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Angelina_Jolie [31]

3 years ago

10

(2.01)

1 answer:

Diano4ka-milaya [45]3 years ago

4 0

-4x-10-3=-3x+3
-4x+3x = 10+3+3
-1x = 16
x = -16

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Please help me answer questions 48 and 48 with the working out please. This is very urgent and i’m giving out 8 points not 5!!!

mariarad [96]

Answer: 65°

<u>Step-by-step explanation:</u>

$E=w(t_f-t_o)\\\\E: 10\ cubic\ feet\times \dfrac{1000\ BTU}{1\ cubic\ foot}\times \ 60\%\quad \rightarrow \quad E=6000\ BTU\\\\\\w:50\ gallons\times \dfrac{8\ pounds}{1\ gallon}\quad \rightarrow \quad w=400\ pounds\\\\\\\\E=w(t_f-t_o)\\\\6000=400(t_f-50)\\\\\dfrac{6000}{400}=\dfrac{400(t_f-50)}{400}\\\\.\quad 15=t_f-50\\\\\\.\quad 15=t_f-50\\.\ \underline{+50}\quad \underline{\quad \ +50}\\.\quad 65=t_f$

4 0

3 years ago

What is the relationship between the 6s in 66,0472

vagabundo [1.1K]

They are both in the thousands places

5 0

3 years ago

after five days in her new job, karen has $800 in her bank account. if she is adding exactly $50 to her account each day, when w

Colt1911 [192]

Answer:

After 4 more days

Step-by-step explanation:

The remaining amount of money needed to reach the goal is $200 this is because 1000-800=200

Now we divide the 200 by the amount Karen earns a day

200/50=4

That means after 4 more days Karen will have $1000

8 0

3 years ago

Solve the variable<br>Show ALL steps.<br>-25 + x = 37

vodomira [7]

Answer:

x=62

Step-by-step explanation:

1. add + 25 to both sides because when you have a negative you have to add.

2. When you add 25 to 37 you get 62.

therefore 62 is the answer

6 0

3 years ago

Read 2 more answers

Can someone please help me with these math problems ASAP?!<br> Thanks in advance! ;)

Mamont248 [21]

Answer:

11) Here given Function,

$f(x) = \sqrt{2x-11}$

And, $g(x) = -|0.1|x+5$

For f(x) = g(x)

$\sqrt{2x-11}=-|0.1|x+5$

$2x-11=(-|0.1|x+5)^2$

$2x-11=0.01x^2 - 10|0.1|x+25$

$2x=0.01x^2 - 10|0.1|x+25+11$

$2x=0.01x^2 - 10|0.1|x+36$

$0.01x^2 - 10|0.1|x - 2x+36=0$

When we solve this equation,

We found,

x = 12.5227 ≈ 12.53

Thus, the required solution is, x = 12.53

12) Here the height of rocket A in x second,

$f(x) = -16x^2+74x+9$

And, The height gain by the rocket B in x seconds,

$g(x) = -16x^2+82x$

If at x seconds both A and B gain the same height,

That is, f(x) = g(x)

⇒ $-16x^2+74x+9= -16x^2+82x$

⇒ $74x + 9 = 82x$

⇒ $82x - 74x = 9$

⇒ $8x = 9$

⇒ x = 1.125 ≈ 1.13

Thus, the required solution is x = 1.13 seconds (approx)

4 0

3 years ago