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4 years ago

What is the product?

1 answer:

6 0

The answer is 15r to the 2nd power -14r - 8, so the answer is D).

15r to the 2nd power - 20r + 6r - 8 ( I Used the FOIL method)

15r to the 2nd power + (-20r + 6r) - 8 (Gather like terms)

15r to the 2nd power - 14r - 8 (Simplify)

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I will give multiple brainlist to people who help me with these slides!

lesantik [10]

Answer:

A)6

B)ST

Step-by-step explanation:

A if u turn it, 15 is equal to the 10

15/9=10/x

x=90/15

x=6

B) Turn it so #2 is facing up.

ST is the same.

Hope this helps plz hit the crown :D

4 0

3 years ago

Read 2 more answers

Use the graph of the function y = 4* to answer the

Radda [10]

Answer:

Its the domain of real numbers Written diferently ( R ) or in interval notation ( ( ( −∞, +∞ )

Step-by-step explanation:

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3 years ago

Tammy bought 20 pounds of flour for $11. How many pounds of flour did she get per dollar?

frozen [14]

Answer:

1.82 pounds per dollar

Step-by-step explanation:

20/11= 1.82

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3 years ago

Read 2 more answers

A commuter must pass through 5 traffic lights on her way to work and will have to stop at each one that is red. She estimates th

sergij07 [2.7K]

Answer:

(a) The mean or expected value of X is 2.2.

(b) The standard deviation of X is 1.3.

Step-by-step explanation:

Let X = number of times the traffic light is red when a commuter passes through the traffic lights.

The probability distribution of X id provided.

The formula to compute the mean or expected value of X is:

$\mu=E(X)=\sum x.P(X=x)$

The formula to compute the standard deviation of X is:

$\sigma=\sqrt{E(X^{2})-(E(X))^{2}}$

The formula of E (X²) is:

$E(X^{2})=\sum x^{2}.P(X=x)$

(a)

Compute the expected value of X as follows:

$E(X)=\sum x.P(X=x)\\=(0\times0.06)+(1\times0.25)+(2\times0.35)+(3\times0.15)+(4\times0.13)+(5\times0.06)\\=2.22\\\approx2.2$

Thus, the mean or expected value of X is 2.2.

(b)

Compute the value of E (X²) as follows:

$E(X^{2})=\sum x^{2}.P(X=x)\\=(0^{2}\times0.06)+(1^{2}\times0.25)+(2^{2}\times0.35)+(3^{2}\times0.15)+(4^{2}\times0.13)+(5^{2}\times0.06)\\=6.58$

Compute the standard deviation of X as follows:

$\sigma=\sqrt{E(X^{2})-(E(X))^{2}}\\=\sqrt{6.58-(2.22)^{2}}\\=\sqrt{1.6516}\\=1.285\\\approx1.3$

Thus, the standard deviation of X is 1.3.

4 0

4 years ago

Read 2 more answers

When finding x-intercepts, y is equal to zero. So, we can set the whole function equal to_______.

finlep [7]

Answer:

ZERO

Step-by-step explanation:

When finding x-intercepts, y is equal to zero. So, we can set the whole function equal to ZERO.

Then we set each binomial equal to ZERO.

7 0

3 years ago