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4vir4ik [10]
2 years ago
10

Translate the expression: four times the difference of 7 and a number.

Mathematics
1 answer:
ivolga24 [154]2 years ago
6 0

Answer:

4 x (7-x)

Step-by-step explanation:

4 times (multiply) the difference (subtraction) of 7 and a number (seeing as how you don't know that number use a variable, x)

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Plzzz helppp i need to pass this classs
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D. X=130 but im not sure if this is correct
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3 years ago
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Consider the line x+5y=6
Tems11 [23]

Answer:

x + 5y = 6 is perpendicular to y = 5x + \frac{6}{5} and parallel to y = -\frac{1}{5}x + 2\\

Step-by-step explanation:

First, convert the equation to standard form so that y is isolated.

x + 5y = 6 --> x - 6 = -5y (divide both sides by -5) --> y = -\frac{1}{5}x + \frac{6}{5}

A perpendicular line will have a slope that is the opposite reciprocal of the original slope (meaning you flip the numerator and denominator then make it negative).

-\frac{1}{5} is perpendicular to -(\frac{-5}{1} ) which simplifies to 5.

A parallel line will have the same slope, but the y-intercept will be different. It can be pretty much any number as long as the original slope is used in the new equation.

y = -\frac{1}{5}x + \frac{6}{5}\\ is parallel to y = -\frac{1}{5}x + 2\\ just like y = -\frac{1}{5}x - \frac{100}{23}.

6 0
3 years ago
Ashley is making cookies for
allochka39001 [22]

Answer:

1.6 cups of sugar

Step-by-step explanation:

0.4 cups per batch.

4 batches.

Total sugar required = 0.4 x 4

= 1.6 cups of sugar

8 0
3 years ago
In an Italian class, 65 percent of the students were women. At the end of the class, 52 percent of the men and 44 percent of the
Nata [24]

47% of those who received a certificate were men

It is given that in an Italian class, 65 percent of the students were women. At the end of the class, 52 percent of the men and 44 percent of the women received a certificate.

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty.

To know more about probability visit: brainly.com/question/13604758

#SPJ4

3 0
2 years ago
The area of a smaller circle is one twenty-fifth of the area of a larger circle. What is the ratio of the radius of the larger c
dangina [55]

Answer:

f) \:  r2 \div r1 \: = 5 \div 1

Step-by-step explanation:

\frac{a1}{a2}  =  \frac{1}{25}  =  \frac{\pi \times (r1)^{2} }{\pi \times (r2)^{2}}

{(\frac{r2}{r1})}^{2}  = 25

\frac{r2}{r1}  = 5

8 0
3 years ago
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