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3 years ago

You have 40 minutes to exercise at the gym, and you want to burn 300 calories total using both

1 answer:

6 0

A and b are the minutes spent on machine A and machine B, respectively.

a+b = 40
b = 40-a

8a + 6b = 300
8a + 6(40-a) = 300
8a + 240 - 6a = 300
2a = 60
a = 30
b = 40-a = 10

30 minutes on machine A and 10 minutes on machine B

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Question 1

PilotLPTM [1.2K]

answer: where is the question?

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3 years ago

A rectangular garden has an area of 360 square feet. the length of the garden is 9 feet longer than the width. find the dimensio

rosijanka [135]

$\huge\underline{\frak{ \: \: \: \: \: \: Solution : \: \: \: \: \: \: }} \\ \\$

$\frak {\pink{Let}}\begin{cases} \sf{\red{Breadth \: be \: x}}\\ \sf{\orange{The \: Length = x + 9}}\end{cases} \\$

$\bigstar \: \underline{\textsf{According to the given Question :} }\\ \\$

$:\implies \sf Area = Length \times Breadth \\ \\ \\$

$:\implies \sf 360=(x + 9 ) x \\ \\ \\$

$:\implies \sf 360= {x}^{2} + 9x \\ \\ \\$

$:\implies \sf {x}^{2} + 9x - 360 = 0\\ \\ \\$

$:\implies \sf {x}^{2} + 24x - 15x - 360 = 0\\ \\ \\$

$:\implies \sf x(x + 24) - 15(x + 24) = 0\\ \\ \\$

$:\implies \sf (x + 24) \: (x - 15) = 0\\ \\ \\$

$:\implies \underline{ \boxed{ \sf x = - 24 \: or \: x = 15}}\\ \\ \\$

$\therefore\:\underline{\textsf{Ignoring the negative value, the Breadth of rectangular garden is \textbf{15 ft}}}. \\ \\ \\$

$\bigstar \: \underline{\textsf{Dimensions of rectangular garden :}} \\ \\$

$\bullet\:\:\textsf{The Breadth of rectangular garden = x = \textbf{15 ft.}} \\ \\$

$\bullet\:\:\textsf{The Length of rectangular garden = x + 9 = 15 + 9 = \textbf{24 ft.}} \\ \\$

6 0

3 years ago

Free points and brainliest if correct<br> 11÷∛100·198³

azamat

Answer:

49297810.2183

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Convert to proper fraction or mixed number (do not reduce to lowest terms): .851

Veronika [31]

Just look at where the 1 is at and then divide it by the place value. The 1 is in the thousandths place so the fraction would look like the following

$\frac{851}{1000}$

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3 years ago

Read 2 more answers

I need help asap please

Zigmanuir [339]

3/5 is smaller then 3/4(you can tell from denominators) 5/8 is smaller then 3/5, and 7/4 is greater then 1, so the only logical one is C. Hope this helped!

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3 years ago