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3 years ago

5

How can you use an equation to find an unknown value in a proportional relationship?

1 answer:

Gwar [14]3 years ago

8 0

Well if you already know how to write an equation for a given set of proportions, then all you have to do is replace the unknown value with x, and then cross multiply and solve the equation. One important thing to remember is that for each proportion the numerator and the denominator have to be of the same units in the equation.

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A monomial of the 2 degree with a leading coefficient of 3

Ilia_Sergeevich [38]

Answer:

In the procedure

Step-by-step explanation:

we know that

A polynomial which has only one term is called monomial

The degree of a monomial is defined as the sum of all the exponents of the variables

<em>Examples</em>

If the monomial has only one variable

3x² -----> is a monomial of the 2 degree with a leading coefficient of 3

If the monomial has more than one variable

3xy ----> is a monomial of the 2 degree with a leading coefficient of 3

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3 years ago

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A highway engineer specifies that a certain section of roadway covering a horizontal distance of 2km should have a downgrade of

Zigmanuir [339]

Answer:

$0.16km$

Step-by-step explanation:

A highway engineer wants to compute the change in elevation of a section of road. The horizontal distance of this section of road is 2km and downgrade is 8%

The slope formula is given by

$m=\frac{rise}{run}=\frac{x}{y}$

m = 8% = 8/100

run = y = 2km

$m =\frac{x}{y}$

$\frac{8}{100} =\frac{x}{2}$

$\frac{2*8}{100} =x$

$x=\frac{16}{100} =0.16km$

Verification:

$m=\frac{0.16}{2}= 0.08=8%$ %

3 0

3 years ago

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Which statement decribes the ratio 13:8?

Mamont248 [21]

Answer:

D

Step-by-step explanation:

that what I think but not sure

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3 years ago

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Following are heights, in inches, for a sample of college basketball players. 78 83 82 78 78 80 81 79 79 83 77 78 84 82 80 80 82

blagie [28]

The mean height of the basketball players is 80.3 inches

For given question,

we have been given the list of heights, in inches, for a sample of college basketball players.

We need to find the mean height of the basketball players.

We know that, for given sample of data

mean = sum of all observations ÷ total number of observation

First we find the sum of given heights.

78 + 83 + 82 + 78 + 78 + 80+ 81 +79+ 79 +83+ 77 +78+ 84+ 82+ 80+ 80 +82+ 84+78+ 80 = 1606

Total number of observations = 20

Using the formula of mean,

⇒ mean height = 1606/20

⇒ mean height = 80.3 inches

Therefore, the mean height of the basketball players is 80.3 inches

Learn more about the mean here:

brainly.com/question/6813742

#SPJ4

3 0

1 year ago

What is the math sentence for 3.46 and 0.346

Gnesinka [82]

Answer:

3.46 in a fraction

340.60

Step-by-step explanation:

The decimal 0.346 equals 34.6%

To convert from decimal to percent, just multiply the decimal value by 100. In this example we have: 0.346 × 100 = 34.6% (answer).

➥ The ease way:

1) Move the decimal point two places to the right: 0.346 → 3.46 → 34.6.

2) Add a % sign: 34.6%

Answer: 34.6%

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3 years ago

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