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Inessa05 [86]
2 years ago
6

6) Evaluate 4x if x = -1/4

Mathematics
2 answers:
VLD [36.1K]2 years ago
5 0

Answer: -1

Step-by-step explanation:

Evaluate 4x if x = -1/4

4(-1/4) = -1

Ira Lisetskai [31]2 years ago
3 0

Answer: -1

Step-by-step explanation:

4x and x = -1/4

plug x into the expression

4(-\frac{1}{4} )

simplifies to:

-\frac{4}{4}

4 divided by 4 is just 1, but it is negative so your final answer is

-1

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The corners of a square are cut off two centimeters from each corner to form an octagon. If the octagon is 10 centimeters wide,
zvonat [6]

Answer:

  • <u>92 cm²</u>

Explanation:

The area of the <em>octagon</em> may be calculated as the difference of the area of the original square and the area of the four corners cut off.

1) <u>Area of the square</u>.

The original square's side length is the same wide of the formed octagon: 10 cm.

So, the area of such square is: (10 cm)² = 100 cm².

2) <u>Area of the four corners cut off</u>.

Since, the corners were cut off two centimeters from each corner, the form of each piece is an isosceles right triangle with legs of 2 cm.

The area of each right triangle is half the product of the legs (because one leg is the base and the other leg is the height of the triangle).

Then, area of one right triangle: (1/2) × 2cm × 2cm = 2 cm².

Since, they are four pieces, the total cut off area is: 4 × 2 cm² = 8 cm².

3) <u>Area of the octagon</u>:

  • Area of the square - area of the cut off triangles = 100 cm² - 8cm² = 92 cm².

And that is the answer: 92 cm².

4 0
3 years ago
Here is a five-sided polygon. Describe or show the strategy you would use to find its area. Mark up and label the diagram to sho
Julli [10]

Answer:

Step-by-step explanation:

1. Here are two five-pointed stars. A student said, “Both figures A and B are polygons. They are both composed of line segments and are two-dimensional. Neither have curves.” Do you agree with the statement? Explain your reasoning.

Two five-pointed stars, labeled A and B. Star A is composed of a pentagon surrounded by five small triangles. Star B is a single shape with one continuous perimeter.

2. Here is a five-sided polygon. Describe or show the strategy you would use to find its area. Mark up and label the diagram to show your reasoning so that it can be followed by others. (It is not necessary to actually calculate the area.)

A grid.

5 0
3 years ago
3/4 times t for t equals 12
Free_Kalibri [48]
\frac{3}{4} t 
First lets substitute the value of the variable; (t=12)

\frac{3}{4} (12)
Now lets solve the equation;

\frac{3}{4} (12) =  \frac{3}{4} *  \frac{12}{1}
Next cross simplify;


\frac{3}{1} *  \frac{3}{1} (multiply) 3 * 3 = 9
So 9 is the final answer! Hope this helps!

3 0
3 years ago
Elizabeth bought a necklace that has a mass of 35 grams which measure is equivlent to 35 grams
alexandr402 [8]
350 milligrams Is the answer
3 0
4 years ago
Speed limit signs are placed every 58 mi on the highway. How many signs are there on a 75 mi stretch of highway?
vodomira [7]

Answer:

Only one because if it's every 58 miles the next one would be at 116 miles which is higher than 75

4 0
3 years ago
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