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lana66690 [7]
2 years ago
7

Someone plz help meh

Mathematics
1 answer:
gogolik [260]2 years ago
7 0

Answer:

<em>f( g ( - 2 ) ) = - 14 </em>

Step-by-step explanation:

f(x) = - 2x + 4

g(x) = 3x² - x - 5

f( g ( - 2 ) ) = ?

g( - 2 ) = 3( - 2 )² - ( - 2 ) - 5 = 12 + 2 - 5 = 9

f(9) = - 2 × 9 + 4 = - 14

<em>f( g ( - 2 ) ) = - 14</em>

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If m = 22 and n = 3, what is the value of the following expression? m - 5 • n + 3 A. 51 B. 10 C. 4 D. 54
melisa1 [442]

The answer is B, 10.


Step-by-step explanation: You plug in the values where the variables are, then follow PEMDAS, beginning with 5 times 3.


4 0
2 years ago
The height of a volleyball, h, in feet, is given by h = −16t2 + 11t + 5.5, where t is the number of seconds after it has been hi
slavikrds [6]

Answer:

It will travel high enough

Step-by-step explanation:

Find the vertex of the parabola:

x=-b/2a

x=-11/2(-16)

x=-11/-32

x=11/32

Plug x=11/32 into quadratic to get the y-coordinate:

h=-16(11/32)^2+11(11/32)+5.5

h=7.391

Since 7.391>7.3, the volleyball will travel high enough (aka. yes)

3 0
3 years ago
A water tank in the shape of a rectangular prism has a length of 525 feet, width of 423 feet, and height of 449 feet.
TEA [102]

Answer:

84 cubic feet

Step-by-step explanation:

First, multiply the numbers to get the volume.

5 2/5 * 4 2/3= 25 1/5

25 1/5 * 4 4/9= 112

Then, we can find 3/4 of that.

112*3/4=84.

6 0
3 years ago
Read 2 more answers
Rationalize the denominator and simplify.<img src="https://tex.z-dn.net/?f=15%20%5Csqrt%7B6%7D%2F3%20%5Csqrt%7B5%3Cbr%3E%0A" id=
Bumek [7]
(15√6 / √5)

<span>(15√6/√5) *(</span>√5/√5)

(15*√6*√5)/(√5*√5)

15*√30 / 5

3√30
3 0
3 years ago
I GIVEEEEE BRAIMLILSTER
timofeeve [1]

<u>Answer:</u>

\boxed{\boxed{\pink{\bf \leadsto It \ will \ take \ 5 hours \ to \ travel \ 300 \ miles. }}}

<h3><u>Step-by-step explanation:</u></h3>

According to Question , a plane travels 120 miles in 2 hours. So here we will use unitary method .

\bf\implies If \ it \ covers \ 120 \ miles \ in \ 2 \ hours \\\\\bf\implies Then \ one \ mile \ will \ be \ covered \ in \ \dfrac{120}{2} hrs \\\\\bf\implies Hence \ 300 \ miles \ will \ be \ covered \ in \ \dfrac{2}{120}\times 300 hrs = \red{5 \ hours }

<h3><u>Hence</u><u> </u><u>it </u><u>will</u><u> </u><u>cover</u><u> </u><u>30</u><u>0</u><u> </u><u>miles</u><u> </u><u>in</u><u> </u><u>5</u><u> </u><u>hours</u><u> </u><u>.</u></h3>

Here it was a case of direct proportion in which if two things are directly proportional to each other. If one thing thing increases then the value of second also increases. Here if the time increases then the distance also increases

5 0
2 years ago
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