3 years ago

Help ASAP 8th grade algebra

Mathematics

1 answer:

Advocard [28]3 years ago

4 0

They are similar because the corresponding lengths are proportional, 4:6 to is the same as 2:3

:)

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I'LL GIVE BRAINLIEST !!! FASTER please explain how do you get the answer !

aliya0001 [1]

Answer:

Step-by-step explanation:

we have the angle of vertex in the isosceles triangle = 180-2*bottom coner= 180-65/2=50

3 angles in the equilateral triangle are equal to 60

we have 50 + 60 +h =the angle of PQR =180

h=70

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3 years ago

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The arc of the parabola y = x^2 from (3,9) to (4,16) is rotated about the y-axis. Find the area of the resulting surface. Please

Hitman42 [59]

Answer:

156.5

Step-by-step explanation:

Thinking process:

The area can be calculated using the formula:

$S = \int\limits^4_3 {2\pi x\sqrt{1+}(2x)^{2} } \, dx$

We let the substitution take place.

Therefore, we let $u = 1 + 4x^{2}$

Thus, $du = 8dx.$

So,

$xdx = \frac{1}{8}du$

Also, the interval of the integration changes to [ 37, 65]

Thus,

$S = \int\limits^4_3 {2\pi \sqrt{1+4x^{2} } } \, dx \\= \int\limits^65_35 {2\pi \sqrt{\frac{1}{8}u } } \, dx$

= $\frac{1}{6} [ 65^{\frac{3}{2}-37^{\frac{3}{2} } }$

= 156.5 units²

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3 years ago

Enter the value of P so that the expression 4(10+n) is equivalent to 4(n+p)

Paraphin [41]

Answer:

I think it is 10

Step-by-step explanation:

Only because I believe n is still unknown and 4 must be multiplied

example

4(10 + n)

40 + 4n

now if P = 10

4(n + p)

4(n + 10)

4n + 40

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3 years ago

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4. Find the solution of y = 2x + 5 for x = 1. A (1, 7) B (3, 1) C (1, 12) D (1, -2)

Sati [7]

Answer:

Step-by-step explanation:

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3 years ago

Fleas reproduce at a rate of 29% per day. If there are 300 fleas now, how long until there are 1000?

fomenos

Answer:

11.49yrs

Step-by-step explanation:

300*29% = 87

87/ 1000 = 11.49 (symplified)

my answer may not be accurate but HEY! at least im trying.

:( but i do hope this helps really.

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3 years ago