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4 years ago

Evaluate the expression 5t + 2m for m = 7 and t = 2.

Mathematics

1 answer:

pantera1 [17]4 years ago

5 0

Answer:

<h3>The answer is 24</h3>

Step-by-step explanation:

5t + 2m

m = 7 t = 2

Substitute the above values into the expression

That's

5(2) + 2(7)

10 + 14

Hope this helps you

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OLEGan [10]

Answer:

25) cos X = 12/37 cos X = 0.3243 X = 71.08 degrees

26) tan C = 32/24 tan C = 1.3333 C = 53.13 degrees

27) sin Z = 15/25 sin Z = 0.6 Z = 36.87 degrees

28) sin A = 32/40 sin A = 0.8 A = 53.13 degrees

29) sin Z = 40/50 sin Z = 0.8 Z = 53.13 degrees

7 0

3 years ago

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Solve triangle ABC. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers

OleMash [197]

Answer:

∠A1 = 27.4°, ∠A2 = 56.6°, ∠C1 =104.6°, ∠C2=75.4°, a1 = 79.9 and a2 = 144.9

Step-by-step explanation:

From Sine rule

$\frac{a}{sinA}=\frac{b}{sinB} = \frac{c}{sinC}$

∴ b / sinB = c / sinC

From the question,

b = 129, c = 168 and ∠B = 48°

∴ 129 / sin48° = 168 / sinC

Then, sinC = (168×sin48)/129

sinC = 0.9678

C = sin⁻¹(0.9678)

C = 75.42

∠C2=75.4°

and

∴∠C1 = 180° - 75.4°

∠C1 =104.6°

For ∠A

∠A1 = 180° - (104.6°+48°) [sum of angles in a triangle]

∠A1 = 27.4°

and

∠A2 = 180° - (75.4° + 48°)

∠A2 = 180° - (123.4°)

∠A2 = 56.6°

For side a

a1/sinA1 = b/sinB

a1/ sin27.4° = 129/sin48

a1 = (129×sin27.4°)/sin48

a1 = 79.8845

a1 = 79.9

and

a2/sinA2 = b / sinB

a2/ sin56.6° = 129/sin48

a2 = (129×sin56.6°)/sin48

a2 = 144.9184

a2 = 144.9

Hence,

∠A1 = 27.4°, ∠A2 = 56.6°, ∠C1 =104.6°, ∠C2=75.4°, a1 = 79.9 and a2 = 144.9

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3 years ago

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german

The two correct answers are A and E. You can immediately eliminate C and E because to bring over something that is multiplied you have to divide (fraction). And B isn't the answer because to isolate s you divide by πr which would bring πr to the denominator, not the numerator.
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3 years ago

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Nimfa-mama [501]

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$\bold{\huge{\blue{\underline{ Solution }}}}$