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3 years ago

3. Find the value of x. Then, find the measure meSTW =

Mathematics

1 answer:

Ivan3 years ago

4 0

Answer: where’s the problem tho?

Step-by-step explanation:

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PLEASE HELP

lozanna [386]

It’s 46 hope that helps I don’t know how to put a picture of the work I did on here but I ta 46

4 0

3 years ago

Jane wishes to bake an apple pie for dessert. The baking instructions say that she should bake the pie in an oven at a constant

Viktor [21]

Answer:

Therefore $k= \frac{ln2 }{18}$ , A=184

Step-by-step explanation:

Given function is

$T(t)=230 -e^{-kt}$

where T(t) is the temperature in °C and t is time in minute and A and k are constants.

She noticed that after 18 minutes the temperature of the pie is 138°C

Putting T(t) =138°C and t= 18 minutes

$138=230 -Ae^{-k\times 18}$

$\Rightarrow -Ae^{-18k}=138-230$

$\Rightarrow Ae^{-18k}=92$ .....(1)

Again after 36 minutes it is 184°C

Putting T(t) =184°C and t= 36 minutes

$184=230-Ae^{-k\times 36}$

$\Rightarrow Ae^{-36k}=230-184$

$\Rightarrow Ae^{-36k}=46$ .......(2)

Dividing (2) by (1)

$\frac{Ae^{-36k}}{Ae^{-18k}}=\frac{46}{92}$

$\Rightarrow e^{-18k}=\frac{46}{92}$

Taking ln both sides

$ln e^{-18k}=ln\frac{46}{92}$

$\Rightarrow -18k =ln (\frac12)$

$\Rightarrow -18k= ln1-ln2$

$\Rightarrow k= \frac{ln2 }{18}$

Putting the value k in equation (1)

$Ae^{-18\frac{ln2}{18}}=92$

$\Rightarrow A e^{ln2^{-1}}=92$

$\Rightarrow A.2^{-1}=92$

$\Rightarrow \frac{A}{2}=92$

$\Rightarrow A= 92 \times 2$

⇒A= 184.

Therefore $k= \frac{ln2 }{18}$ , A=184

7 0

3 years ago

-10 + 20p + 6p = -16

pshichka [43]

Answer: p= -3/13

Step-by-step explanation:

-10+26p=-16

+10 +10

26p =-6

26 26

p= -3/13

6 0

3 years ago

How can i solve the following <br> 4x-3=2x+7

yan [13]

Answer:

x = 5

Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x.

Add 3 and subtract 2x from both sides of the equation:

4x (-2x) - 3 (+3) = 2x (-2x) + 7 (+3)

4x - 2x = 7 + 3

2x = 10

Next, isolate the x by dividing 2 from both sides of the equation:

(2x)/2 = (10)/2

x = 10/2

x = 5

5 is your answer for x.

6 0

2 years ago

Read 2 more answers

Can someone help me please

Vladimir [108]

$a) \: \cos(39°) = \frac{x}{7} \Leftrightarrow x = 7\cos(39°) \approx5.44 \\ b) \: \sin(46°) = \frac{8}{x} \Leftrightarrow x = \frac{8}{\sin(46°)} \approx11.12$

8 0

3 years ago