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Aleksandr [31]
2 years ago
12

Please complete marking the first answer brainliest!

Mathematics
1 answer:
melomori [17]2 years ago
5 0

Answer:

$31.56

Step-by-step explanation:

$9.85 × 4 = $39.40

$39.40 25% off is $29.55

6.75% rounded to the nearest cent 6.80%

Sales tax is $2.01

$29.55 + $2.01 = $31.56

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Convert 77 degrees in Fahrenheit to Celsius temperature using the formula . 72°C 61°C 35°C 25°C
faust18 [17]

Answer:

25º celsius

Step-by-step explanation:

The formula for converting fahrenheit to celsius is: Deduct 32, then multiply by 5, then divide by 9

77 - 32 = 45 x 5 = 225/9 = 25º

8 0
2 years ago
Your neighbor burns 100 Calories in 10 minutes​ cross-country skiing. There is a proportional relationship between Calories burn
Zinaida [17]

Answer:

10

Step-by-step explanation:

For every one minute 10 calories are being burned

4 0
3 years ago
The rate at which a professional tennis player used carbohydrates during a strenuous workout was found to be 1.7 grams per minut
Alex787 [66]

Answer:

<em>m=1.7</em>

<em>C=68 gr</em>

Step-by-step explanation:

<u>Function Modeling</u>

We are given a relationship between the carbohydrates used by a professional tennis player during a strenuous workout and the time in minutes as 1.7 grams per minute. Being C the carbohydrates in grams and t the time in minutes, the model is

C=1.7t

The slope m of the line is the coefficient of the independent variable, thus m=1.7

The graph of C vs t is shown in the image below.

To find how many carbohydrates the athlete would use in t=40 min, we plug in the value into the equation

C=1.7\cdot 40=68\ gr

8 0
3 years ago
Simplify the expression where possible. (t 9) -8
makvit [3.9K]

Answer:

\frac{1}{t^{72}}.

Step-by-step explanation:

To solve this problem, we need to simplify the expression (t^{9})^{-8}.

We know that (x^{a})^{b} = x^{ab}

Therefore:

(t^{9})^{-8} =t^{-72} =\frac{1}{t^{72}}.

7 0
3 years ago
A scale model of a human heart is 16ft long. The scale is 32:1. How many inches long is the actual heart it represents?
melisa1 [442]
0.5 or 6 inches
The model=32
Actual size=1

32/1= 16/?
  If 32 is 1 foot which equals 12 inches, and 16 is half of  32, then 16 is 0.5 inches or 6 inches
4 0
3 years ago
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