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Maru [420]
3 years ago
10

Please help this is urgent. | 2.Here are four expressions that have the value -1/2 : -1/4 + (-1/4), 1/2 - 1, -2 x 1/4, -1 ➗ 2 .

Write five expressions:a sum, a difference, a product, a quotient, and one that involves at least two operations that have the value .
Mathematics
2 answers:
aliya0001 [1]3 years ago
6 0
1-2+10 is the answer
Nesterboy [21]3 years ago
5 0

Answer:

Step-by-step explanation:

1 - 2 + 10 o lw. First find a common denominator. 3 * 5. After cross reducing, multiply across ... Divide the fraction to get a decimal answer. 21 into a an. Jinit. 5 = 1.25 ... 3 = -x +8. -8 = -8. = -5 = -X. =-1(-5) = -x (-1). = 5 = x. Set up a ratio, and cross ... Combine like terms, and solve for x. Divide both sides by 2. = x= 20. = 5-1​">4.

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Can anyone help me? I've been stuck with this problem for hours
boyakko [2]

Answer:

336.02 square centimeters

Step-by-step explanation:

The surface area is the area of all the surfaces of the prism shown.

The prism has 7 surfaces.

Top and Bottom are pentagons with side lengths of 5.

The other 5 side surfaces are rectangles with length 10 and width 5.

Note the formulas of area of pentagon and area of rectangle below:

Area of Rectangle = Length * Width

Area of Pentagon = \frac{1}{4}\sqrt{25+10\sqrt{5} }* a^2 ,  where a is the side length

Lets find area of each of the surfaces:

<u>Top Surface</u> (Pentagon with side length 5) = \frac{1}{4}\sqrt{25+10\sqrt{5} }* a^2=\frac{1}{4}\sqrt{25+10\sqrt{5} }* (5)^2=43.01

<u>Bottom Surface</u> = same as Top Surface = 43.01

<u>Side Surface</u> (rectangle with length 10 and width 5) = 10 * 5 = 50

There are 5 side surfaces that are each 50 sq. cm. so area would be:

<u>Area of 5 Side Surface</u> = 5 * 50 = 250

Total Surface Area = 250 + 43.01 + 43.01 = 336.02 square centimeters

4 0
3 years ago
a family has 8 girls and 4 boys. A total of 2 children must be chosen to speak on behalf of the family at a local benefit. What
Vesna [10]
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5 0
3 years ago
Multiply 328.1 × 0.63 = ____
ValentinkaMS [17]
206.703  thats the answer, trust me i used a calculator lol
5 0
3 years ago
Read 2 more answers
Joaquin wrote this equation for the area of a parallelogram.
Sindrei [870]

divide 417.12 by 23.7, and get your answer: <u>17.6</u>
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3 years ago
Which expression best represents the phrase"7 less than the quotient of 2x and 5"
vichka [17]

Answer:

x9-7

Step-by-step explanation:

3 0
3 years ago
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