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3 years ago

Help with this one too, please.

Mathematics

2 answers:

Dominik [7]3 years ago

6 0

It’s 5 units left, and 7 units up.

(I rechecked and the person before got it correct as well )

OLEGan [10]3 years ago

5 0

5 units left and 7 units up

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I need help with this practice problem It’s from my trig prep guide

Zinaida [17]

We know that π = 180°, therefore:

$2\pi=2(180)=360$

Answer: correct

$\frac{5\pi}{6}=\frac{5(180)}{6}=\frac{900}{6}=150$

Answer: no correct

$\frac{\pi}{6}=\frac{180}{6}=30$

Answer: no correct

$\frac{5\pi}{4}=\frac{5(180)}{4}=\frac{900}{4}=225$

Answer: correct

$\frac{4\pi}{3}=\frac{4(180)}{3}=\frac{720}{3}=240$

Answer: correct

6 0

1 year ago

Please I need help in finding the diameter

Goshia [24]

Answer:

im pretty sure its 152, im sorry if im wrong, i took 180 and subtracted 180 - 16 - 12 and got that soooo

Step-by-step explanation:

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3 years ago

The speed of boat in still water is 15km/hr if needs 4 more his to travel 63 km against the current of a river than it needs to

hram777 [196]

Answer:

$\frac{63}{15 - c} - \frac{63}{15 + c} = 4$

Step-by-step explanation:

The systems of equations are

Let us assume the rate of the current be c

Now actual speed against the current is (15 - c)

And, the actual speed with the current is (15 + c)

Here we applied the time formula i.e. distance by speed

Also the upstream time - downstream time = 4

Now the equations are

$\frac{63}{15 - c} - \frac{63}{15 + c} = 4$

5 0

3 years ago

Which of the following is a true polynomial identity

zhuklara [117]

Answer:

It's a.

Step-by-step explanation:

(a - 2b)^2 + 8ab

= a^2 - 4ab + 4b^2 + 8ab

= a^2 + 4ab + 4b^2.

((a + 2b)^2 = a^2 + 4ab + 4b^2.

6 0

4 years ago

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LAST ONE! Simplify the following expression.

ELEN [110]

Answer:

5+5root3

Step-by-step explanation:

6 0

3 years ago

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