im almost done with my math homework pls help

Answer:

60

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

it would simplify to -4h+8+20

then if you gather like terms it would be -4h+28

Answer:

About 5, 805 grams remaining.

Step-by-step explanation:

We are given that every 27 years, the mass of Element X decreases by half.

We can write an exponential function to model the situation. The standard exponential function is given by:

[tex]\displaystyle f(t)=a(r)^t[/tex]

Where a is the initial amount, r is the rate, and t is the time, in this case years.

Since it is halved, our rate r is 1/2.

Since it is halved for every 27 years, for t, it will be t/27.

Therefore, our function is:

[tex]\displaystyle f(t)=a\Big(\frac{1}{2}\Big)^{t/27}[/tex]

Our initial sample is 7,900 grams. Hence, a = 7900:

[tex]\displaystyle f(t)=7900\Big(\frac{1}{2}\Big)^{t/27}[/tex]

We want to find the remaining amount after 12 years. So, t = 12. Use a calculator:

[tex]\displaystyle f(12)=7900\Big(\frac{1}{2}\Big)^{12/27}\approx5805\text{ grams}[/tex]

After 12 years, there will be about 5805 grams remaining.

Answer:

About 5, 805 grams remaining.

Step-by-step explanation:

We are given that every 27 years, the mass of Element X decreases by half.

We can write an exponential function to model the situation. The standard exponential function is given by:

→ f(t)=a(r)^t

Where a is the initial amount, r is the rate, and t is the time, in this case years.

Since it is halved, our rate r is 1/2.

Since it is halved for every 27 years, for t, it will be t/27.

Therefore, our function is:

→ f(t)=a(1/2)^t/27

Our initial sample is 7,900 grams. Hence, a = 7900:

→ f(t)=7900(1/2)^t/27

We want to find the remaining amount after 12 years. So, t = 12. Use a calculator:

→ f(12)=7900(1/2)^12/27 ≈5805 grams

After 12 years, there will be about 5805 grams remaining.

Answer:

8k+5

Step-by-step explanation:

1/2 6k = 3k

1/2 of 10 = 5

3k+5+5k = 8k+5

Answer:

54

can i get brainly doe?

Answer:

1/5 minutes

Step-by-step explanation:

✓Let the X= a bottle of water

✓Let y= number of minutes it will takes to fill a bottle

We can express the given statement as

1/3 X = 1/15 mins

X= ymins

If we cross multiply the two expression above we have

X/15 mins= X/3 mins * ymins

15 mins * X * y mins= 3X

Divide both sides by X

15 mins * y= 3

Make "y" the subject of the formula

y= 3/15 mins

Divide both numerator and denominator by factor of 3.

y= 1/5 minutes

Hence, the time it will take him to fill the bottle is 1/5 minutes

2/3x(2x+3)

Explanation: 2/3x2(2x+3)

factor out 2/3 from the expression

Nothing it stays the same.

Step-by-step explanation:

Answer:

12.5 pie , 39.25 using pie=3.14, and 39.28 to be exact

Step-by-step explanation:

BTW n=pie

10in= Diameter

5in=Radius

Area=n5^2

= 25n/2

=12.5n

12.5 times 3.14= 39.25

22/7 times 12.5= 39.2857143

Answer:

1.601×10^9

Step-by-step explanation:

800.5 × 2×10^6

1601×10^6

1.601×10^9

Answer:

637.50

Step-by-step explanation:

7,650.00 per year divided by 12 months equals 637.50

Answer:   3

Step-by-step explanation:   When you solve for x you get 2 so when you put that into the equation (2+1) you get 3.  You solve for x but solving this equation (x+5) = (x+1) Hope this helps :)

Answer:

15.3 oz

Step-by-step explanation:

Here, we want to get the value of the new size after reduction

We start with reduction amount

That will be;

15/100 * 18 = 2.7 oz

So we now get what it can hold

That’s;

18-2.7 = 15.3 oz

Answer:

46.80

Step-by-step explanation:

because 45/4%=1.80 and 45+1.80=46.80

Answer:

9.2 x 9.2 x 9.2 (778.688)

Step-by-step explanation:

When you are looking at a cube or 3D figure, most of the time you will have to multiply by the base, length, and height. Since this is a cube, all the sides are the same, so the base, length, and height are also the same. First multiply 9.2 x 9.2 to get 84.64. 84.64 (bxl) now must be multiplied by the height. 84.64 x 9.2 = 778.688.

Answer:

4000m

1k =1000m

Step-by-step explanation:

Answer:

answer is 12

Step-by-step explanation:

2n-8=16

2n=24

n=12

Answer:

x=12

Step-by-step explanation:

divide both sides by 2

16/2=8

x-4=8

x=12

Answer:

90

Step-by-step explanation:

Answer:

x ≤ -4

Step-by-step explanation:

I hope this helps!

Answer:

no

Step-by-step explanation:

It has an equation mark so no.

Answer:

its D

Step-by-step explanation:

I just took the test and it was right

Step-by-step explanation:

the answer from the graph is:

(1 , 3)

Answer:

wheres question two

Step-by-step explanation:

you didnt add it

Answer:

I do not know

Step-by-step explanation:

if you are considering banning me plz do

Answer:

3x + 6 =27

Step-by-step explanation:

A. The solution is 7! First I Subtracted 6 from both sides of the equation, Then I Divided both sides of the equation by the same term. Then I got "7" from doing the following.

B. The solution is the x in the answer which is the amount of juice he poured.

"Diego has 27 ounces of juice. He pours equal amounts for each of his 3 friends and has 6 ounces left for himself"

tell me if i did something wrong  

Answer:

12.8

Step-by-step explanation:

Tan 52° = x/10

x = Tan 52° * 10

x = 1.2799 × 10

x = 12.799

Rounding to the nearest tenth, we have

x = 12.8

Answer:

Step-by-step explanation:

Let's use 52 as our degree.

The adjacent side to 52 is x, and the opposite is 10.

Since it's gonna be opposite over adjacent, we need to use the Tangent ratio.

(tan)

Now let's start our calculations.

Tan52 = x/10

(Tan52)(10) = x

x = 12.79941532

Let's round that to the nearest tenth place.

x = 12.8 units

(Don't forget the degree sign for 52 in Tan52!!!)

Hope that helped! :)

Answer:

Step-by-step explanation:

2x^2+14x=520

x^2+7x-260

x(x+7)=260

so x=13

13x20=260

second

x^2+10x=875

x(x+10)=875

x= 25

25x35=875