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3 years ago

3. solve (-7) + b = (-11)

Mathematics

1 answer:

sveta [45]3 years ago

3 0

B= -4 hope this helps!!!

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Katie wants to buy some popcorn for her family at the theater. Each small tub of popcorn costs $3 and each large tub of popcorn

umka2103 [35]

Answer:

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Step-by-step explanation:

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4 years ago

What is the missing constant term in the perfect square that starts with x^2-12x

Ipatiy [6.2K]

Essentially, we are trying to find the missing constant term of $(x - a)^2$ (remember that we are subtracting $a$ due to the negative sign in front of the second term). Let's expand this to see what we can work with:

$(x - a)^2$

Set up

$x^2 - ax - ax + a^2 = x^2 - 2ax + a^2$

FOIL and simplify

Now, we know the second term is $12x$ , so let's set the second term in the polynomial we just found equal to $12x$ :

$2ax = 12x$

Set up

$2a = 12$

Divide both sides of the equation by $x$

$a = 6$

Divide both sides of the equation by 2

We have found $a = 6$ . We know the missing constant term is $a^2$ , according to the polynomial we found earlier. Thus, the missing term is:

$a^2 \Rightarrow 6^2 = 36$

The missing constant term is 36.

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3 years ago

If the radius of a spherical rubber ball is 1 1/4 inches what is its volume to the nearest cubic inch

Yuri [45]

? = 4/3 π(1 1/4)
<span>Answer: 8</span>

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3 years ago

Quiz Math :)

Ierofanga [76]

First answer 14^5. Second answer 42^5

4 0

2 years ago

Read 2 more answers

Calculate the expected value, the variance, and the standard deviation of the given random variable X. (Round all answers to two

kari74 [83]

Answer:

The answer is "4.8, 3.84, and 1.96".

Step-by-step explanation:

Given:

$\to p = 0.2\\\\\to q = 1 - p = 1 - 0.2 = 0.8\\\\\to n = 24\\\\$

By using the binomial distribution:

$\to Mean(\mu) = n \times p = 24 \times 0.2 = 4.8\\\\\to variance (\sigma^2) = n \times p \times q = 24 \times 0.2 \times 0.8 = 3.84\\\\\to Standard \ deviation (\sigma) = \sqrt{n \times p \times q} = \sqrt{24 \times 0.2 \times 0.8} = 1.96$

7 0

3 years ago