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3 years ago

Perform the indicated operation. (-6)(4) 10 -10 24 -24

Mathematics

2 answers:

Scrat [10]3 years ago

8 0

Answer:

-24

Step-by-step explanation:

(-6)(4)

To perform the indicated operation we multiply

When we multiply a positive number by positive number then answer is positive

negative times negative is positive

positive times negative is negative

negative times positive is negative

(-6)(4)

we multiply negative number by positive number so its negative

-6 times 4 is -24

$(-6)(4)=-24$

ladessa [460]3 years ago

7 0

I did the operation I got -24

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Lisa uses her hair dryer daily dryer uses 1500 watts. it take 10 mintes to dry her hair each time she uses it. how much would it

Volgvan

Answer:

Step-by-step explanation:

The answer is $11.55 for the week.

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2 years ago

Solve for n. 1/2n+3/4n=12

sveta [45]

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Hope this helped :)

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3 years ago

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Fantom [35]

Answer:

See below.

Step-by-step explanation:

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2 years ago

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Nataly [62]

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3 years ago

The height of an object tossed upward with an initial velocity of 120 feet per second is given by the formula h = −16t2 + 120t,

AleksAgata [21]

Answer:

7.5 seconds

Step-by-step explanation:

$h = - 16 {t}^{2} + 120t \\ \because \: we \: have \: to \: find \: the \: time \: required \: \\ for \: the \: object \: to \: return to \: its \: \\ point \: of departure. \\ \therefore \: plug \: h = 0 \: in \: the \: given \: euation. \\ \therefore \: 0 = - 16 {t}^{2} + 120t \\ \therefore \:16 {t}^{2} - 120t = 0 \\ \therefore \:8t(2t - 15) = 0 \\ \therefore \:8t = 0 \: \: or \: \: (2t - 15) = 0 \\ \therefore \:t = \frac{0}{8} \: or \: t = \frac{15}{2} \\ \therefore \:t = 0 \: or \: t = 7.5 \\ \because \: t = 0 \: is \: not \: possible \\ \huge \purple{ \boxed{ \therefore \: t = 7.5 \: seconds}}$

Thus, the time required for the object to return to its point of departure is 7.5 seconds.

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2 years ago