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Ilia_Sergeevich [38]
3 years ago
14

Determine the variables tested in each of the following experiments. If applicable, determine and identify any positive or negat

ive controls. A study is being done to test the effects of habitat space on the size of fish populations. Different sized aquariums are set up with six goldfish in each one. Over a period of six months, the fish are fed the same type and amount of food. The aquariums are equally maintained and cleaned throughout the experiment. The temperature of the water is kept constant. At the end of the experiment, the number of surviving fish are surveyed. A. Independent Variable: B. Dependent Variable: C. Controls:
Mathematics
1 answer:
adoni [48]3 years ago
7 0

Answer:

Independent Variable- size of aquariums

Dependent variable - number of surviving fish

Controls: nil

Step-by-step explanation:

In every experiment, the independent variable is manipulated and its effect on the dependent variable is observed as certain factors are kept constant.

In this study, the independent variable is the size of the aquariums. As this factor is manipulated, the number of surviving fish (dependent variable) changed accordingly. There was no mention of a control group in the experiment.

However, temperature, amount of food and type of food were held constant for all the experimental groups.

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kakasveta [241]

Answer:

The triangles are not similar

Step-by-step explanation:

we know that

If two triangles are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

<em>Triangle X.Y.Z</em>

\angle X=61^o

\angle Z=90^o

\angle Y=90^o-61^o=29^o ---> angle X and angle Y are complementary angles

<em>Triangle H.G.J</em>

\angle H=90^o-34^o=56^o ---> angle H and angle J are complementary angles

\angle G=90^o

\angle J=34^o

so

X.Y.Z is a61^o-90^o-39^o triangle

H.G.J is a56^o-90^o-34^o triangle

The measure of its corresponding angles are not congruent

therefore

The triangles are not similar

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3 years ago
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Step-by-step explanation:

4 0
2 years ago
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Astrid is looking for a job at a call center. Call center A offers her 15 dollars per hour and call center B offers her 25 cents
KIM [24]

Call center A and B offers equal wages.

<h3>what is Equation?</h3>

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side. It demonstrates the equality of the relationship between the expressions printed on the left and right sides LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

The formula for wages = P/t

First, P= 15 dollars

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time= 1 hour= 60 minutes

then, the unit rate is

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Second, P= 25 cents

       

time= 1 minutes

then, the unit rate is

=25/1

= 25 cents/ min

Hence, Call center A and B offers equal wages.

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brainly.com/question/10413253

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1 year ago
A circle has an area of 78.5 square inches what is the radius of the circle
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Answer:

Step-by-step explanation:

Area of circle = 78.5 in²

πr² = 78.5

3.14*r² = 78.5

r^{2}=\frac{78.5}{3.14}\\\\=\frac{78.5*100}{3.14*100}\\\\=\frac{7850}{314}\\\\r^{2}=25\\r=\sqrt{25}=\sqrt{5*5}\\\\

r =  5 in

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3 years ago
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