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Umnica [9.8K]
2 years ago
9

Write an equivalent expression in simplest form. 3+2(5x)-7

Mathematics
1 answer:
Anettt [7]2 years ago
7 0

Answer:

10x-4

Step-by-step explanation:

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A square has a perimeter of 12x + 52 units. Which expression represents the side length of the square in units?
DochEvi [55]
1. Find the surface area of the rectangular prism. (1 point) 
<span>Measures are 2, 3, and 4 inches. Let W=2, L=3, H=4 </span>
<span>a rectangular has six sides, the total surface area is equal to 6 plains: </span>
<span>2*W*L + 2*L*H + 2*L*W </span>
<span>= 2*(W*L + L*H + L*W) </span>
<span>= 2 * (2*3 + 3*4 + 4*2) </span>
<span>= 2 * ( 6 + 12 + 8 ) </span>
<span>= 2 * 26 </span>
<span>= 52 ................... the last choice </span>

<span>2. A cube has a side length of x feet. Which expression represents the surface area of the cube? (1 point) </span>

<span>Area of one face = x^2, Total Area of 6 faces = 6*x^2 = 2x^2 units </span>


<span>3. Find the surface area of the cylinder. Use 3.14 for pi . (1 point) </span>
<span>Length: 15 cm, Diameter: 2 cm </span>
<span>A cylinder has 3 surfaces: two circles + one curved surface area </span>
<span>...... two circles of 2cm diameter (1cm radius) </span>
<span>A = pi*r^2 = 3.14*1*1 = 3.14 sq. cm ...... two circles' area = 6.28 sq.cm </span>
<span>Curved surface area = circumference * length </span>
<span>.... circumference = pi*d = 3.14 * 2 = 6.28 cm ......... length = 15 </span>
<span>curved surface area = 6.28*15 = 94.2 sq. cm </span>

<span>Add both for total surface area = 6.28 + 94.2 = 100.48 sq.cm </span>


<span>4. The bottom of a shopping bag measures 8 inches by 10 inches. The bag has a height of 12 inches. How much paper is needed to make the bag? (1 point) </span>
<span>two pieces of paper ... one for bottom = 8*10 = 80 sq.in </span>
<span>the other ... height * perimeter of the bottom = 12*(2*(10+8)) = 12 * 2 * 18 = 432 sq.in </span>
<span>Add both: 80 + 432 = 512 sq.in <<<<<<<<<<<</span>
4 0
3 years ago
Read 2 more answers
Ralph Warren purchased 27 shares of stock at 16 3/8 per share. He paid a $27.50 brokerage fee. He later sold all 27 shares at 17
kifflom [539]

Based on the number of shares that Ralph Warren purchased, the total cost of the stock was<u> $469.63.</u> The amount he received from sales was <u>$447.13.</u> The capital loss was <u>$22.50.</u>

<h3>What was the gain on the sale of the shares?</h3>

The cost of the stock was:

= (27 x 16³/₈) + 27.50

= $469.63

The amount received from sales:

= (27 x 17⁵/₈) - 28.75

= $447.13

This capital gain (loss):

= 447.13 - 469.63

= -$22.50

Find out more on capital gain at brainly.com/question/4301877

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7 0
2 years ago
Bill went to the mall to buy a new pair if tennis shoes. Calculate the sales tax and total price of a $665 pair of shoes with a
murzikaleks [220]
First you multiply 665*6.25=4156.25

Second you add 665+<span>4156.25=706.5625</span>
4 0
3 years ago
What is the value of x?
olga2289 [7]

Answer:

98 degrees

Step-by-step explanation:

first find angle G

53 + 45 + G = 180

subtract 45 and 53 from both sides

G = 82

angle g is supplementary (add up to 180) to x

x +82 = 180

subtract 82 from both sides

x = 98

7 0
2 years ago
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A father and his young toddler are walking along the sidewalk. For every 3 steps the father takes, the son takes 5 steps just to
Contact [7]

Answer:

If the son takes 5 steps just to keep up thrn tha number of strps the sun has to take to arrive to destination along with his father would be double the number of steps the father decides to take

4 0
3 years ago
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