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4 years ago

WILL GIVE BRAINLYEST AND A LOT OF POINTS HELPPPPPP NOW Use the coordinate grid to determine the coordinates of point P:

Mathematics

1 answer:

oksian1 [2.3K]4 years ago

3 0

Answer:

Step-by-step explanation:

next time take a deep breath

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What percentage is represented by the diagram bellow?

sergey [27]

Answer:

c. 130%

Step-by-step explanation:

the first box is 100%

the second box is 30%

just add them together

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2 years ago

Simplify the expression.<br><br> 5(2 + (−9)) + −25

mrs_skeptik [129]

Answer:

-60

Step-by-step explanation:

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3 years ago

Please help me with this question please thank you for your help and time please help me

FromTheMoon [43]

the blank space K is 21. since it is increasing by 7 you add 14+7= 21

4 0

4 years ago

Question 2 (1 point)

Salsk061 [2.6K]

4x+8=-x+10.
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sorry didn’t know how to put it into words

3 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