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3 years ago

Plz help i am giving out 35 points and if u get the answer wrong I'll report u so plz don't get it wrong

Mathematics

1 answer:

weqwewe [10]3 years ago

5 0

Answer:

Step-by-step explanation:

Step 1: Write equation

P = 2l + 2w

Step 2: Solve for w

Subtract 2l on both sides: P - 2l = 2w
Divide both sides by 2: (P - 2l)/2 = w
Rewrite: w = (P - 2l)/2

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Tyler buys 3 1/2 pounds of fresh beans. The beans are on sale for $0.98 per pound. Which expressions can Tyler use to calculate

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Answer:

Step-by-step explanation:

3.5 pounds × $0.98/pound = $3.43

3 0

3 years ago

What is the value of g(0) a. 1 b. 0 c. 8 d. 4

uysha [10]

Answer:

c. 8

Step-by-step explanation:

1) $g(x)=8(\frac{1}{2} )^{x}$

2) $g(0)=8(\frac{1}{2} )^{0}$

3) $g(0)=8*1$

4) $g(0)=8$

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2 years ago

PLEASE HELP IF POSSIBLE :)

ollegr [7]

Answer:

JM = 20

Step-by-step explanation:

Find the value of JM

Using similar triangles;

MJ/HN = GJ/HK

GJ+JM/HN = GJ/HK

15+JM/12+16 = 15/12

15+JM/28 = 15/12

Cross multiply

12(15+JM) = 15*28

180+12JM = 420

12JM = 420 - 180

12JM = 240

JM = 240/12

JM = 20

Hence the length of JM is 20

6 0

3 years ago

Integrate e^x(sin(x) cos(x))

Karo-lina-s [1.5K]

$I=\int e^x(\sin(x)\cos(x))dx=\int e^x(\frac{1}{2}\sin(2x))dx=\frac{1}{2}\int e^x\sin(2x)dx$

$\text{If }u=\sin(2x)\to du=2\cos(2x)dx~\text{and}~dv=e^xdx\to v=e^x:\\\\
\text{Using }\int u\,dv=uv-\int v\,du:\\\\
I=\frac{1}{2}(e^x\sin(2x)-\int e^x(2\cos(2x))dx)\\\\
2I=e^x\sin(2x)-2\underbrace{\int e^x\cos(2x)dx}_{I_2}$

Looking for $I_2$ :

$\text{If}~u=\cos(2x)\to du=-2\sin(2x)dx~\text{and}~dv=e^xdx\to v=e^x:\\\\
I_2=e^x\cos(2x)-\int e^x(-2\sin(2x))dx\\\\ I_2=e^x\cos(2x)+2\int e^x(\sin(2x))dx\\\\ I_2=e^x\cos(2x)+2\int e^x(2\sin(x)\cos(x))dx\\\\ I_2=e^x\cos(2x)+4\int e^x(\sin(x)\cos(x))dx=e^x\cos(2x)+4I$

Replacing:

$2I=e^x\sin(2x)-2I_2\iff\\\\2I=e^x\sin(2x)-2(e^x\cos(2x)+4I)\iff\\\\
2I=e^x\sin(2x)-2e^x\cos(2x)-8I\iff\\\\
10I=e^x\sin(2x)-2e^x\cos(2x)\iff\\\\
I=\dfrac{e^x}{10}(\sin(2x)-2\cos(2x))\\\\
\boxed{\int e^x(\sin(x)\cos(x))dx=\dfrac{e^x}{10}(\sin(2x)-2\cos(2x))+C}$

6 0

3 years ago

HELP HELP HELP HELP HELP

gulaghasi [49]

Answer:

the answer is option (c)

3 0

3 years ago