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icang [17]
4 years ago
12

The amount a spring stretches varies directly as the weight of the object attracted to it. If an 8 ounce weight stretches a spri

ng 10 centimeters, how much weight will stretch it 15 centimeters
Mathematics
1 answer:
Rom4ik [11]4 years ago
3 0

Answer:

Weight of <u>12 ounces</u> will stretch spring of 15 centimeters.

Step-by-step explanation:

Given:

The amount a spring stretches varies directly as the weight of the object attracted to it.

An 8 ounce weight stretches a spring 10 centimeters.

Now, to get how much weight will stretch it is 15 centimeters.

According to question:

<em>A spring of 10 centimeters stretches a weight of 8 ounce.</em>

<em>Then a spring of 1 centimeter stretches a weight of = \frac{8}{10}=0.8\ ounce.</em>

<em>So, a spring of 15 centimetres stretches a weight of = 0.8\times 15=12\ ounces.</em>

Therefore, weight of 12 ounces will stretch spring of 15 centimeters.

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Luna observed that in the last 12 issues of rise over run weekly 384 of the 960 pages contained an advertisement if there are 80
myrzilka [38]

Answer:32

Step-by-step explanation:just divided both sides by 12 that will be 348:960=32:80

8 0
3 years ago
Using the findings (e.g., themes) from a qualitative study to develop a new quantitative survey is known as what type of integra
Sunny_sXe [5.5K]

Using the findings from a qualitative study to develop a new quantitative survey is known as mixed integration.

Mixed integration is called the data collection and information classification system that includes both qualitative and quantitative processes as access mechanism to said data and information, that is, performing a mixed or dual analysis of the concepts being studied.

Learn more in brainly.com/question/1978633

5 0
2 years ago
9.
Kisachek [45]

Answer:

Notebooks:  $2.75 each; pens:  $1.10 each

Step-by-step explanation:

Let n and p represent the unit cost of notebooks and the unit cost of pens.

Then 3n + 2p = $10.45, and 4n + 6p = $17.60.

Let's use elimination by addition/subtraction to find n and p.

Multiplying the first equation by -3, we get          -9n - 6p = -$31.35

and then combine this with the second:               4n + 6p =   $17.60

                                                                               -----------------------------

                                     Then,                                   -5n = -$13.75

Dividing both sides by 55, we get n = $13.75 / 5, so we now know that n = $2.75.  Each notebook costs $2.75.

Subbing $2.75 for n in the first equation, we get:

3($2.75) + 2p = $10.45, or

$8.25 + 2p = $10.45

Solving for p, we get p = $2.20 / 2 = $1.10.

Each pen costs $1.10.

7 0
4 years ago
Read 2 more answers
How long was each sprinkler used? The water output rate for the Rodriguez family's sprinkler was 15L per hour. The water output
Lelechka [254]

Answer:

Rodriguez family's sprinkler used for 40 hours

Perry family's sprinkler used for 15 hours.

Step-by-step explanation:

Let "x" be the number of hours Rodriguez family's sprinkler used and "y" be the number of hours Perry family's sprinkler used.

Now let's form two equations using the given information.

x + y = 55  ------------(1)

Using the output, we can form another equation.

15x + 20y = 900  -----(2)

Now we have to solve these two equations to find the number of hours each sprinkler used.

We can use substitution method to solve these two equations.

From the equation (1), we can write

x = 55 - y

Now plug in x = 55 - y in the equation (2), we get

15(55 - y) + 20y = 900

Using the distributive property a(b -c) = ab - ac, we get

15(55) - 15y + 20 y = 900

825 - 15y + 20y = 900

Simplifying the above equation, we get

5y = 900 - 825

5y = 75

Dividing both sides by 5, we get

y = 15

Now plug y = 15 in x = 55 - y to find the value of x.

x = 55 - 15

x = 40

So, Rodriguez family's sprinkler used for 40 hours

Perry family's sprinkler used for 15 hours.

3 0
3 years ago
Order the fractions 4/2, 1/2, 9/10 and 3/4 from least to greatest.
Y_Kistochka [10]
1/2, 3/4, 9/10, 4/2

I don't think this was a middle school question but whatevs

3 0
3 years ago
Read 2 more answers
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