3 years ago

Help please! Giving brainly!

Mathematics

1 answer:

Georgia [21]3 years ago

5 0

The answer is D, I believe at least.

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Find 2 integers whose sum is -7 and whose product is 12

Ksivusya [100]

The two integers is -3 and -4

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3 years ago

A lamina with constant density rho(x, y) = rho occupies the given region. Find the moments of inertia Ix and Iy and the radii of

jenyasd209 [6]

Answer:

Ix = Iy = $\frac{ρπR^{4} }{16}$

Radius of gyration x = y = $\frac{R}{4}$

Step-by-step explanation:

Given: A lamina with constant density ρ(x, y) = ρ occupies the given region x2 + y2 ≤ a2 in the first quadrant.

Mass of disk = ρπR2

Moment of inertia about its perpendicular axis is $\frac{MR^{2} }{2}$ . Moment of inertia of quarter disk about its perpendicular is $\frac{MR^{2} }{8}$ .

Now using perpendicular axis theorem, Ix = Iy = $\frac{MR^{2} }{16}$ = $\frac{ρπR^{4} }{16}$ .

For Radius of gyration K, equate MK2 = MR2/16, K= R/4.

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4 years ago

Suppose that a poll finds that 31.9% of taxpayers who filed their tax return electronically self-prepared their taxes. If thre

Aneli [31]

Answer: 0.0325

Step-by-step explanation:

Binomial probability distribution formula for x successes in n trials:-

$P(X=x)=^nC_x\ p^x\ (1-p)^{n-x}$ , where n is the number of trials , p is the probability of success.

Given : The probability that taxpayers who filed their tax return are electronically self-prepared their taxes : $p= 0.319$

If three tax returns submitted electronically are randomly selected, then the probability that all three were self-prepared is given by :-

$P(X=3)=^3C_3\ (0.319)^3\ (1-0.319)^{3-3}\\\\=(1) (0.319)^3(1)\\=0.032461759\approx0.0325$

Hence, the probability that all three were self-prepared =0.0325

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3 years ago

Evaluate the expression if y=6 : 30 - 24 ÷ y

leonid [27]

Answer:

The answer is 1

Step-by-step explanation:

30 minus 24 is 6 and 6 divided by 6 is 1

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3 years ago

The amount of time needed to complete a job, t, varies inversely with the number of workers, w. If

DedPeter [7]

Answer:

Step-by-step explanation:

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