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Natali [406]
3 years ago
10

ricarda earns 25 allowance each week how much allowance will she earn after 7 weeks and you have to use area model

Mathematics
1 answer:
Rainbow [258]3 years ago
3 0

25×7=175

____<u>20</u>__________<u>5</u>____                                                                            

|         140          |         35             |    7                    

|                         |                           |

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Find a formula for the described function. an open rectangular box with volume 9 m3 has a square base. express the surface area
Maru [420]

Let

x--------> the length side of the square base

h--------> the height of the box

we know that

<u>the volume of the box is equal to</u>

V=x^{2} *h\\ V=9\ m^{3}

so

x^{2} *h=9\\\\h=\frac{9}{x^{2} }

<u>the surface area of the box is equal to</u>

SA=area\ of\ the\ base+perimeter\ of\ base*height (remember that the box is open)

area of the base=(x^{2})\ m^{2}

Perimeter of the base=(4*x)\ m

height=(h) m

h=\frac{9}{x^{2}}

substitute

SA=x^{2} +4*x*h\\ \\ \\ SA=x^{2} +4*x*\frac{9}{x^{2} } \\ \\ SA=x^{2} +\frac{36}{x}

we know that

the value of x can not be negative and the denominator can not be zero

therefore

<u>the answer is</u>

the domain of  SA is x> 0

the domain is the interval-------------> (0,∞)

6 0
3 years ago
If a temperature in degrees Celsius this is given as C finding the sum of 1.8 timesC and 33 gives the temperature in degrees Fah
aleksley [76]
Alright well first off, converting Celsius to Fahrenheit is 1.8c+32. converting Fahrenheit to Celsius is 5(f-32)/9.
the temperature in Fahrenheit is given by °f.
40°c is equal to 104°f.
3 0
3 years ago
During a promotional event a sporting goods store gave a free t-shrit to every 10 customer and a free water bottle to every 15 c
SVETLANKA909090 [29]

9514 1404 393

Answer:

  30th

Step-by-step explanation:

The least common multiple of 10 and 15 is 30.

  30 = 10×3 = 15×2

The 30th customer will be the first to receive both promotional items.

3 0
3 years ago
A curtain company has 1,787 yards of fabric to make identical curtains. If each curtain requires 6.5 yards of fabric, how many c
zysi [14]

Answer:

D. 274

Step-by-step explanation:

divide 1787 by 6.5 yds to get the answer, 274.

3 0
3 years ago
What is 245 and 7/50 in decimal form
kondaur [170]

Answer:

245=2.45

7/50=0.14

Step-by-step explanation:

divide by 100

USE MATHAWAY DOT COM!!

7 0
3 years ago
Read 2 more answers
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