2 years ago

X=1 and y=3 2x+3y-2 plsss helpp <3

Mathematics

1 answer:

Anna [14]2 years ago

6 0

Answer:

Step-by-step explanation:

2x + 3y - 2 =9

(2) + (9) -2 =9

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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

pychu [463]

Answer:

A=152

K= -Ln(0.5)/14

Step-by-step explanation:

You can obtain two equations with the given information:

T(14 minutes) = 114◦C

T(28 minutes)=152◦C

Therefore, you have to replace t=14, T=114 and t=28, T=152 in the given equation:

$114=190-Ae^{-14k} (I) \\152=190-Ae^{-28k}(II)$

Applying the following property of exponentials numbers in (II):

$e^{a}.e^{b}=e^{a+b}$

Therefore $e^{-28k}$ can be written as $e^{-14k}.e^{-14k}$

$152=190-Ae^{-14k}.e^{14k}$

Replacing (I) in the previous equation:

$152=190-76e^{-14k}$

Solving for k:

Subtracting 190 both sides, dividing by -76:

$0.5=e^{-14k}$

Applying the base e logarithm both sides:

Ln(0.5)= -14k

Dividing by -14:

k= -Ln(0.5)/14

Replacing k in (I) and solving for A:

$Ae^{-14(-Ln(0.5)/14)}=76\\Ae^{Ln(0.5)} =76\\A(0.5)=76$

Dividing by 0.5

A=152

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3 years ago

In a card game it is possible to have negative score. If Laura starts with a score is 10 what will be her new score if she loses

Ilya [14]

Answer:

Step-by-step explanation:

10-38=28

$&#:÷&#&;#&$;'ebsjdkeowkdbs;#&$;'fbxjrbxjr

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2 years ago

Solve for "W"<br><br> -1 > 2W + 7

jeka57 [31]

-1>2W+7

-8>2w

w = -8/2 = -4

w>-4

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3 years ago

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What is 1/x^2 in the power of x

Serhud [2]

we have given that $\frac{1}{x^2}$ .

we need to express this interms of power of x .

we know that $\frac{1}{x^n} =x^-n$ .

in place of n we have 2 .so $\frac{1}{x^2} =x^-2$ .

so this will be the expression interms of power of x .

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2 years ago

If 9% of the bar’s weight is iron, how much does the iron weigh

Leya [2.2K]

Answer:

15 pounds

Step-by-step explanation:

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3 years ago

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