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3 years ago

What is the value of x in the equation below? 1+2eX+1 = 9

Mathematics

2 answers:

Monica [59]3 years ago

6 0

The value of x is 1.252762968495368

Solution:

Given that,

We have to find the value of x in given equation

Given equation is:

$1+2e^x + 1 = 9$

Simplify the left side of equation

$2+2e^x = 9$

Move 2 from left side to right side of equation

$2e^x = 9-2\\\\2e^x= 7$

Therefore,

$e^x = \frac{7}{2}\\\\e^x = 3.5$

Taking ln on both sides

ln and e cancels each other each other

$x = ln\ 3.5$

Therefore,

x = 1.252762968495368

Thus the value of x is found

dalvyx [7]3 years ago

4 0

Answer:

the answer is x=27 hope that helps :)

Step-by-step explanation:

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A rectangle has a perimeter of 84 meters and a length of 35 meters. What is the width of the rectangle?

BaLLatris [955]

To find the perimeter of a rectangle, we can use this formula: $2L + 2W$
Where L is the length and W is the width.

We know the perimeter and we know the length and we want to find the width.
Substitute the values back into the formula.

2(35) + 2W = 84
70 + 2W = 84
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So, width is 7 meters long.

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3 years ago

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Marie saved $3,000 dollars last year. She saved $600 in the month of January. What percent of the money she saved last year was

Archy [21]

Answer:

20% of the money was saved from January.

Here is the way to find percentage.

First: work out the difference (increase) between the two numbers you are comparing.

Increase = New Number - Original Number

Then: divide the increase by the original number and multiply the answer by 100.

% increase = Increase ÷ Original Number × 100.

Step-by-step explanation:

5 0

3 years ago

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Urgent help needed. Will mark you brainlest when correct

posledela

Question 7: Option (4)

$A=(3/8)^2=\frac{9}{64}$

Question 8: Option (3)

$A=\frac{1}{2}(17)(9)=76.5$

Question 9: Option (2)

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7 0

2 years ago

For a pair of similar triangles, corresponding sides are always congruent. True or false?

baherus [9]

That's false.
For similar triangles, corresponding angles are congruent.
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4 years ago

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I do not need an explanation, just a simple angle number!

Murljashka [212]

Answer:

Step-by-step explanation:

a + 143 = 180 {Linear pair}

a = 180 - 143

a = 37

37 + 93 + b = 180 {Angle sum property of triangle}

130 + b = 180

b = 180 - 130

b = 40

c + b = 90

c + 40 = 90

c = 90 - 40

c = 50

d + 120 = 180 {Linear pair}

d = 180 - 120

d = 60

? = 60 + 40 {Exterior angle property of triangle}

? = 100

3 0

2 years ago