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olganol [36]
3 years ago
10

Explain how to do B and D please

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
4 0

Answer:

18 ft/ 20 min = 0.90 ft/min is the greatest speed.

Step-by-step explanation:

You must find the unit rate of change for all four items:  A through D.  This will require some conversion of units of measurement.  Next you must determine which of your four results is the greatest / fastest.

A.  18 ft / 20 min = 9/10 ft/min, or 0.90 ft/min

B.  90 ft / 2.5 hr = 90 ft / 150 min = 6/10 ft/min, or 0.6 ft/min

C.  20 yd / 1.5 hr = 60 ft / 90 min = 6.7/10 ft/ min, or 0.67 ft/min

D.  3 2/3 yd / 15 min = (11/3)(3 ft) /  15 min = 7.3/10 ft /min, or 0.73 ft/min

Arranged in increasing size, we have:

6/10 ft/min, 6.7/10 ft/min, 7.3/10 ft/min and 9/10 ft/min.

The first answer choice, 9/10 ft/min, is the greatest speed.

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a chocolate chip cookie has 10 more calories than an ice cream cone. together they have a total of 310 calories.
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Answer:

The total would be 300

Step-by-step explanation:

310

-10

-----

300

5 0
3 years ago
Solve the equation 3^(2x) -4*3^(x+1) + 27 = 0. use rules of exponents to change 3^(x+1)​
Leviafan [203]

Answer:

\huge\boxed{x=1\ \vee\ x=2}

Step-by-step explanation:

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\text{We return to substitution:}\\\\3^x=t\\\\3^x=3\ \vee\ 3^x=9\\\\3^x=3^1\ \vee\ 3^x=3^2\\\\\boxed{x=1}\ \vee\ \boxed{x=2}

4 0
2 years ago
What is the value of :-<br><br>=》<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B4%20-%204%7D%7B5%20-%205%7D%20" id="TexFormu
Tresset [83]

Answer:

the value is undefined

Step-by-step explanation:

hey there,

->

\frac{4 - 4}{5 - 5}

->

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0 divided by 0 is undefined

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two random samples of 25 people were asking how many 12 oz cans of soda they consume each week first sample contains both males
dezoksy [38]

Answer:

One inference that can be made is that the age group of 12-19 consume more sodas than the age group of 20-39.

Step-by-step explanation:

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2 years ago
A rectangle is 25 feet long.Its area is 375 square feet. What is the width of the rectangle?
frosja888 [35]

To find the width, divide the area by the length.

Width = 375 / 25

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6 0
3 years ago
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