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3 years ago

Please help ( 20 points )

Mathematics

2 answers:

ZanzabumX [31]3 years ago

3 0

Answer:

1+pi/2, 5/2, square root of 12-1, 2.25. Let me know if this is correct!

Step-by-step explanation:

nordsb [41]3 years ago

3 0

Answer:

√12 - 1 = 2.464101615

5/2 = 2.5

2.25

1 + 3.14/2 = 2.57

1 + 3.14/2 > 5/2 > √12 - 1 > 2.25

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In a triangle ABC two points D,E are taken on BC so that angle BAD=angle DAE=angleCAE. Determine AE if AB=5,BC=10 angle BAC=90.

lord [1]

Answer:

AE = 7.5

Step-by-step explanation:

Since <BAC = $90^{0}$ , then;

<BAD = <DAE = <CAE = $30^{0}$ (complementary angles)

From ΔABC, applying the Pythagoras theorem to determine the length of side AC;

$/BC/^{2}$ = $/AC/^{2}$ + $/AB/^{2}$

$/10/^{2}$ = $/AC/^{2}$ + $/5/^{2}$

100 = $/AC/^{2}$ + 25

$/AC/^{2}$ = 100 - 25

$/AC/^{2}$ = 75

AC = $\sqrt{75}$

Applying trigonometric function to ΔCAE,

Cos $30^{0}$ = $\frac{AE}{\sqrt{75} }$

AE = $\sqrt{75}$ × Cos $30^{0}$

= 7.5

Therefore, AE = 7.5

4 0

3 years ago

Note one line if symmetry is m and one is I.

Tcecarenko [31]

Symplify 5+2(x-5)

Please solve the equation with steps.

Please help me :(

6 0

3 years ago

What is the answer, and how do I solve that equation in order to get my answer? I really want to get the hang of this.

Mrrafil [7]

Answer:

-x^2+4x+6

Step-by-step explanation:

f(x) = 4x+1

g(x) = x^2 - 5

(f-g) (x) = 4x+1 - ( x^2 - 5)

Distribute the minus sign

= 4x+1 - x^2 +5

Combine like terms

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6 0

3 years ago

I need help is -7+9 = -9+7 true false or open

victus00 [196]

Answer:

false

Step-by-step explanation:

-7+9 = 2

-9+7 = -2

2 does not equal -2

False

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3 years ago

Anyone know this answer Help ASAP

Anton [14]

Answer:

The right answer is A (x=2,y=-1)

6 0

3 years ago