Mathematics Middle School

A herd of dinosaurs made paintings in the sand with their claws.
Each baby dinosaur made 15 paintings and each adult dinosaur made 7 paintings. The entire herd made 208 paintings in total, and there were 3 times as many baby dinosaurs as adult dinosaurs.
How many baby dinosaurs and adult dinosaurs were there?

There were ____ baby dinosaurs and ____ adult dinosaurs.

Answers

Answer 1
7x+15(3x)=208
7x+45x=208
52x=208
x=4
adult=4
baby=12
Answer 2

Answer:

Baby dinosaurs-12

Adult dinosaurs-4

Explanation:

15b+7a=208 where b- baby , a is adult

b=3a

Putting the values

15.3a+7.a= 208

45a+7a =208

52a=208

a=4

b=3a= 12

Related Questions

pleaase help withhh tt
his

Answers

decimal: 0.25
percent: 25%

Answer:

Decimal: 0.25

Percentage: 25%

Step-by-step explanation:

PLEASE HELP ITS TIMED!!!!! PLEASE EXPLAIN THE ANSWER TOO!

Answers

D, 7-7 = 0
1-1 = 0
0 x 0 = 0

Help please ASAP!! I will give brainliest!

Answers

Answer:

3/5      1/10

Step-by-step explanation:

1/5 divided by 1/3 is 1/5 times 3 which is 3/5

1/2 divided by 5

= 1/2 divided by 5/1

=1/2 times 1/5

=1/10

Answer:   1) 3/5     2) 1/10

Step-by-step explanation:

1) 1/5 divided by 1/3

then you take the reciprocal so the equation is now 1/5 times 3/1

and you get an answer of 3/5

2) 1/2 divided 5/1 (you put the one under the 5 cuz it's a whole number)

Take the reciprocal of the second fraction and flip the numerator and denominator so you get 1/5.

Then, do 1/2 x 1/5 which equals 1/10.

Hope that helped! :)

I've been stuck on this equation for so long! I need help
2/3 (9 + x) = - 5(4 -x)

Answers

the answer to your equation is x=6

(Btw this is not a QOTD, but I might do another one later)

Mr. Greer’s checking account at the start of November is 995 dollars. The activity in his check register for the first two weeks of November is shown below.

What was the balance of Mor. Greer’s check register after the transaction on November 14?

No LINKS please, and thanks!

Answers

The answer is C $550

Ill mark brainliiest

Answers

Do NOT open links given to you!
√8 = 2 units, 2 units

√7 = √5 units, √2 units

√5 = 1 unit, 2 units

3 = 2 units, √5 units

The volume of the cylinder is 225π cm3. What is the height of the cylinde

Answers

Volume of cylinder = Pi x r^2 x h
Volume = 225pi
r = 3
Substitute values into equations
225pi = Pi x (3)^2 x h
225pi = 9pi x h
Hence h = 225pi/9pi = 25
So h is 25 cm.

The band Leeward charges different prices for its concert tickets based on a concert-goer's age. The total cost, in dollars, of tickets for a adults and c children is 12a+6c. Edgar bought tickets for 4 adults and 6 children.
How much did Edgar pay for tickets?
$

Answers

Answer:

$84

Step-by-step explanation:

ah im having a hard time with this someone answer plz no one is answering the question exept bots trying to scam me.an online retailer charges $5.99 plus 0.65 per pound to ship to electronics purchases.How many pounds is a ... for which the shipping charge is $22.89. ive been having a bit of trouble finding this out,much appretiation if you solve this.Thanks!

Answers

Answer:

26 pounds

Step-by-step explanation:

let x be the number of pounds.

then

5.99+0.65x=22.89

0.65 x=22.89-5.99=16.90

[tex]x=\frac{16.90}{0.65}=\frac{1690}{65}=26\\[/tex]


CAN SOMEONE HELP ME WITH THIS PLZ! <3

Answers

Answer:

D. A = πr^2

Step-by-step explanation:

The formula of the area of a circle is A = πr^2.

the answer is D because to calculate circles area you multiply pi by the radius multiplied by two

At Outfield Sports Shop, Brandon is deciding which set of equipment to buy. He usually only plays with standard baseballs, but he wants to get some plastic baseballs to use when playing with his younger cousins. The store offers a starter set with 2 plastic balls and 5 standard balls, and a deluxe set with 4 plastic balls and 10 standard balls. Do the starter set and deluxe set have the same ratio of plastic baseballs to standard baseballs?

no links please

Answers

Answer:

Yes.

Step-by-step explanation: The Starter Set's ratio is 2:5 and the Deluxe set's ratio is 4:10. . You need to multiply the numerator and the denominator of the Starter Set by 2 and you will see that the ratio 2:5 is equivalent to ratio 4:10.

Sophie has a doll collection with 36 dolls. She decides to sell s dolls to a museum and has r dolls remaining.

What is the independent variable?

Answers

lol xd i jejuducyycya udhydggd 8737377 dhhdhxy

Help me please......

I don't understand this

Answers

Answer:

If you use the area formula it should be really simple.

Step-by-step explanation:

Have you been taught base x height?

Answer:

To find the area, you use a specific formula for the shape.

For the squares and rectangles, multiply the length by the width.

For a triangle do base times height divided by 2.

I would suggest asking your teacher for help with the formula.

Best of Luck :)

who ever gets this right will get a brainlest

Answers

Answer:

20%

Step-by-step explanation:

750 - 20% is 600

so it's D

The answer is 20%. ITS THE LAST ONE

!Help Help Help! lols

Answers

Answer: 44 17/20

This is super easy

Let me explain it in an understanding matter

To find average we need to add the 2 numbers then divide by the amount of numbers there is which is 2.

So the first step is to add 2 3/5 and 87 1/10

The answer to that is 89 7/10

Lastly we need to divide 89 7/10 by 2

The answer to that is 44 17/20

So your answer should be 44 17/20

(I know that's not an answer choice, But that's how i see this question)

A temperature of F degrees Fahrenheit is the same as 5/9
(F–32) degrees Celsius. According to weather records, the highest recorded temperature in the state of Ohio is 113 degrees Fahrenheit.
What is the record high temperature in degrees Celsius?
Write your answer as a whole number or decimal.
degrees Celsius

Answers

Answer:

113 degrees Fahrenheit is 45 degrees Celsius

Step-by-step explanation:

Hope this helps

Florence paid for a booth at a pet show to sell her handmade pet collars. If s is her total sales and c is the cost of her materials, both in dollars, then s–c–20 is her profit, in dollars. Florence made $415 in sales at the pet show and the materials cost her $50.
What is Florence's total profit?

Answers

Answer:

365

Step-by-step explanation:

Answer:

465

Step-by-step explanation:

im not sure

Compare the volume of these two shapes.

left object volume > right object volume
not enough information given
right object volume < left object volume
left object volume =right object volume

Answers

Answer:

left object volume = right object volume

it’s the forth option

Mariana has p times as many photographs as Wyatt. Wyatt has 13 photographs. Write an expression that shows how many photographs Mariana has.

Answers

Answer:

13p

Step-by-step explanation:

13p means 13 times p, which is the expression for p times as Wyatt (13)!

The answer is 13p !!!!!!!!!!!!!!

ayo if u help ima mark brainlistt and it no that hard ig

Answers

Jesus is always the answer
1+1 = 2 2+2 = 4 4+4Can you just subtract the number that you did after one of them and a good night supper but I took them

HELP QUICK... I NEED THIS FOR MATH

Answers

113,000-71,500

41,500
Assets - liabilities = net worth
80750 - 64100 = $16650

And this one too please?

Answers

Answer:

54 in. square

Step-by-step explanation:

First, average the two lengths. Then, multiply that by the height. The average of 6 and 12 is 9, and 9 times 6 = 54.

What is the radius, in centimeters, of a circle that has a circumference of 16π?

8
16
32
64

Answers

Answer: The radius equals 8cm

Answer:

8

Step-by-step explanation:

The circumference of a circle is equal to  π , which is a number  ≈ 3.14 , multiplied by the diameter of the circle.

Therefore,  C  =  π d .

We know that the circumference,  C , is  16 π , so we can say that:

16 π  =  π d

We can divide both sides by  π  to see that  16  =  d .

We now know that the diameter of the circle is  16 .

We also know that the diameter has twice the length of the radius.

In equation form:  2 r  =  d

2 r  =  16

r  =  8

Note that since  2 r  =  d , the equation  C  =  2 π r  holds and can be used in place of C  =  π d .

Pls help need help ASAP 50 points you will be reported if the answer is wrong

Answers

Answer:

the answer might be 36, could be wrong tho

I need help now plz
the question is in the picture gl

Answers

She did make a square corner, it all adds up to same number
Yes she made a square!!!!!!!!!

PLZ ANSWER ASAP IN NEED OF ANSWERS WILL AWARD BRAINLIEST!!!

Answers

Answer:

△ABC is congruent to △YZX

Step-by-step explanation:

please help me. I don't understand.

Answers

Answer: 28.8

Step-by-step explanation:sorry if I’m wrong

ok so you need to multiply the two numbers together and then divide your answer by 3!

Analyze this student's work. What did the student do correctly? What did he do incorrectly?

Answers

I don’t think he did distributive property

PLEASEE HELPP

Kendall's dog will be having four puppies. Kendall performs a simulation by tossing a coin to model whether these puppies will be male or female.

- Let heads (H) = female puppy

- Let Tails (T) = male puppy

What is the estimated probability that at least two of the puppies will be female?

A. 5/10 = 50%
B. 3/10 = 30%
C. 8/10 = 80%
D. 7/10 = 70%

Answers

Answer:

A

Step-by-step explanation:

Answer: A. 5/10 = 50%

Explanation: There are 4 puppies and 2 sides of a coin so is you divide 4 and 2 it gives you the probability of 2 and 2 of 4 is half also described as 50% or 5/10.

Hope this helps!

Samantha made a scale drawing of a car using a scale of 1 inch to 2.5feet her drawing of the car is 5inch long what is the length in feet of the car.... help asap please

Answers

It’s 12.5 feet

Because for every one inch there is 2.5 inches so you would multiply 5 time the 2.5
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