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Rudik [331]
3 years ago
11

I need help ASAP please giving brainliest

Mathematics
1 answer:
vlabodo [156]3 years ago
6 0

Answer:

Step-by-step explanation:

A and B form a right angle

meaning that A+B=90

if A=58

B=90-58 = 32

answers

B is acute angle, true

second statement is False

Last statement is true

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Arithmetic mean of marks (out of 25) scored by 10 students was 15. One of the student, named Karishma enquired the other 9 stude
erastova [34]

Answer:

Krishna's marks x marks

so...

xˉ=15

xˉ=15n=10

xˉ=15n=10∑x=x+x−8+x−6+x−3+x−1+x+x+2+x+3+x+4+x+6=10x−3

15=10x-3/10

150+3=10x

x=150/10=15.3 marks

<em><u>Krishna scored 15.3 marks.</u></em>

<em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>helps</u></em><em><u> </u></em><em><u>you</u></em><em><u> </u></em><em><u>sis</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

3 0
2 years ago
Suppose an airline policy states that all baggage must be box shaped with a sum of length, width, and height not exceeding 174 i
Leya [2.2K]

Answer:

The square-based box with the greatest volume under the condition that the sum of length, width, and heigth does not exceed 174 in is a cube with each edge of 58 in and a volume of 195112 in^{3}

Step-by-step explanation:

For this problem we have two constraints, that are as follows:

1) Sum of length, width, and heigth not exceeding 174 in

2) Lenght and width have the same measure (square-based box)

We know that volume is equal to the product of all three edges, and with the two conditions into account we have the next function:

V=(w^{2})(174-2w)\\V=174w^{2}-2w^{3}

The interval of interest of the objective function is [0, 87]

This problem requieres that we maximize the function that defines the volume. We start calculating the derivative of the function, wich is:

V'=348w-6w^{2} \\V'=(348-6w)(w)

We need to remember that the derivative of a function represents the slope of said function at a given point. The maximum value of the function will have a slope equal to zero.

So we find the value in wich the derivative equals zero:

0=(348-6w)(w)\\w_1=0\\w_2=348/6=58

The first value (w=0) will leave us with a 'height-only box', so the answer must be w=58 in

The value is between the interval of interest.

And, once we solve for the constraints, we have that:

Lenght = Width = Heigth = 58 in

Volume = 195112 in^{2}

8 0
3 years ago
I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would
kolbaska11 [484]
I will try to help okay i will send my friends to help
6 0
2 years ago
Read 2 more answers
Can someone please help, ty!<br> Will mark brainliest!
noname [10]

Answer:

I and II

Step-by-step explanation:

I used a graphing calculator to find the answers.

4 0
3 years ago
2. Susan works as a secretary in an accounting firm. Her hourly rate is $13.50, and her regular
umka2103 [35]

Step-by-step explanation:

$13.50 per hour. 40 hours per week.

that makes her regular weekly income

40×13.5 = $540.00

in that particular week she had 8 his overtime in addition.

the overtime hourly rate is

13.5 × 1.5 = $20.25

so, she earned an additional

8×20.25 = $162.00

therefore she earned in that week in total

540 + 162 = $702.00

5 0
3 years ago
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