3 years ago

NEED HELP ASAP PLEASE PLEASE PLEASE

Mathematics

1 answer:

nignag [31]3 years ago

8 0

Answer:

tanθ=1.17

Step-by-step explanation:

please see the attachment below

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What is the area of triangle DEF?

FrozenT [24]

Answer:

$A=2\sqrt{14}\ units^2$

Step-by-step explanation:

we know that

Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.

$A=\sqrt{s(s-a)(s-b)(s-c)}$

where

a, b and c are the length sides of triangle

s is the semi-perimeter of triangle

we have

$a=5\ units,b=6\ units,c=3\ units$

Find the semi-perimeter s

s= $\frac{5+6+3}{2}=7\ units$

Find the area of triangle

$A=\sqrt{7(7-5)(7-6)(7-3)}$

$A=\sqrt{7(2)(1)(4)}$

$A=\sqrt{56}\ units^2$

simplify

$A=2\sqrt{14}\ units^2$

3 0

2 years ago

If n(A) =15 n (B) = 9 n(A∩B) =4 find n(A U B)

Xelga [282]

Answer:

Step-by-step explanation:

n(A) only =15-4=11

n(B) only=9-4=5

n(A n B)=4

n(A U B)=11+5+4=20

5 0

3 years ago

Can someone tell me the answer please?

vovikov84 [41]

6.241 I think that's right

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3 years ago

What is the volume of this cube help pl I need it fast

babunello [35]

Answer:

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

A beehive contains 5 gallons of honey a beekeeper removes 4 gallons one pint and 2 oz how much honey remains in the beehive

sergejj [24]

There are 6 pints 14 ounces left. But with you need in quarts and ounces it would be 3 quarts 14 ounces.

Hope this helps!

3 0

3 years ago

NEED HELP ASAP PLEASE PLEASE PLEASE​

NEED HELP ASAP PLEASE PLEASE PLEASE