A study of a population of 1,200 frogs revealed that 12 out of every 180 frogs in the population have spots on their back. Based on the results of this study, how many frogs do not have spots on their back? Explain.

Answers

Answer 1

Answer:

80 spotted frogs

Step-by-step explanation:

We can write a ratio

spotted frogs:frogs

12:180

x:1200

To solve we just multiply 12*6.66667 (because this is what we multiplied 180 to get to 1200)

the answer is 80


Related Questions

᪥20 POINTS᪥

21(x-4)+2=?
A. 21x-2
B.107x
C.21x-82
D.27x

Answers

Answer:

C

sorry if I'm wrong.

150 pounds to 135 pounds, What's the percent of change?

Answers

Answer:

The percent change from 150 lbs. to 135 lbs. is a 10% change:

(135-150)/150 x 100

-15/150 x 100

-0.1 x 100

-10% change

10% decrease

Your answer is: 10% change

Round to the nearest tenth if necessary.

Find the distance between the two points.

(9, 12), (–2, 7)


146

20.2

12.1

16

Answers

Answer:

12.1 is the distance between the two points

Solve this question for BRAINLIEST!

Answers

Answer:

3x+1

Step-by-step explanation:

2(3x + 7) = 6x - 2
Solve for x pls

Answers

6x + 14 + 6x - 2
(6x + 6x) + (14 - 2)
12x+12

Answer:

no solution

Step-by-step explanation:

6x+14=6x-2

-6x       -6x

14=-2

+2  +2

16=0

so it ould be no solution

Hope this helped :)

dont get mad if it's wrong pls :) give me brainliest

In ABC, M belongs on AB so that AM:MB = 3:2 and N is the midpoint of CM. If the area of CNB is 35 in^2, find the area of CMB, AMC, ABC.

Answers

Answer:

CMB=50 ACM=75 ABC=125

Step-by-step explanation:

I know it’s too late for your principal test but i need my points.

solve the equation ( exponential equations)

[tex] {3}^{4} = {3}^{2x + 8} [/tex]


Answers

X is -2 I think if you’re solving for x if not 3^4 is 81

In ASTU, S = 3.8 inches, t = 9.8 inches and u=9.6 inches. Find the measure of ZU to
the nearest 10th of a degree.

Answers

Answer: 75.8

Step-by-step explanation:

!!!Quick!!! Barbara can walk 3200 meters in 24 minutes. How far can she walk in 3 minutes? (In Meters)

Answers

Answer:

400 meters

Step-by-step explanation:

First, divide 3,200 by 24 to find the rate, which is 133.3 (repeated).

Now, multiply 133.3 by 3, which is your answer! 133.3*3=399.9. 399.9 is extremely close to 400, so we can just round it to that.

Hope this helps you out and have a wonderful day (✿◡w◡)

Which ordered pair uses the rule used in the table?

Answers

Pretty sure it’s B but I don’t rlly know

Answer:

8,17    Answer B.

Step-by-step explanation:

If 3(x + 5) = 39, then what is x?

Answers

Answer:

x=8

Step-by-step explanation:

X=8 because 39/3 is 13 and 13- 5 is 8 and 5 and 8 add up to make 13 inside the parenthesis.

Answer:

x = 8

Explanation:3(x + 5) = 39Divide Both Sides By 3

3(x + 5) / 3 = 39 / 3

Simplify

x + 5 = 13

Subtract 5 From Both Sides

x + 5 - 5 = 13 - 5

x = 8

- PNW

Layla right her scooter 360 miles every week, she rides 60 miles every 3 hours. At this rate, how many hours will take Layla to ride 360miles.

Answers

Answer:

It will take Layla 6 hours to ride 360 miles

Step-by-step explanation:

The answer is 18 hours. It takes her 3 hours for 60 miles. 60 times 6 equals 360. So she had to ride 60 miles 6 times to get to 360 miles. Which means 6 times 3. So your answer is 18 hours.

a bowling alley charges $3.00 to rent shoes and $1.50 per game bowled , write the eqations ?

Answers

Answer:

y intercept is 3 (shoes)

slope is 1.5 (games bowled)

Step-by-step explanation:

a. angleFJG = angleHJG by SAS
PLEASE HELP

Answers

Answer:

J is midpoint

side FJ = side JH    Def of midpoint

angle GJF = GJH    perpendicular bisector both 90 degrees

JG=JG     reflexive property

Therefore triangle FJG = HJG

Corresponding sides of similar triangles are proportional.
True Or False

Answers

Answer:

TRUE

Step-by-step explanation:

By the definition of similar polygons, corresponding sides of corresponding triangles are in proportion.

ZA and ZB are vertical angles. If m_A = (4x – 13)° and m
ZB = (3x + 19)', then find the measure of ZA.

Answers

Answer:

115 degrees

Step-by-step explanation:

Vertical angles are congruent by the vertical angles theorem.

Hence,

<A=<B

4x-13=3x+19

x=32

Substituting 32 in for x in <A

4(32)-13= 115

Can 10, 11, 2 be measures of the sides of a triangle

Answers

Answer:

Yes

Step-by-step explanation:

The Triangle Inequality Theorem says the sum of any two side lengths of a triangle has to be greater than the third side.

With the measures of 10, 11, and 2, this follows the theorem.

For example, 10 + 11 is 21, which is greater than 2.

11 + 2 is 13, which is greater than 10.

This works for all the combinations, so 10, 11, and 2 can be the side lengths.

It took 8 hours to drive 240 miles. At this rate, how long does it take to drive 90 miles?

Answers

Answer:

It will take 3 hours to drive 90miles.

Step-by-step explanation:

240miles/8hours=30miles/1 hr. 90miles/3hours

Classify this triangle by its sides?

Answers

Answer:

Isosceles

Step-by-step explanation:

Hope this helps you

The answer is the first one

PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG

Answers

Answer:

120

Step-by-step explanation:

Answer:

150

Step-by-step explanation:

Karlene paid $129 plus 6% sales tax for a guitar What was the total cost

Answers

Answer:

136.74

Step-by-step explanation:

solve the equation 4x^2-27x-5=-10x to the nearest tenth

Answers

Answer:10x^2-27x+5. 10x2−27x+5 10 x 2 - 27 x + 5. For a polynomial of the form ax2+bx+c a x 2 + b x + c , rewrite ...

Step-by-step explanation:

The solution of the equation:

x = -0.28 to the nearest tenth.

x = 4.53 to the nearest tenth.

What is a quadratic equation?

For variable x : ax² + bx + c = 0, where a≠0 is a standard quadratic equation, which is a second-order polynomial equation in a single variable. It has at least one solution since it is a second-order polynomial equation, which is guaranteed by the algebraic basic theorem.

Given:

A quadratic equation,

4x²-27x-5 = -10x

Simplifying,

4x²-27x-5 + 10x = 0

4x²-17x-5 = 0

So,

x = {-(-17) ± √(289 + 80)}/8

x = (17 ± √369) / 8

When we take - sign,

x = - 0.276

x = -0.28 to the nearest tenth.

When we take + sign,

x = 4.526

x = 4.53 to the nearest tenth.

Therefore, the values are x = -0.28 and x = 4.53.

To learn more about the quadratic equation;

https://brainly.com/question/17177510

#SPJ2

Help please please please! I will mark you as brainlist !!!

Answers

Answer:

-90

Step-by-step explanation:

I took -90 divided it by 3 which gave me the answer of -30.

Answer:

I think it will be A.

Step-by-step explanation:

Because 9/3 =3 so 90/3 =30 . Same goes with Negative integers!

I will give you 15 pints pls answer

Answers

Answer:

A and C

Step-by-step explanation:

A study found that the average time a person spent exercising each week was 84 minutes, but there could be up to a 3% error in this
number. Which of these could be the actual average time spent?
es
A)
78.32 minutes
B)
81.48 minutes
C)
87.32 minutes
D)
88.64 minutes


B is the answer

Answers

Answer:

C

Step-by-step explanation:

The actual average time = 81.5 minutes

The correct answer is an option (B) 81.48 minutes

What is percent error?

"percent error = [(estimated value - actual value) / (actual value)] × 100"

For given example,

percent error (e) = 3%

estimated average time spent (x) = 84 minutes

We need to find the actual average time spent (y)

Using the formula of percent error,

⇒ e = [(x - y)/y] × 100

⇒ 3 = (84 - y)/y  × 100

⇒ (84 - y)/y = 3/100

⇒ (84 - y) / y = 0.03

⇒ 84 - y = 0.03y

⇒ 84 = 0.03y + y

⇒ 84 = (1.03)y

⇒ y = 81.5 minutes

Therefore, the actual average time = 81.5 minutes

The correct answer is an option (B) 81.48 minutes

Learn more about the percent error here:

https://brainly.com/question/10501147

#SPJ2

i need help finding the missing angle measures​

Answers

Answer:

52 degrees

Step-by-step explanation:

the triangle has to equal 180 to be a perfect triangle so you would add 64+64=128 then subtract that from 180 to get 52.

(SAT Prep) Find the value of x.

Answers

Answer: x=40°

Step-by-step explanation:

The two triangles are congruent (I think it’s called the interior angle proof) so the bottom right angle is also 65°. All angles in a Triangle equal 180°, so 180-(75+65)=40

Answer:

huh

Step-by-step explanation:

just multi ply its not hard

v = u + at
u = 2 and a= -5 and t= 1/2
work out the value of v

Answers

Step-by-step explanation:

v=u+at

v=2+(-5)1

2

v=2-2.5

v=-0.5m/s²

hope it helps.

Answer:

[tex]v = u + at \\ v = 2 + ( - 5)( \frac{1}{2} ) \\ v = 2 + \frac{( - 5)}{2} \\ v = \frac{4 + ( - 5)}{2} \\ v = \frac{ (- 1)}{2} \\ v = - 0.5 \: m {s}^{ - 1} [/tex]

-0.5 m/s is the right answer.

What value of x makes the equation 3(x – 6) – 8x = –2 + 5(2x + 1) true? Explain your answer

Answers

Answer:

x = -7/5

Step-by-step explanation:

3( x - 6 ) - 8x = -2 + 5(2x + 1)

3x - 18 - 8x = -2 + 10x + 5

-5x - 18 = 3 + 10x

-5x - 10x = 3 + 18

-15x = 21

x = [tex]-\frac{7}{5}[/tex]

Which two expressions are equivalent?

Answers

The first one 9(6+x) is equivalent to
9x6+9 multiplied by x
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