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kotykmax [81]
2 years ago
14

3s+7=S+5 Please help me

Mathematics
2 answers:
sammy [17]2 years ago
6 0
3s+7=S+5
-7 -S
2s = -2
S= -1
Dimas [21]2 years ago
3 0
3s + 7= s + 5
3s + 7 - s  = 5
2s + 7  = 5 
2s = 5 - 7
2s =  -2
s = -2/2
s = -1

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A family has two cars. the first car has a fuel efficiency of 40 miles per gallon of gas and the second has a fuel efficiency of
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Let x and y represent the numbers of gallons used by the 40 mpg and 35 mpg cars, respectively.
.. x +y = 40 . . . . . . . . . . .total consumption is 40 gallons
.. 40x +35y = 1525 . . . . total miles driven = 1525

Multiply the first equation by 40 and subtract the second.
.. 40(x +y) -(40x +35y) = 40(40) -(1525)
.. 5y = 75
.. y = 15
.. x = 40 -15 = 25

The 40 mpg car consumed 25 gallons.
The 35 mpg car consumed 15 gallons.
7 0
3 years ago
the measures of the side of a triangle are 4√2 cm, 4√2 cm qnd 8√2 cm. what is the perimeter of the triangle?​
spin [16.1K]

Answer:

16\sqrt{2}

Step-by-step explanation:

Add up all the sides to get the perimeter:

4\sqrt{2} + 4\sqrt{2} +8\sqrt{2} = 16\sqrt{2}

8 0
2 years ago
When Kimchi is made, it is initially fermented for the first 3 days at a temperature of 70 degrees Fahrenheit and then immediate
svet-max [94.6K]

The given temperatures of 70 °F, 50 °F, and 35 °F, at the given 3, 3, and

6 days give the following step function;

\begin{cases}f(x) = 70^{\circ }  & \text{ if } 0 \leq x \leq 3 \\f(x) = 50^{\circ} & \text{ if } 3 < x \leq 6 \\ f(x) = 35^{\circ }& \text{ if } 6 < x \leq 12 \end{cases}

  • Please find attached the graph of the step function?

<h3>How can the step function be written?</h3>

The temperature at it is fermented in the first three days = 70 °F

From day 3 to 6 the temperature = 50 °F

From day 6 to day 12, the temperature at which it is kept in the freezer = 35 °F

The step function is therefore;

\begin{cases}f(x) = 70^{\circ }  & \text{ if } 0 \leq x \leq 3 \\f(x) = 50^{\circ} & \text{ if } 3 < x \leq 6 \\ f(x) = 35^{\circ }& \text{ if } 6 < x \leq 12 \end{cases}

The graph of the above function created with MS Excel is attached

Learn more about step functions here:

brainly.com/question/2509505

8 0
2 years ago
Pls answer asap!! will mark brainliest giving 50 points ty ily &lt;3
malfutka [58]

Answer:

56

Step-by-step explanation:

Keep the order of opperations in mind when doing this (PEMDAS). First, solve what is inside the parentheses (6-1). Then, solve the exponent and the multiplication (6² and 5×5). Finally, finish adding and subtracting to get the answer.

4 0
3 years ago
Read 2 more answers
What is 4xy - 5y² - 3x² from 5x + 3y² - xy ? ​
andre [41]

Refer the attachment for your answer

6 0
2 years ago
Read 2 more answers
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