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3 years ago

I need help with this answer PLEASE I’m stuck

Mathematics

2 answers:

NikAS [45]3 years ago

8 0

Answer:

Step-by-step explanation:

happy holidays

UkoKoshka [18]3 years ago

5 0

Answer:

40% of airline A's flights were on time

Step-by-step explanation:

0.4=40% .the top row indicates that it was airline A. the left column indicates that it was on time.

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1. Bob tried to answer the following question by finding the missing angle and rounding the answer to the nearest degree.

iren2701 [21]

Answer:

Part 1)

Bob's mistake was to have used the cosine instead of the sine

The measure of the missing angle is $53.13\°$

Part 2) The surface area of the pyramid is $288\ cm^{2}$

Step-by-step explanation:

Part 1)

Let

x----> the missing angle

we know that

In the right triangle o the figure

The sine of angle x is equal to divide the opposite side angle x to the hypotenuse of the right triangle

$sin(x)=\frac{16}{20}$

$x=arcsin(\frac{16}{20})=53.13\°$

Bob's mistake was to have used the cosine instead of the sine

Part 2) we know that

The surface area of the square pyramid is equal to the area of the square base plus the area of its four lateral triangular faces

$SA=b^{2}+4[\frac{1}{2}(b)(h)]$

where

b is the length side of the square

h is the height of the triangular lateral face

In this problem

$h=b/2$ -------> by an 45° angle

$b=2h$

$sin(45\°)=\frac{h}{6\sqrt{2}}$

$h=6\sqrt{2}(sin(45\°))=6\ cm$

Find the value of b

$b=2(6)=12\ cm$

Find the surface area

$SA=12^{2}+4[\frac{1}{2}(12)(6)]=288\ cm^{2}$

3 0

4 years ago

HELPPP pleaseeeeeeee

ladessa [460]

Answer:

I think the answer is 200 yards good luck

6 0

3 years ago

ivan earns 8 each time he walk his neighbors dog he already walked the dog 5 times how many more times does he need to walk the

Kaylis [27]

He would probably have to walk the dog seven more times

5 0

3 years ago

Please help and explain all the way

Nesterboy [21]

Answer:

1.4 oz

Step-by-step explanation:

you know 3.5oz is 2.5 servings and you need to know what one is

3.5/2.5 = 1.4

one serving is 1.4

check -> 1.4 x 2.5= 3.5

4 0

3 years ago

Factor: 3x^2+6x-24<br> I WILL REWARD brainliest. Please explain step by step if you could.

Nonamiya [84]

Answer:

3(x−2)(x+4)

Step-by-step explanation:

Dude its really hard to make a explanation. I recommend looking on math papa and typing in the question. Im sorry, but heres the answer.

6 0

3 years ago

Read 2 more answers