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3 years ago

If 4 video games cost $78, how much do 8 video games cost?

Mathematics

2 answers:

lesya [120]3 years ago

7 0

Answer:

132.8

Step-by-step explanation:

first divide 78 by 4 wich is 16.6 then multiply 16.6by 8 and you get 132.8

JulijaS [17]3 years ago

3 0

Answer:

156 dollars is how much 8 video games cost

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Suppose that the function h is defined, for all real numbers, as follows.

raketka [301]

The function h is defined, for all real numbers , answer is as follows -

h(1) = - 2

h(2) = 3

h(4) = 3.

function, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable

We have been given that

h(x) = 1/4(x) - 1 if x < -2

h(x) = -(x + 1)² + 2 if -2 ≤ x < 2

h(x) = 3 if x ≥ 2

Find h (1), h (2), and h (4)

For h (1) -

Value of h(1) for h(x) = -(x + 1)² + 2 as if -2 ≤ x < 2

So put x = 1

h(x) = -(x + 1)² + 2

h(1) = -(1 + 1)² + 2

h(1) = -4 + 2

h(1) = - 2

For h (2) -

Value of h(2) for h(x) = 3 as if x ≥ 2

h(x) = 3

h(2) = 3

For h (4) -

Value of h(4) for h(x) = 3 as if x ≥ 2

h(x) = 3

h(4) = 3

Hence , the value for given functions - h(1) = - 2 , h(2) = 3 and h(4) = 3.

To learn more about Function

brainly.com/question/25638609

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5 0

1 year ago

An alloy weighing 30 lbs. is 11% tin. The alloy was made by mixing a 15% tin alloy and a 9% tin alloy. How many pounds of each a

pochemuha

We let x = pounds of alloy that is 15% tin
The problem is modeled by the equation:
0.11(30) = 0.15x + 0.09(30-x)
The equation means that the amount of tin does not change. Also, the amount of alloy (total weight - weight of 15% alloy) is (30-x).

Solving for x:
3.3 = 0.15x +2.7 - 0.09x
.06x = 0.6
x = 10 lbs

30-10 = 20 lbs

<span>10 lbs. of the 15% alloy and 20 lbs. of the 9% alloy</span>

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3 years ago

Gina works at a diner. She earns $6 each hour plus tips.In one week,she worked 37 hours a week and earned $43 in tips.How much d

oksian1 [2.3K]

The answer is $265 (how much did she make altogether)

The equation is x=6h+6

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4 years ago

An urn contains n balls, one of which one is special. If k of these balls are withdrawn one at a time, with each selection being

Aleksandr [31]

Using it's concept, it is found that the probability that the special ball is chosen is given by:

$p = \frac{1}{C_{n,k}}$

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

The total number of outcomes is given by the combination of k balls from the set of n balls, given by:

$C_{n,k} = \frac{n!}{k!(n - k)!}$

One ball is special, hence the probability the special ball is chosen is given by:

$p = \frac{1}{C_{n,k}}$

More can be learned about probabilities at brainly.com/question/14398287

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3 years ago

While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between

mr_godi [17]

Answer: The expected value of the water depth is 4.5 m.

Step-by-step explanation:

Let x be a random variable which is uniformly distributed in interval [a,b] .

Then the mean of the distribution is ghiven by :-

$E(x)=\dfrac{a+b}{2}$

Given : While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.00 m and 7.00 m.

Then, the expected value of the water depth = $\dfrac{2+7}{2}=\dfrac{9}{2}=4.5$

Hence, the expected value of the water depth is 4.5 m.

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3 years ago