3 years ago

I need help with this please. I need to find the volume. For number 7

Mathematics

1 answer:

andrew-mc [135]3 years ago

5 0

Explanatio⁣n i⁣s i⁣n a fil⁣e

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Which equation would you rewrite for the substitution method? Rewrite the equation in slope

kkurt [141]

Y = 5x - 2
y = 3/2x + 9

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3 years ago

W usng a calculator, paper and pencil, or mental math.

Paraphin [41]

Answer:

Mandy will take 67.5 mins to complete the 15 km race.

Step-by-step explanation:

Given:

Mandy runs 4 km in 18 min

She plans to run in a 15 km race.

We need to find how much time required to run 15 km.

4 km =18 min

15 km = time required for 15 km race

By Using Unitary method we get,

Time required for 15 km = $\frac{18\times 15}{4}=67.5 mins$

Hence time required by Mandy to complete 15 km race is 67.5 mins.

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4 years ago

Given sin y = -4/5, where π < y < 3π/2, and cos x = 12/13, where 0 < x < π/2. Find the exact value of sin (x - y).

konstantin123 [22]

Answer:

Solution given:

sin y = -4/5

p/h=4/5

p=4

h=5

b=√{5²-4²)=3

cos y = b/h=-3/5

again

cos x=12/13

b/h=12/13

b=12

h=13

p=√(13²-12²)=5

sin x=p/h=5/13

now

sin[x-y]=sinxcosy-cosxsiny

=5/13×-3/5-(12/13×-4/5)=33/65 is your answer.

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3 years ago

For e^{-x^2/2}, how would the substitution u=\frac{x}{\sqrt{2}}

Komok [63]

I wish i knew the answer to your question but i don't But you should download photomath in the app store it will help you out with your math it gives you the answer and the work to it

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3 years ago

Help as fast as u can

lyudmila [28]

I believe the answer to your question is going to be

D) g(x)=(x+3)^2

Hope I’m correct!

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3 years ago