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anzhelika [568]
3 years ago
14

∠A and ∠B are complementary angles.

Mathematics
1 answer:
iogann1982 [59]3 years ago
3 0
Cos 52 = 0.6157

sin 42 = cos 48 = 2/3     (because 42 + 38 = 90 - complementary angles)

if tan 20,5 = 3/8 then  tan 69.5 wil =  1 / 3/8  = 8/3

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Use the distributive property to simplify 1/6 × (36+1/2)
kicyunya [14]
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3 years ago
Find the surface area of a rectangular figure
Ann [662]

Answer:

360ft^2

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4 0
3 years ago
Explain the difference between |-3| and -3?
Ivan
They are opposites. since |-3| has the lines around it, this represents absolute value, which is not positive or negative but how far away the value is from 0. the plain -3 remains the same. |-3| is 3, because it is 3 units away from 0 on the number line.
5 0
3 years ago
Read 2 more answers
Expand this expression: 0.3(9x + 2)<br> Plz help
Vikentia [17]

Step-by-step explanation:

0.3(9x + 2) [Then we multiply to expand]

= 2.7x + 0.6 (Ans)

4 0
3 years ago
PLEASE ANSWER ASAP WORTH 100 points get it right please
Trava [24]

Answer:

See below.

Step-by-step explanation:

Part A:

triangle QPR and triangle PSR are similar

Part B:

Triangle QPR is a right triangle with right angle QPR.

Triangle SPR is a right triangle with right angle PSR.

Angle QPR of triangle QPR corresponds to and is congruent to angle PSR of triangle PSR.

Angle R of triangle QSR corresponds to and is congruent to angle R of triangle PSR.

The similar triangles by AA Similarity are

triangle QPR and triangle PSR

Part C:

QR/PR = PR/SR

16/PR = PR/4

PR² = 16 * 4

PR² = 64

PR = 8

8 0
2 years ago
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