2 years ago

A quantity with an initial value of 510 decays exponentially at a rate of 0.05% every 7

Mathematics

1 answer:

ludmilkaskok [199]2 years ago

7 0

Answer: its c trust me

Step-by-step explanation:

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Substitution:<br><br> y=6x+11<br><br>y-4x=15

german

Answer:

x=2

Step-by-step explanation:

6x+11-4x=15

2x+11=15

2x=4

x=2

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3 years ago

What does -8x + y = 16 solve

frez [133]

Answer:

you divide -8y by both sides and you would so that means that y=-2.

Step-by-step explanation:

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3 years ago

A random representative survey of 100 seventh-graders in Washington Middle School shows that 20 students read 5 or more books ov

DaniilM [7]

20 out of 100 read 5 or more.

20/100 = 0.2

Now multiply the total students by 0..2:

275 x 0.2 = 55

55 people read 5 or more books.

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2 years ago

charlene takes the bus to work in the morning,then walks home for lunch,walks back to work, and finally walks home in the evenin

kolezko [41]

So she walks at least 3 times.The distance is 600 meters So 600·3=1800 meters= 1 kilometers and 800 meters-she going in the single day.

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3 years ago

Read 2 more answers

Integrate sin²2x cos²2x dx

DochEvi [55]

$\sin^2x=\dfrac{1-\cos2x}2$
$\cos^2x=\dfrac{1+\cos2x}2$

From the identities above, you have

$\sin^22x\cos^22x=\dfrac{(1-\cos4x)(1+\cos4x)}4=\dfrac{1-\cos^24x}4$

Applying once more, you have

$\dfrac{1-\cos^24x}4=\dfrac{1-\dfrac{1+\cos8x}2}4=\dfrac{1-\cos8x}8$

So,

$\displaystyle\int\sin^22x\cos^22x\,\mathrm dx=\frac18\int(1-\cos8x)\,\mathrm dx=\frac x8-\frac1{64}\sin8x+C$

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2 years ago