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3 years ago

El has $10.25 to spend at

Mathematics

1 answer:

Nonamiya [84]3 years ago

5 0

No . but she can buy 2 of the books but not all 3

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If a angle on the circumference of a circle is subtended by a diameter of the circle what is the angle

Brilliant_brown [7]

Answer:

The angle is 90 degrees

Step-by-step explanation:

Required

Angle subtended by the diameter

The theorem to solve this is:

The angle subtended by an arc is twice the angle it subtends.

The diameter forms $180^\circ$ on the circle, so we have:

$2*\theta = 180^\circ$

Where $\theta$ is the angle subtended

Solve for $\thets$ $\theta$

$\theta = \frac{180^\circ}{2}$

$\theta = 90^\circ$

4 0

3 years ago

3x-5+2x=15+4x-5 how do I solve this step by step

bezimeni [28]

3x - 5 + 2x = 15+ 4x - 5
5x - 5 = 10 + 4x
5x - 5 + 5 = 10 +5 +4x
5x = 4X + 15
5x - 4x = 4x - 4x + 15
x = 15

6 0

3 years ago

21. A linear function g(x) passes through the points (3, -1) and (-6, -4). What is the y-intercept of the function? Write the so

choli [55]

Answer:

the y-intercept is -2 or (0, -2)

6 0

3 years ago

Reduce24/3 to lowest terms

denpristay [2]

" / " this means divide, so if your dividing it is 8 because 8 times 3 is 24

5 0

3 years ago

A water tank in the shape of an inverted circular cone has a base radius of 3 m and height of 7 m . If water is being pumped int

Wittaler [7]

The water level increases by 0.608 meters per minute when the water is 3.5 m deep

<h3>How to determine the rate?</h3>

The given parameters are:

Radius, r = 3
Height, h = 7
Rate in, V' = 4.3m^3/min

The relationship between the radius and height is:

r/h = 3/7

Make r the subject

r = 3h/7

The volume of a cone is;

$V = \frac 13\pi r^2h$

This gives

$V = \frac 13\pi (\frac{3h}{7})^2h$

Expand

$V = \frac{3h^3}{49}\pi$

Differentiate

$V' = \frac{9h^2}{49}\pi h'$

Make h' the subject

$h' = \frac{49}{9\pi h^2}V'$

When the water level is 3.5.

We have:

$h' = \frac{49}{9\pi * 3.5^2}V'$

Also, we have:

V' = 4.3

So, the equation becomes

$h' = \frac{49}{9\pi * 3.5^2} * 4.3$

Evaluate the products

$h' = \frac{210.7}{346.36}$

Evaluate the quotient

h' = 0.608

Hence, the water level increases by 0.608 meters per minute