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2 years ago

7

Add: (–21) + (–37) + (–15)

1 answer:

Rina8888 [55]2 years ago

4 0

Answer:

the answer is -73

Step-by-step explanation:

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Rewrite in simplest form. 5x3 + 5x2 - 3x - 3x2

vovangra [49]

Answer:

(25)-(3)

Step-by-step explanation:

7 0

2 years ago

The expression 2x + 50 represents the elevation above sea level, in meters, of a rock climber after x minutes of climbing. What

vova2212 [387]

We let y equal to the elevation above sea level so that the elevation of the rock climber after x minutes of climbing would be:

y = 2x + 50

His initial height can be calculated when x is equal to zero it is when the climber is not yet climbing. Therefore, the rock climber'sinitial height above sea level would be 50 meters.

7 0

3 years ago

Can somebody help me with this please?

Svetach [21]

Multiply both sides by -4/7
$x = 40 \times ( \frac{ - 4}{7} ) \\ x = \frac{ - 160}{7}$

7 0

2 years ago

The given two-parameter family is a solution of the indicated differential equation on the interval

mr_godi [17]

Answer:

I do 1 option for you as an example, you need to check the leftover by yourself.

Step-by-step explanation:

for d) y(0) = 0 and y'(pi) =0

$y(0) = C_1e^0cos(0)+ C_2 e^0 sin(0) = 0 \longrightarrow C_1 = 0$

$y(x) ' = C_1e^x cos(x) - C_1e^x sin (x) + C_2e^x sin(x) + C_2e^x cos(x)$

$y(\pi)'=C_1e^\pi cos(\pi)- C_1e^\pi sin(\pi)+ C_2e^\pi sin(\pi) + C_2e^\pi cos (\pi)$

Replace $C_1 = 0$ we have

$y'(\pi) = -C_2e^\pi = 0$

if and only if $C_2 =0$

Hence the given solution does not work.

then, d is NOT the correct answer.

3 0

2 years ago

Calculate the value of x in the equation 2x - 15 =5 - 3×

pshichka [43]

$\bold{2x - 15 = 5 - 3x} \\ \bold{2x + 3x = 15 + 5} \\ \bold{5x =20 } \\ \bold{x = \cancel{ \frac {20}{5} }} \\ \bold{x = 4}$

Hope it helps

3 0

1 year ago

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