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3 years ago

12

71/5-62/5 what is the answer

2 answers:

Marina86 [1]3 years ago

4 0

If you would like to calculate 71/5 - 62/5, you can do this using the following steps:

71/5 - 62/5 = (71 - 62) / 5 = 9/5 = 1 4/5

The correct result would be 1 4/5.

ira [324]3 years ago

3 0

We have the same denominator....therefore, we can subtract them and leave the denominator.

71-62= 9

9/5

Now we simplify

9/5, 9 goes into 5, one time.
1
9-5=4

1 4/5 is the answer

Our final answer : 1 4/5

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Find the value of x (4x-10) (x)

mote1985 [20]

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3 years ago

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marusya05 [52]

Answer:

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3 years ago

The maximum value of the function: f(x)= -5 x ^2 +30x-200 is?

VARVARA [1.3K]

Answer:

$\displaystyle - 155$

Step-by-step explanation:

we are given a quadratic function

$\displaystyle f(x) = - 5 {x}^{2} + 30x - 200$

we want to figure out the minimum value of the function

to do so we need to figure out the minimum value of x in the case we can consider the following formula:

$\displaystyle x _{ \rm min} = \frac{ - b}{2a}$

the given function is in the standard form i.e

$\displaystyle f(x) = a {x}^{2} + bx + c$

so we acquire:

b=30
a=-5

thus substitute:

$\displaystyle x _{ \rm min} = \frac{ - 30}{2. - 5}$

simplify multiplication:

$\displaystyle x _{ \rm min} = \frac{ - 30}{ - 10}$

simply division:

$\displaystyle x _{ \rm min} = 3$

plug in the value of minimum x to the given function:

$\displaystyle f (3)= - 5 {(3)}^{2} + 30.3 - 200$

simplify square:

$\displaystyle f (3)= - 5 {(9)}^{} + 30.3 - 200$

simplify multiplication:

$\displaystyle f (3)= - 45 + 90- 200$

simplify:

$\displaystyle f (3)= - 155$

hence,

the minimum value of the function is -155

5 0

3 years ago

Someone help with this

vlada-n [284]

Answer:

-7/8 the first one

Step-by-step explanation:

they're both the same

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Step-by-step explanation:

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