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3 years ago

How do you evaluate the expression to this problem 24 divided by (-4)+(-2) times (-5)

Mathematics

2 answers:

Tju [1.3M]3 years ago

8 0

24/-30 would be the answer

balu736 [363]3 years ago

7 0

I think it's 24/- 36

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3 years ago

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A radio tower casts a shadow 8 feet long at the same time that a vertical yardstick casts a shadow half an inch long.How tall is

Lapatulllka [165]

The height of radio tower is 576 feet approximately

Solution:

Given that, radio tower casts a shadow 8 feet long

At the same time that a vertical yardstick casts a shadow half an inch long

To find: height of radio tower

Let "x" be the height of radio tower

length of shadow of tower = 8 feet

Length of shadow of stick = $\frac{1}{2} \text{ inch}$

Convert inch to feet

$1 \text{ inch } = \frac{1}{12} \text{ foot }$

$\frac{1}{2} \text{ inch } = \frac{1}{2} \times \frac{1}{12} \text{ foot } = 0.0416 \text{ foot }$

Thus,

Length of shadow of stick = 0.0416 feet

Length of vertical yard stick = 3 feet (since 1 yard = 3 feet )

Therefore, by proportion we get,

$\frac{\text{ height of radio tower }}{ \text{ length of shadow of tower }}=\frac{\text{ Length of vertical yard stick}}{\text{ Length of shadow of stick }}$

Substituting the values we get,

$\frac{x}{8} = \frac{3}{0.0416}\\\\x = 8 \times 72.11\\\\x = 576$

Thus height of radio tower is 576 feet approximately

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3 years ago

PLEASE HELP Write the equation of the circle graphed below.

klasskru [66]

Answer:

Step-by-step explanation:

The standard form of a circle is

$(x-h)^2+(y-k)^2=r^2$ where h and k are the coordinates of the center and r is the radius. The grids on our graph are 1/4 of a unit apart, and that will be important when we need to find the radius of the circle in just a minute. But first the center.

The center is situated at (-2, -2). That is our h and k.

The radius goes from -1.25 to -2, so the radius is .75 units long (or 3/4 of a unit).

Putting all of this together:

$(x-(-2))^2+(y-(-2))^2=(.75)^2$ which simplifies to

$(x+2)^2+(y+2)^2=\frac{9}{16}$

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3 years ago

How many terms are there in the following expression: 3a + 3ab + 7b – 4d?

kherson [118]

A term is a single constant or variables that have non-zero coefficients.

Since there are 4 terms with non-zero coefficients in the following expression, there are 4 terms.

Hope this helps.

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4 years ago

How to convert improper fraction to proper fraction

Sindrei [870]

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