, maria gets a green marble. what is the probability that she gets a red marble on her second pick?

Answers

Answer:

2/5

Step-by-step explanation:

HELPPPPPPP!!!!! chose the one you would use pls

Answers

The answer is A! If 1/3 is gone, there’s 2/3 left. To find how much 2/3 is, you would multiply 80 by 2/3

Help me, please Thanks

Answers

Answer:

3, 9618, 152

Step-by-step explanation: pemdas -> parenthesis, exponents, multiply, divide, add, subtract.

3 1918 152 is what i got

Timothy bought 10 cookies for $5.00.

Let x represent the number of cookies purchased, and let y represent the total cost.

Graph the line that represents the proportional relationship.

PLZ use this graph

Answers

Answer:

Below is the graph

Step-by-step explanation:

Try to make the line straight though! :)

Just at every 2 cockies put a mark

Solve for x:

2x+8=11x+25

Answers

Answer

x=1.8 or 1 1/8

Step-by-step explanation:

What is the measurement of angle x (in degrees)?

Explain how you got your answer.

Answers

Answer:

120

Step-by-step explanation:

The answer 140° you just have to subtract the given measure from 180° hope this helps :)

Rewrite the expression in the form 5^n

(5^-8) (5^-10)

Please help :)

Answers

You re write the expression by using the negative exponent 1/5.18 or 10-13
I’m not sure but you have to rewrite it as like 1/5

charlie gas a giant bag of gumballs . He gives half of what he has to his buddy jayden . He gives half of what's left to marinda . Then he gives half of what's left now to Zack . His mom makes him give 5 gumballs left . How many gumballs did charlie begin with ?

Answers

Answer:

8

Step-by-step explanation:

Answer40/2=20 20/2=10 10-5 = 5

Step-by-step explanation:

Help me what is the thing above n help TuT

Answers

Answer:

4. 12

Step-by-step explanation:

Dividing 45 with 4 gives you 11.25, the amount of miles per hour. Dividing 135 with 11.25 gives you 12.

The answer is 12! Sorry if it’s wrong though:)

2. Li bought five lip balms. Each lip balm costs the same amount. She spent a total of $7.25.
(a) Write an equation that represents the situation. Use c to represent the cost of each lip balm.
(b) Represent the equation with a model.
(c) Solve and justify your solution.

Answers

Answer:

a)  5xd=7.25     d=dollars

b)  7.25/5=d

c)7.25/5=1.45

Step-by-step explanation:

Answer:

5 times 7.25=C

Step-by-step explanation:

Then all you need to do is multiply and you will get 36.25

I hoped this help and little I didn't understand everything you meant.

Which of the following is a correct interpretation of the expression 2 - (-5)
A The number that is 5 to the left of 2 on the number line
B The number that is 5 to the right of 2 on the number line
C The number that is 2 to the left of -5 on the number line
D The number that is 2 to the right of -5 on the number line

Answers

Answer:

B

Step-by-step explanation:

when rewriting it, it would be 2+5 because subtracting a negative number is the  same as adding.

so it would be 5 to the right(since you are increasing/adding) to 2 (the beginning/starting point)

I believe B is the correct answer, I’m not sure so I’m sorry if it’s not.

please help me with this question

Answers

Answer:

A

Step-by-step explanation:

put the 2 tires and times it by 2 to get the amount of four tires

Which of the following is a unit rate?

Answers

Answer:

the second one

Step-by-step explanation:

Its measuring by miles per hour

the second one is correct

Please help me I will give you the briain thing and extra points. (image below) 7/13

Answers

Answer:

it is B because the numbers are repeating on the y axis

what is 8 5/6 x 15/20

Answers

Answer:

6 5/8

Step-by-step explanation:

It's free real estate bby gorl    

brainliest for correct answer with work

Answers

Slope is 1/2
You take rise over run
So it goes up like 1 and over 2
Actually since it’s like in the negatives n stuff it’ll probs be like -1/2

1.
Simplify: 5 + p > 3
p -2
p > 8

Answers

Answer:

p > -2.

Step-by-step explanation:

5 + p > 3

5 - 5 + p > 3 - 5

p > -2.

Answer:

p > -2

Step-by-step explanation:


Let x represent the number of adults entering the movie theater and let y represent the cost,in dollars,of admission to the movie theater.Write an equation to illustrate the relationship between the number of adults entering the theater and the cost in dollars for admission

Answers

The correct answer is YES hope this helped
The answer is yes hopefully I’m right

11(n-3)=-4

this is also for my friend

Answers

Answer:

Step-by-step explanation:

Answer:

Step 1: Simplify both sides of the equation.

11(n−3)=−4

(11)(n)+(11)(−3)=−4(Distribute)

11n+−33=−4

11n−33=−4

Step 2: Add 33 to both sides.

11n−33+33=−4+33

11n=29

Step 3: Divide both sides by 11.

11n

11

=

29

11

n=

29

11

Answer:

n=

29

11

Step-by-step explanation:

8x + 3 (3 - x) = 34
A. x = 5
B. x = 2
C. x = 8
D. x = 4

Answers

Answer:

A. x=5

Step-by-step explanation:

8x+3(3-x)=34

We move all terms to the left:

8x+3(3-x)-(34)=0

We add all the numbers together, and all the variables

8x+3(-1x+3)-34=0

We multiply parentheses

8x-3x+9-34=0

We add all the numbers together, and all the variables

5x-25=0

We move all terms containing x to the left, all other terms to the right

5x=25

x=25/5

x=5

I think this is correct.

Answer: its A; x=5

Step-by-step explanation:

8x+3(3-x)=34

distribute the 3 through the parentheses

8x+9-3x=34

then add the like terms

5x+9=34

subtract the 9 to the 34

you shoud get

5x=25

then divide the 5 on both sides and you get your answer of x=5

PLZ ANSWER ASAP WILL MAKE BRAINLIEST FOR BEST ANSWER AND EXPLAIN YOUR ANSWER

Three friends participated in a fund-raising project. Dexter collected 2/5 of the total amount. Carter collected $272 more than Jack. Jack collected $764 how much did the three of them collect altogether?

There were 1,265 people at a boat show. After 1/5 of the adults and 1/3 of the children left, there was an equal number of children and adults at the show. how many people left the show?

Answers

lmâo your all on your own with this one

HELP FAST PLEASEEEE DUE IN 2 MINS!!!!URGENTT
Julie borrowed $850 to purchase a couch. She will pay off the loan after 3 years by paying back the principal plus interest at 6.5% simple interest? How much will she pay back altogether?

Answers

Answer:

julie is broke.....

Step-by-step explanation:

Which equation represents a line that is parallel to the line whose equation is y=-3x?
A) 1/3x+y=4
B) -1/3x=y=4
C) 6x+2y=4
D) -6x+2y=4

Answers

the answer is C!! if you have any more questions you can ask here! ill try my best to help!

132-3 838 38 383

2838440505

I really need help on this question! Thank you!

Answers

Answer:

A

Step-by-step explanation:

We know the following:

[tex]OE=5\\\\FG=4\\\\EF=8\\\\[/tex]

so the segment EF is equal to

[tex]EF=EG+GO+OF\\\\[/tex]

and here we can do a trick :)

[tex]EF=(EG+GO)+GO+(OF+OG)-2GO\\\\[/tex]

you see it's the same

[tex]EF=EO-GO+FG\\\\[/tex]

now we plug the values given

[tex]8=5-GO+4\\\\8=9-GO\\\\GO=9-8\\\\GO=1[/tex]

so it's option A

The answer for your question is A

PLZ ANSWER ASAP WILL MAKE BRAINLIEST FOR BEST ANSWER AND EXPLAIN YOUR ANSWER
There were 1,265 people at a boat show. After 1/5 of the adults and 1/3 of the children left, there was an equal number of children and adults at the show. how many people left the show?

Answers

Answer:

I think the answer is 171.

Step-by-step explanation:

Find the total amount of people that left the show. Convert 1/5 and 1/3 into fractions with common denominators. This makes 3/15 and 5/15. Add the two together and get 8/15. Divide 8 by 15 to find the percent of people that left. About 53%. Multiply 1,265 by .53 and you get 170.45 You can't have 45/100 of a person to do the rounding up to get 171. Check you work by subtracting 171 from 1,265 and get 1094. If you divide this by two you get 547. (547 kids, and 547 adults)

I am pretty sure this is right...I hope this helps!

The graph below shows the number of dimes and nickels in a child’s piggy bank.
Which of the following is the best estimate for the number of each type of coin?

Answers

Answer:

60 dimes 35 nickels

Step-by-step explanation:

Rewrite the expression in the form 5^n

(5^-8) (5^-10)

Answers

Step-by-step explanation:

This problem is all about bases and exponents.  Because we have a quotient and the bases are both 5's, that means that we can use the rule of exponents for quotients to rewrite and simplify:

That's the simplification as long as you are "allowed" to leave the exponent as a negative number.

Which of the following describes a situation in which the total distance a soccer player travels is 0 meter from his starting point?

The player runs 7 meters forward and then runs 7 meters in the opposite direction.
The player runs 3 meters forward and then runs 7 meters in the opposite direction.
The player runs 0 meter forward and then runs 7 meters in the opposite direction.
The player runs 7 meters forward and then runs 0 meter in the opposite direction.

Answers

Answer:

da first one

Step-by-step explanation:

Answer:

the guy on the top is right

Step-by-step explanation:

I took the quiz

For everyone who answered, 6 divided by 3​

Answers

Answer:

2

Step-by-step explanation:

6/3 = 2

Answer:

2

Step-by-step explanation:

Which symbol replaces the box to make the statement true? 2⋅18−18□2⋅[28−3⋅(2+4)]
A.
C. =

Answers

Answer:

2⋅18−18 is less than 2⋅[28−3⋅(2+4)]

Step-by-step explanation:

Answer:

answer is A

Step-by-step explanation:

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