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3 years ago

Which shape has 4 square

Mathematics

2 answers:

maks197457 [2]3 years ago

5 0

Answer:

ummmm a triangle?

Step-by-step explanation:

LIke i dont know, kinda reminds me of my x never knew how to- never mind. Like just put traingle or whatever

zheka24 [161]3 years ago

4 0

Answer:

it is indeed the square

Step-by-step explanation:

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Convert the fraction to a mixed number.<br> 11/2=a b/2

g100num [7]

Answer:

5 1/2.

Step-by-step explanation:

11 divided by 2 is 5 with a remainder of 1.

So the mixed number is 5 1/2.

3 0

3 years ago

Read 2 more answers

3÷1/7 in fraction form

evablogger [386]

I think it is 22/7? In fraction form.

6 0

3 years ago

From a ship, the angle of elevation of a point, A, at the top of a cliff is 21°. After the ship has sailed 2,500 feet directly t

fredd [130]

Answer:

10701.97 feet.

Step-by-step explanation:

Refer the attached figure

The angle of elevation of a point, A, at the top of a cliff is 21° i.e. ∠ACB = 21°

The ship has sailed 2,500 feet directly toward the foot of the cliff i.e. CD = 2500 feet.

Then the angle of elevation becomes 47° i.e.∠ADB = 47°

Let BD be x

So, BC = BD+DC=x+2500

Let the height of the cliff be h feet.

In ΔABD

We will use trigonometric ratios

$tan\theta = \frac{Perpendicular}{Base}$

$tan47^{\circ} = \frac{AB}{BD}$

$1.072= \frac{h}{x}$

$1.072x=h$ ---a

In ΔABC

We will use trigonometric ratios

$tan\theta = \frac{Perpendicular}{Base}$

$tan21^{\circ} = \frac{AB}{BC}$

$0.869 = \frac{h}{x+2500}$

$0.869(x+2500) =h$

$0.869x+2172.5 =h$ -----b

Equate a and b

$0.869x+2172.5 =1.072x$

$2172.5 =1.072x-0.869x$

$2172.5 =0.203x$

$\frac{2172.5}{0.203}=x$

$10701.97=x$

Thus the height of the cliff is 10701.97 feet.

4 0

3 years ago

They are separate questions.

NNADVOKAT [17]

Answer: S+2,

a+b,

c-(a+b),

z+12,

t- (s+5) ,

(15+d) -c

Step-by-step explanation:

4 0

3 years ago

How do you solve: f(x) = -x2e-x<br> +2xe-x , finding the zero's of f.

Maksim231197 [3]

Answer:

0 and 2

Step-by-step explanation:

$f(x) = -x^2e^{-x}+2xe^{-x}$

To find zeros set f(x)=0 and solve for x

$0 = -x^2e^{-x}+2xe^{-x}$

$0 = -e^{-x}(x^2-2x)$

now factor out x

$0 = -xe^{-x}(x-2)$

set each factor =0 and solve for x

$x=0$

$-e^{-x}=0$ no solution for x

$x-2=0, x=2$

zeros of f are 0 and 2

7 0

4 years ago