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2 years ago

I need help with these two

Mathematics

1 answer:

Alika [10]2 years ago

4 0

Answer:

19. A

20. A

Step-by-step explanation:

19. tan(53)=15/x

x(tan(53))=15

x=15/(tan53))

x=11.3 feet

20. tan(60)=12/x

x(tan(60))=12

x=12/(tan(60))

x=6.93, or 4sqrt3

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Plese HELP !!!

beks73 [17]

Answer:

-9/8

Step-by-step explanation:

$\frac{-2a^{-3}b^2}{a} \\ \\ =-\frac{2b^2}{a^4} \\ \\ =-\frac{2(3)^2}{(-2)^4} \\ \\ =-\frac{18}{16} \\ \\ =-\frac{9}{8}$

6 0

1 year ago

PLEASEE HELP ME!!!!

Svet_ta [14]

The angle would be 35 degrees (the complement is 90-35 = 55 degrees.) Hope this helps!

3 0

3 years ago

Read 2 more answers

Emma is training for a 10-kilometer race. She wants to beat her last 10-kilometer time, which was 1 hour 10 minutes. Emma has al

Mandarinka [93]

Answer:

$70 > 55 + t$

Step-by-step explanation:

Given

$Previous\ Time = 1\ hr\ 10\ mins$

$Current\ Time = 55\ mins$

Required

Represent the additional time needed as an inequality

Convert the previous time to minutes

$Previous\ Time = 1\ hr\ 10\ mins$

$Previous\ Time = 1 * 60\ mins + 10\ mins$

$Previous\ Time = 60\ mins + 10\ mins$

$Previous\ Time = 70\ mins$

Let the additional time be t

<em>This means that she needs to run at least t minutes to beat her previous record</em>

<em />

To beat her previous record, the sum of current time and x must be less than her previous time. i.e.

$55 + t < 70$

This can be rewritten as:

$70 > 55 + t$

7 0

2 years ago

Read 2 more answers

Pls don't waste my time cuz I need to submit this later 3 am

Andreas93 [3]

Step-by-step explanation:

A rational function the ratio of two polynomial functions, where the polynomial in the denominator is not equal to zero.

5 0

2 years ago

Find the surface area of this rectangular prism.

kap26 [50]

Answer:

102 un²

Step-by-step explanation:

Area surface = 4( 3 x 7 ) + 2( 3 x 3 )

4( 21 )+ 2( 9 ) =

84 + 18 = 102 un²

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

3 0

2 years ago