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IrinaK [193]
2 years ago
6

Please helpp I'll give brainiest

Mathematics
2 answers:
amm18122 years ago
6 0

Answer:

q + q + 4

Step-by-step explanation:

q + q +4

Ad libitum [116K]2 years ago
3 0

Answer:

bbc

bbc

ssc

Step-by-step explanation:

hahah

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2642 students speak 3 or more languages

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3 years ago
Find the Value of the letter in the following questions. Give your answers to 3 s.f.
Elis [28]

Answer:

i = 75.7°

h = 48.2°

Step-by-step explanation:

==>To find i, use the sine rule for finding angles: sin(A)/a = sin(B)/b

Where,

a = 7.2cm

sin(A) = i

b = 6.5cm

sin(B) = sin(61) = 0.8746

Thus:

sin(A)/7.2 = 0.8746/6.5

Multiply both sides by 7.2

sin(A) = (0.8746*7.2)/6.5

sin(A) = 0.969 (3 s.f)

A = i° = sin^-1(0.969) = 75.7 (3 s.f)

==>To find h, use the Cosine rule for angles:

Cos(C) = (a²+b²-c²)/2ab

cos(C) = h°, a = 4, b = 4.5, c = 3.5

a² = 16

b² = 20.25

c² = 12.25

cos(C) = (16+20.25-12.25)/(2*4*4.5)

cos(C) = 24/36

cos(C) = 0.667 (3 s.f)

C = h° = cos^-1(0.667) = 48.2° (3 s.f)

4 0
3 years ago
How do you to tell the difference between an ellipse, hyperbola, parabola, or circle if all are in standard form?
NeX [460]

Step-by-step explanation:

General form of a conic section is:

Ax² + Bxy + Cy² + Dx + Ey + F = 0

If B = 0:

Parabola: Either x² or y² term, but not both

Circle: x² and y² have the same coefficient

Ellipse: x² and y² have different positive coefficients

Hyperbola: x² and y² have different signs

Otherwise, look at the discriminant.

If B² − 4AC < 0, then the conic is an ellipse.

If B² − 4AC = 0, then the conic is a parabola.

If B² − 4AC > 0, then the conic is a hyperbola.

6 0
3 years ago
Trigonometry Problem <br><br> Find the length of the missing side.
Alinara [238K]

Answer:

29.187

Step-by-step explanation:

Cos38°= base/hypotenuse

Cos38°= 23/w

w= 23/Cos38°

w= 23/0.788

w= 29.187

Hope it helps :-)

6 0
3 years ago
Samantha deposited $300 in a savings account. The account earns 3.5% interest compounded annually. She makes no more deposits an
kifflom [539]

Answer:

200

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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