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yarga [219]
1 year ago
5

El número de metros de cable necesarios para un elevador depende del número de pisos en el servicio del edificio. Supon que m=7p

+ 12, donde m es el número de metros de cable del elevador y p es el número de pisos de construcción.
¿ Qué cantidad de cable necesitará un elevador para un edificio de nueve pisos?
¿De cuántos pisos es un edificio que utilizo 124 m de cable en su elevador?
Mathematics
1 answer:
maksim [4K]1 year ago
5 0
Primera pregunta: se necesitan 75 metros para 9 pisos
Segunda pregunta: 124 metros es suficiente para 16 pisos
Espero que esto ayude!
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Jenna mixed two shades of purple paint. For Purple People Eater, she used 3 pints of red paint for every 5 pints of blue paint.
emmasim [6.3K]

Answer:

\frac{12}{35}

Step-by-step explanation:

Given :

→ For Purple People Eater, she used 3 pints of red paint for every 5 pints of blue paint.

i.e, The ratio of red paint to blue paint is 3:5

→ For Purple Majesty, she used a blue to red paint ratio of 7 to 4.

i.e, The ratio of red paint to blue paint is 4:7

To find :

1) Compare the ratios of red paint to blue paint.

\frac{3}{5}\times \frac{4}{7}=\frac{12}{35}

2) The ratio for Purple People Eater can be expressed in fraction form as :

=\frac{3}{5}

3) The ratio for Purple Majesty can be expressed in fraction form as :

=\frac{7}{4}

4) To compare these fractions, rewrite them with a common denominator

For common denominator

Multiply numerator and denominator by 4 in \frac{3}{5}

\Rightarrow\frac{3\times 4}{5\times4}=\frac{12}{20}

Multiply numerator and denominator by 5 in \frac{7}{4}

\Rightarrow\frac{7\times 5}{5\times4}=\frac{35}{20}

Common denominator is 20


6 0
1 year ago
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Which graph represents the function f(x) = -|x+3|?
Fofino [41]
The last one is correct
5 0
2 years ago
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Is ABC~DEF? If /so, identify the similarity postulate or the theorem that applies, A. similar- AA B. similar-SSS C. similar- SAS
Mariana [72]

Answer: Similar - AA

Just took the quiz, Its Similar AA not sure why just trust me homie

3 0
2 years ago
In 2010, Rafik bought a house. In 2015, Rafik sold the house to Bianca. He made a 20% profit on the sale. In 2019, Bianca sold t
sweet [91]

Answer:

£170000

Step-by-step explanation:

In 2010, Rafik bought a house. Let us assume Rafik bought the house for $x.  In 2015, Rafik sold the house to Bianca and made 20% profit. 20% profit = 20% of x = 0.2 × x = 0.2x. Therefore Rafik sold the house to Bianca at x + 0.2x = 1.2x. Bianca bought the house at 1.2x

The house was sold by Bianca at 5% loss in 2019. 5% loss = 0.05(1.2x) = 0.06x

Therefore the house was sold by Bianca at 1.2x - 0.06x = 1.14x. Since Bianca sold the house at £193800.

⇒ 1.14x = 193800

x = 193800/1.14

x = £170000

Rafik paid £170000 for the house in 2010

7 0
2 years ago
A researcher is using a repeated-measures study to evaluate the difference between two treatments. If the difference between the
Leya [2.2K]

Answer:

A) a small variance for the difference scores and a small standard error

Step-by-step explanation:

Since the difference scores are obtained by subtracting one variable form another, if the difference scores are consistent between treatments, then the variance will be small. The higher the variance, the higher the standard error. So if the variance is small, then the standard error will also be small.

8 0
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