Can someone help me please?

Answer:

74 days

Step-by-step explanation:

The computation is shown below;

The proportion that remains left after d days is

p = (1/2)^(d ÷ 100)

In the case when the proportion is 60%

So,  

0.60 = 0.50^(d ÷ 100)

Now

log(.60) = (d ÷ 100)log(.50)

100·log(.60) ÷ log(.50) = d = 74 days

Answer:

B

Step-by-step explanation:

As it is mentioned in the question that the mice grows at a rate of 7%, it would be answer B. Hope this helps, thank you !!

Answer:

The elevation is 28 meters.

Step-by-step explanation:

This is pretty obvious because it says that the bird is above the ocean, not below. So, it is positive.

Hope this helps! :)

Answer:

35 hours

Step-by-step explanation:

Clara worked for 35 hours because when you do $315/9 it equals 35. So 35 represents the hours she worked last week, and then the equation would just be, 315/9.

Answer:

4

Step-by-step explanation:

8(6+2x)

hope that helps^^

Answer:

Désolé mec mais je n'ai pas compris ta question

Answer:

y=2x+2  and increasing

Step-by-step explanation:

we see there is a pint (0,2)  so the y intercept is 2, we know the slope is 2 because the slope formula can be used on ay two points, for example (0,2) and (1,4)    4-2 is 2 and 1-0 is 1.    2/1 =2 so the slope is 2

[tex]10x-25+8[/tex]

Simplify:

[tex]10x+-25+8[/tex]

Combine Like Terms:

[tex](10x)+(-25+8)\\10x+-17(ANSWER)[/tex]

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Answer:

Y=-2x+6

Step-by-step explanation:

Answer:

530.66 m²

Step-by-step explanation:

The equation to find a circle's area is [tex]\pi[/tex][tex]r^{2}[/tex]. We just need to plug in the radius.

[tex]\pi[/tex][tex]13^{2}[/tex]

= 3.14*169

= 530.66

Hope this helps you and have a great day! o(*^v^*)o

Answer:

The answer is B

Step-by-step explanation:

Answer:

Salma, joe, and alan sent 14, 69, and 23 text messages respectively

Step-by-step explanation:

Given that Salma, joe, and alan sent a total of 106 text messages during the weekend, it means that

s + j + a = 106 where s, j, and a are the number of messages sent by Salma, joe, and alan respectively

Given salma sent 9 fewer messages than alan

s = a - 9

Joe sent 3 times as many messages as alan

j = 3a

hence

a - 9 + 3a + a = 106

5a - 9 = 106

5a = 106 + 9

5a = 115

Divide both sides by 5

a = 115/5

= 23

s = 23 - 9

= 14

j = 3* 23

= 69

Answer:

Step-by-step explanation:

infinite

The height of up in the tree was the bald eagle is, 352.5 feet

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.

For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

You measure the angle of elevation to the eagle to be 67 degrees.

And, The angle of elevation to the eagle to be 67 degrees.

Now, Let the height of up in the tree was the bald eagle is, x

Hence, We can formulate;

⇒ tan 67° = x / 150

⇒ 2.35 = x / 150

⇒ x = 2.35 × 150

⇒ x = 352.5 feet

Thus, The height of up in the tree was the bald eagle is, 352.5 feet

Learn more about the divide visit:

https://brainly.com/question/28119824

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Answer:

A I THINK IM SORRY IF IM WRONG

Step-by-step explanation:

Answer:

It is the second one

Step-by-step explanation:

Answer:

10/7 feet

Step-by-step explanation:

Let e = Ethan

k = Kayla

The following equations can de derived from the equation :

1/2 e = 2/3k

multiply both sides of the equation by 2

e = 4/3k --- 1

e + k = 10 --- 2

Substitute for e in equation 2

4/3k + k = 10

7/3k = 10

multiply both sides of the equation by 3/7

k = 30/7

Substitute for k in equation 1

e = (4/3) x 30/7 = 40/7

difference in length = 40/7 - 30/7 = 10/7

Answer:

27 years

Step-by-step explanation:

21 × 2 = 42

42 - 15 = 27

Answer: -20v^3 - 30x^2 +20

Step-by-step explanation:

simply multiply each term inside of the parentheses by -5.

Answer:

20v³ + 20 - 30x²

Step-by-step explanation:

multiply -5 by all three terms inside parentheses

(-5)(-4v³) + (-5)(-4) + (-5)(6x²)

20v³ + 20 - 30x²

Answer:

Step-by-step explanation:

Answer:

y = - 6x - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 2, 9) and (x₂, y₂ ) = (0, - 3)

m = [tex]\frac{-3-9}{0+2}[/tex] = [tex]\frac{-12}{2}[/tex] = - 6

The line crosses the y- axis at (0, - 3 ) ⇒ c = - 3

y = - 6x - 3 ← equation of line

[tex]42 \frac{1}{2} + 37 \frac{4}{5} [/tex]

[tex]42 \frac{5}{10} + 37 \frac{8}{10} [/tex]

[tex] \frac{5}{10} + \frac{8}{10} = \frac{13}{10} = 1 \frac{3}{10} [/tex]

[tex]79 + 1 \frac{3}{10} = 80 \frac{3}{10} [/tex]

[tex]80 \frac{3}{10} \: \:miles \: or \: 80.3 \: miles[/tex]

//

Just double check that I did the right calculations

Answer:

He made 35% of his shots he did not make 65& of his shots

Step-by-step explanation:

7/20=35%, 20/7=65%

Answer:

0.124$

...............

you can simply divide the price of the pencils = 1•49$

by the number of pencils bought = 12

1•49/12

= 0•124$

Answer: 0.124166667 U.S. dollars

((1 U.S. dollar) + (49 U.S. cents)) / 12 =

0.124166667 U.S. dollars

Answer:

6.25π

Step-by-step explanation:

area = πr^2

Answer:

4.32

Step-by-step explanation:

Call the unknown number = x

We have: 1000x = 4320

=> x = [tex]\frac{4320}{1000}[/tex] = 4.32

=> The number we need to find is 4.32

Answer:

4.32

Step-by-step explanation: