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2 years ago

Math world problems, i think inequalities.

Mathematics

1 answer:

denis23 [38]2 years ago

7 0

Answer:

ok i will explain inequalities here is a example problem

x-12=15 add 12 to both sides x-12+12=15+15 is the opposite for adding in adding you have to subtract the both numbers like in adding

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Is 3/4 larger than 6/7

Ket [755]

6/7 (85%) is bigger than 3/4 (75%)

3 0

3 years ago

Solve both! For x |X + 2| > 5 |X + 2| < 5

NISA [10]

Answer:

Your Answer is ...

x > 3 or x < -7

Step-by-step explanation:

1. x > 3 worked out

|X + 2| > 5

Solve absolute Value

|X + 2| > 5

We know either |X + 2| > 5 or x + 2 < - 5

_________________________________

$x + 2 > 5\\x + 2 - 2 > 5 - 2 (Subtract ~2~ from~Both~sides)\\ x >3$

2. x < -7 Worked out

$x + 2 < - 5\\x+2-2>5-2 (Subtract~2~from~Both~sides)\\x$

Hope this Helps!

Take Care!

$-Jay-$

4 0

2 years ago

Need help! Please hurry!!! Only have one person answer though!

Olegator [25]

Answer:

-7(a + 2b + 4)

Step-by-step explanation:

-7a - 14b - 28

⇒ -7(a + 2b + 4)

6 0

2 years ago

In a memory experiment, Alice is able to memorize words at a rate given by m '(t)= - 0.009t^2 + 0.6t. In the same memory exper

White raven [17]

Answer:

1) Ben, 2) $\Delta = 2$ , 3) $\dot m = 2.7$ , 4) $\dot M = 2.9$

Step-by-step explanation:

1) Ben has a higher rate of memorization, since the coefficient of the second power is lesser than the one from Alice.

2) The number of words can be estimated by integrating the function:

Alice

$\Delta m = -0.003\cdot (10\,min)^{3} + 0.3\cdot (10\,min)^{2}$

$\Delta m = 27$

Ben

$\Delta M = -0.001\cdot (10\,min)^{3} + 0.3\cdot (10\,min)^{2}$

$\Delta M = 29$

$\Delta = \Delta M - \Delta m$

$\Delta = 2$

3) The average amount of words per minute is:

$\dot m = \frac{27}{10}$

$\dot m = 2.7$

4) The average amount of words per minute is:

$\dot M = \frac{29}{10}$

$\dot M = 2.9$

4 0

3 years ago

Which function has a minimum of -4?

icang [17]

I think it is c but I’m not sure

7 0

7 months ago