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3 years ago

Seven lesson a number divided by three is five

Mathematics

2 answers:

puteri [66]3 years ago

7 0

Answer:(7 - x)/3 = 5

Softa [21]3 years ago

6 0

The Answer would be:(7-x)/3=5

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Which is the equation of an ellipse centered at the origin with foci on x-axis, x-intercepts +7, -7 and y-intercepts +2,

Aleks04 [339]

We know that
foci on x-axis-------> is a ellipse with horizontal major axis

the equation is
(x²/a²)+(y²/b²)=1

major axis is the x-axis with length 2a
2a=14--------> a=7

minor axis is the y-axis with length 2b
2b=4-----> b=2

the equation is
(x²/a²)+(y²/b²)=1------> (x²/7²)+(y²/2²)=1-----> (x²/49)+(y²/4)=1

the answer is
(x²/49)+(y²/4)=1

see the attached figure

7 0

3 years ago

A triangle has sides with lengths of 50 meters, 57 meters, and 79 meters. Is it a right

dimaraw [331]

A right triangle has at least one angle that is a right angle (90 degrees)

50,57,79 none are 90 degrees

The triangle is not a right triangle

8 0

3 years ago

Read 2 more answers

a 20 year old building has been depreciated to $420,000 in value it has been depreciated at 2.5% per year what was its original

Nostrana [21]

It would be 210,000 cause 2.5x20 = 50% so 420,000 x 50%

6 0

4 years ago

Read 2 more answers

Find the following (u•w)(2)= (w•u)(2)=

Viefleur [7K]

Answer:

$(u \circ w)(2) = -34$

$(w \circ u) = -49$

Step-by-step explanation:

We are given these following functions:

$u(x) = 4x + 2$

$w(x) = -5x + 1$

The first step to solve this question is finding the composite functions. So

$(u \circ w)(x) = u(w(x)) = u(-5x+1) = 4(-5x + 1) + 2 = -20x + 6$

$(w \circ u)(x) = w(u(x)) = w(4x + 2) = -5(4x+2) + 1 = -20x - 9$

At x = 2

Now we replace x by 2 in each of the functions. So

$(u \circ w)(2) = -20(2) + 6 = -40 + 6 = -34$

$(w \circ u)(2) = -20(2) - 9 = -40 - 9 = -49$

5 0

3 years ago

I select two cards from a deck of 52 cards and observe the color of each (26 cards in the deck are red and 26 are black). Which

horsena [70]

Answer:

b. S={(red, red), (red, black), (black, red), (black, black)} where, for example, (red, red) stands for the event "the first card is red and the second card is red."

Step-by-step explanation:

The sample space S for the possible outcomes reflects all possible cmobinations linked to the event of selecting the two cars.
In any case, you have to take into account all possible scenarios from te event of selecting two cars. Because there are two possible alternatives of color for the cars, when picking two cars, you can face the situations: S={(red, red), (red, black), (black, red), (black, black)}.

5 0

3 years ago