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3 years ago

Karina is showing her steps to solve the expression −26.7 ÷ 1 over 3.

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

7 0

Answer:

-26.7/1 = -26.7

-26.7/3 does not equal -26.7 x -3

By: sbcardinals

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Raymond just got done jumping at Super Bounce Trampoline Center. The total cost of his session was \$43.25$43.25dollar sign, 43,

Travka [436]

Answer:

29 minutes

Step-by-step explanation:

Raymond's total charge is the sum of the entrance fee and the per-minute charge for the number of minutes he used the trampoline:

total charge = entrance fee + (per minute charge) × t

43.25 = 7.00 + 1.25t . . . . . filling in the given numbers

36.25 = 1.25t . . . . . . . . . . . subtract 7

t = 36.25/1.25 = 29 . . . . . . divide by the coefficient of t

Raymond was on the trampoline for 29 minutes.

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4 years ago

A middle-school art teacher, Ms. Velez, and her students are turning the school’s gymnasium into a student art museum for the da

boyakko [2]

Answer:19 to the 5th power

Step-by-step explanation:

U got to count all the zeros and that will be the number u put on top plus 19

3 0

3 years ago

The random variable x represents the number of computers that families have along with the corresponding probabilities. Find the

Elena L [17]

Answer:

The correct option is (d).

Step-by-step explanation:

The complete question is:

The random variable x represents the number of computers that families have along with the corresponding probabilities. Use the probability distribution table below to find the mean and standard deviation for the random variable x.

x : 0 1 2 3 4

p (x) : 0.49 0.05 0.32 0.07 0.07

(a) The mean is 1.39 The standard deviation is 0.80

(b) The mean is 1.39 The standard deviation is 0.64

(c)The mean is 1.18 The standard deviation is 0.64

(d) The mean is 1.18 The standard deviation is 1.30

Solution:

The formula to compute the mean is:

$\text{Mean}=\sum x\cdot p(x)$

Compute the mean as follows:

$\text{Mean}=\sum x\cdot p(x)$

$=(0\times 0.49)+(1\times 0.05)+(2\times 0.32)+(3\times 0.07)+(4\times 0.07)\\\\=0+0.05+0.64+0.21+0.28\\\\=1.18$

The mean of the random variable x is 1.18.

The formula to compute variance is:

$\text{Variance}=E(X^{2})-[E(X)]^{2}$

Compute the value of E (X²) as follows:

$E(X^{2})=\sum x^{2}\cdot p(x)$

$=(0^{2}\times 0.49)+(1^{2}\times 0.05)+(2^{2}\times 0.32)+(3^{2}\times 0.07)+(4^{2}\times 0.07)\\\\=0+0.05+1.28+0.63+1.12\\\\=3.08$

Compute the variance as follows:

$\text{Variance}=E(X^{2})-[E(X)]^{2}$

$=3.08-(1.18)^{2}\\\\=1.6876$

Then the standard deviation is:

$\text{Standard deviation}=\sqrt{\text{Variance}}$

$=\sqrt{1.6876}\\\\=1.2990766\\\\\approx 1.30$

Thus, the mean and standard deviation for the random variable x are 1.18 and 1.30 respectively.

The correct option is (d).

3 0

3 years ago

Can someone help me with this?

Nesterboy [21]

Answer:

36000pi

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3

We know the surface area

SA = 4 pi r^2

3600 pi = 4 pi r^2

Divide each side by 4pi

3600 pi / 4pi= 4 pi r^2/4pi

900= r^2

Take the square root of each side

30 = r

Now substitute into the equation for volume

V = 4/3 pi r^3

= 4/3(pi) (30)^3

=36000pi

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3 years ago

-Draw any polygon and label the following parts in the space provided.

elena-s [515]

Step-by-step explanation:

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3 years ago