A study of a population of 1,080 frogs revealed that 15 out of every 180 frogs in the population have spots on their back. Based on the results of this study, how many frogs in the population do NOT have spots on their back?​

Answer:

5 students

Step-by-step explanation:

the problem can be represented by this equation:

[tex]8x+4(3)=52[/tex]

[tex]8x+12=52[/tex]

subtract [tex]12[/tex] from both sides

[tex]8x=40[/tex]

divide both sides by [tex]8[/tex]

[tex]x=5[/tex]

plz mark me brainliest. :)

Answer:

y= 65x+5

200 miles from the starting line

Step-by-step explanation:

so sorry no one has helped you but i hope this helps!

in order to find the slope intercept equation of this we have to look at the information. it says charlie has a 5 mile headstart and so that gives us our y-intercept or B

and then it says he goes 65mph meaning every hour he will go 65 miles so that gives us 65x because the x will represent the hours he is driving

so that leaves us with our equation of y=65x+5

and we have the plus 5 at the end because he will always have that 5 mile headstart

and then for the second part of the question it says where will be at 3 o'clock

so that means if he starts at 12 and now its 3 that means he drives 3 hours

so if you plug the 3 hrs into the equation we just created

it will give us 200 miles from the starting point at 12pm.

anyways hope this helps if it did please leave a like, rate it, and give me the brainliest if possible.

have a great day!

Answer:

I believe it is answer B if it's wrong I'm very sorry/

Step-by-step explanation:

Answer:

Step-by-step explanation:

5x-14=8x+4

-5x. +14    -5x. +14

3x=18

x=6

7x-4=3+8x

-7x. -3   -7x -3

x=-7

Answer:

0.1

Step-by-step explanation:

m = 2.5

n = 5

m+(79)/n

2.5 + 7 - 9

=0.5

divide by 5

= 0.1

Answer:

BE congruent to AD

Step-by-step explanation:

not sure

Answer:

ba

Step-by-step explanation:

2x²y - 4xy²

Substituting the value of x & y,

= 2(- 1)² × 1 - 4(- 1) × 1²

= 2 × 1 × 1 + 4 × 1

= 2 + 4

= 6

Hence, The value of the expression is 6.

Answer:

fourth one

Step-by-step explanation:

Answer:

There would be 20 gallons in her pool

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

We have: (I rewrote the function)

[tex]f(z_n)={z_{n-1}} ^2+c[/tex]

Given that:

[tex]\displaystyle c=2-3i \text{ and } z_0 = 1 + 2 i[/tex]

The first iterate will be:

[tex]\displaystyle \begin{aligned} f(z_1)&=(z_0)^2+c \\ &=(1+2i)^2+(2-3i) \\ &= (1+4i+4i^2)+(2-3i) \\ &=1+4i-4+2-3i \\ &=-1+i \end{aligned}[/tex]

The second iterate will be:

[tex]\begin{aligned}f(z_2) &=(z_1)^2+c\\ &=(-1+i)^2+(2-3i) \\&= (1-2i+i^2)+(2-3i) \\&=1-2i-1+2-3i \\&=2-5i \end{aligned}[/tex]

And the third iterate will be:

[tex]\begin{aligned} f(z_3)&=(z_2)^2+c\\ &=(2-5i)^2+(2-3i) \\ &=(4-20i+25i^2)+(2-3i) \\ &=4-20i-25+2-3i \\ &=-19-23i \end{aligned}[/tex]

Hence, our answer is C.

Answer:

3/4 for candy 1/4 for chocolate

Step-by-step explanation:

Answer:

Draw a line from coordinate (3,4) to the x axis and from that point to (0,6)

Rise= 4

Run= 3

slope= 4/3 but is negative

Answer:

This question is difficult to answer w/o context of what to consider but 2 for $8.50

Answer:

3 for 11

Step-by-step explanation:

Because you get more slices for more money

Answer: 3x^2 + 25x + 1

Step-by-step explanation:

3C + B

=> 3(x^2 + 8x + 3) + (x - 8)

=> 3x^2 + 24x + 9 + x - 8

=> 3x^2 + 25x + 1

Answer:

-12x

Step-by-step explanation:

Answer:

-12

Step-by-step explanation:

-4+ -8= -12

anything times 1 is its self so that's ur answer

Answer:

x = 15

Step-by-step explanation:

All angles add up to 180

so,

2x + 4x + 10 + 6x - 10 = 180

combine like terms

12x = 180

divide by 12

x = 15

check it by plugging it in

2x = 2(15) = 30

4x + 10 = 4(15) + 10 = 70

6x - 10 = 6(15) - 10 = 80

30 + 70 + 80 = 180

Answer:

No solution

Step-by-step explanation:

There are no valuables for x that make the inequality true.

Answer:The answer would be $1080.

Answer:

27

Step-by-step explanation:

155 , 152 , 149

term rule = n- 3

30th term

n-3

substitute n for 30

30-3=27

Answer:

68

Step-by-step explanation:

D = -3

an = a1 + (n-1)d

a30= 155 + (30-1)-3

a30 = 155 + 29(-3)

a30 = 155 + (-87)

a30 = 68

Answer:

multiplying by 1.44 is the same as increasing by 44%

Step-by-step explanation:

this is because 44+100 divided by 100 is 1.44

Answer:

8 hours

Step-by-step explanation:

t = time for Bob and Nina to make 60 leashes

Bob = 7 in 2 hr  = 3.5 in 1 hr

Nina = 4 in 1 hr

3.5 + 4 = 7.5 leashes per hour

t = 60/7.5 = 8 hours

Answer:

0.23$

Step-by-step explanation:

16 ounce box of cereal is priced at =3.68$

∴1 ounce box of cereal is priced at=(3.68/16)$

                                                         =0.23$

Answer:

89

Step-by-step explanation:

hope this helps!

please mark me as brainliest! thanks!

Answer:

x= 2

hope it helps!!!!!!!

Answer:

3(7-2y)=9

Because there is no symbol between the 3 and the "(" we can tell that it wants you to multiply.

With the distributive property you must distribute the 3 within (7-2y)

To that you would multiply 7 by 3, and multiply -2y by 3. This would get you:

21-6y=9

To get y you must isolate it, the first step to isolate it is remove the number with no "y" next to it. Which is "21" Also for further problems your way, You should add/subtract/divide/multiple the number that does not have the same or even a variable as the variable you are trying to find to the other side.

In this case it would be subtracting 21 from the left side and subtracting it to the right side which would give us: 6y=-12

(Because there was already a number with no variable: "9" you will subtract 21 from 9 which is why you get -12).

Next you will further isolate the y by removing the -6. "-6y" means -6 multiplied by y. So you will divide -6 from the left side AND the right side.

-6y ÷ -6 = y ; -12 ÷ -6 = 2

y=2

More tips: When you are moving something to the other side always do the opposite to remove it from one side and move it to the other. Example: -12 + y = 5

You want to move the -12 to the right side. So you need to remove "-12" from the left side by ADDING 12 because -12 + 12 = 0.

Now you simply add it to the right.

Another example: 4y = 8

Because 4y is multiplication (4 times y) you must divide it from each side to isolate the y! : y=2

If you divide a number from the left side, you must also divide it from the right side. If you add a number on the left side, you must also add it on the right side. Same goes for subtraction and multiplication. Think like that!

Step-by-step explanation:

So ya

Answer:

y=2

Step-by-step explanation:

3(7 – 2y) = 9

/3              /3

(7-2y)=3

-7       -7

-2y=-4

/-2  /-2

y=2

Answer:

x=3

Step-by-step explanation:

3x - 3 = 6

      +3   +3

3x = 9

divide both sides by 3

x = 3

Hope this Helps!!!