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2 years ago

Please help me the formula A=1/2 X bX h

Mathematics

1 answer:

grin007 [14]2 years ago

4 0

Answer:

−4 cot ( −45 )

Step-by-step explanation:

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9. Beth has 28 math problems for homework. She has 4 times as many problems as her sister, Mary. Which equation shows how many p

Lemur [1.5K]

Answer:

Answer is 28/4 = 7

Step-by-step explanation:

Given

Beth B = 28 problem

B has 4 times more problem than Mery m

Find

Total number of problem Mery m has if Beth has 4 times more problem than Beth

So,

B = 4 x m

m = B/4 = 28/4 = 7

Finally answer (d) is correct which is 28 ÷ 4 = m

3 0

3 years ago

HELP!! What is the exact value of Tangent (pi/12)

Vlad1618 [11]

Answer:

2 - sqrt(3)

Step-by-step explanation:

Split pi/12 into two angles where the values of the six trigonometric functions are known.

tan (pi/4 - pi/6)

Apply the difference of angles identity

$\frac{tan(pi/4) - tan(pi/6)}{1 + tan(pi/4)tan(pi/6)}$

tan(pi/4) = 1 , tan(pi/6) = (sqroot3)/3

Plug in and Simplify

$\frac{1-\frac{\sqrt{3} }{3} }{1+1\frac{\sqrt{3} }{3} }$

$\frac{\frac{3-\sqrt{3} }{3} }{\frac{3+\sqrt{3} }{3} }$

$\frac{3-\sqrt{3} }{3} *\frac{3}{3+\sqrt{3} }$

$\frac{3-\sqrt{3} }{3+\sqrt{3}}$ Need to multiply this by $\frac{3+\sqrt{3} }{3+\sqrt{3} }$

Expand and simplify numerator: $\frac{6}{(3+\sqrt{3} )^{2} }$

Expand and simplify denominator: $\frac{6}{12+6\sqrt{3}}$

Cancel the common factor: $\frac{1}{2+\sqrt{3}}$

6 0

3 years ago

Read 2 more answers

Two-fifths of the students in Anya's fifth grade class are girls. One-eighth of the girls wear glasses. What fraction of Anya's

balandron [24]

I'm pretty sure it would be 1/20

7 0

3 years ago

If P (3,5) and Q is (-2, 13) then what's PQ = ?

Salsk061 [2.6K]

Answer:

(1/2, 9) is the answer

Explanation:

x = 3+(-2)/2

x = 1/2

y = 5+13/2

y = 18/2

y = 9

so the midpoint of PQ is (1/2,9)

7 0

3 years ago

4. Find the measures of the acute angles of a right triangle whose legs are 9 cm and 16 cm long.

Snezhnost [94]

Answer:

Apply tan x=9/16 and tan y=16/9 to get the two angles x and y, and you'll receive the solution.

8 0

2 years ago