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2 years ago

PLZ NO FILES I really need help

Mathematics

2 answers:

Lelechka [254]2 years ago

8 0

53 is the answer

Explanation

Yes

Vera_Pavlovna [14]2 years ago

3 0

Answer:

x=25

Step-by-step explanation:

4x+50=150

»4x=159-50

»100÷4

»x=25

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Steve drives at a constant speed of 59.3 mph. How far should he expect to drive in 7/8 hr?

Olenka [21]

Answer:

51.9 miles

Step-by-step explanation:

distance = speed * time

d = 59.3 * 7/8

d = 51.8875 miles

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51.9 miles

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2 years ago

Evaluate 5|x^3 - 2| + 7 when x = -2

Dafna1 [17]

Answer:

Step-by-step explanation:

5 |-2^3 - 2| + 7

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absolute value of -10 = 10

5 * 10 = 50

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2 years ago

Read 2 more answers

Identify the ellipses, represented by equations, whose eccentricities are less than 0.5

ozzi

Answer:

See explanation

Step-by-step explanation:

Hello, we cannot see the ellipse equations.

The eccentric of an ellipse is given by:

$e = \frac{c}{a}$

Assuming the equations are:

$\frac{ {x}^{2} }{25} + \frac{ {y}^{2} }{16} = 1$

Then a²=25 and b²=16

${c}^{2} = {a}^{2} - {b}^{2}$

${c}^{2} = 25 - 16$

${c}^{2} = {3}^{2}$

$c = 3$

The eccentricity is:

$e = \frac{3}{5} = 0.6$

If the ellipse has equation,

$\frac{ {x}^{2} }{ {5}^{2} } + \frac{ {y}^{2} }{ {3}^{2} } = 1$

then the this time, we have a=5 and b=3.

This means that:

${c}^{2} = {a}^{2} - {b}^{2}$

${c}^{2} = {5}^{2} - {3}^{2}$

${c}^{2} = {4}^{2}$

$c = 4$

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3 years ago

Read 2 more answers

What is the value of -36 - (-40) 0-76 076 O 4 0-4

maksim [4K]

Answer:

Step-by-step explanation:

→ –36 – ( –40 )

Whenever there is sign of subtraction before the brackets, signs of the numbers inside the brackets get changed when we removed the brackets.

( – ) × ( – ) = ( + )

→ –36 + 40

→ 4

$\therefore$ 4 is the required answer.

4 0

2 years ago

An amusement park offers an entrance fee discount of 20% to children under 6 years of age and seniors 65 or older. What is the r

Temka [501]

Answer:

[0, 6) ∪ [65, ∞)

Step-by-step explanation:

Ages under 6 will be in the interval [0, 5], or in the interval [0, 6), as you may wish.

Ages 65 or older will be in the interval [65, ∞).

The union of these two intervals is ...

[0, 6) ∪ [65, ∞)

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3 years ago