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Triss [41]
3 years ago
10

What is the value of the expression (18-3)•2 ²+15?

Mathematics
2 answers:
algol [13]3 years ago
7 0

Answer:

75 I Believe

Step-by-step explanation:


TEA [102]3 years ago
6 0
The answer is 75 I believe
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Consider ΔABC, where ∠C = 90° and ∠A + ∠B = 90°. Click on the statements that are true about the relationships of the angles Ang
Novay_Z [31]

Answer: Angles A and B are complementary angles

If Sin A ≈ 0.766 then Cos B ≈ 0.766.

If Cos B ≈ 0.766 then Sin A ≈ 0.766

Step-by-step explanation: In any given right angled triangle, one angle measures 90 degrees while the addition of the other two angles equals to 90 degrees. Hence if angle C is given as 90 degrees, then angles A and B added together equals 90 degrees (complementary angles equal 90 degrees).

Also, Sin A cannot be the same value as Sin B, since angle A and angle B are not equal in measurement. However, being complementary, the Sin of angle A equals the Cos of angle B.

If Sin A ≈ 0.766, then angle A ≈ 50 degrees

That makes angle B equal to 40 degrees. The Cos of B ≈ 0.766

Therefore if Sin A ≈ 0.766, then Cos B ≈ 0.766

If Cos B ≈ 0.766 then Sin A ≈ 0.766 are both correct

6 0
3 years ago
Answer these 2 questions for 100 pts. answers only please​
aliya0001 [1]

Answer:

1.

%K = 31.904%

%Cl = 28.930%

%O = 39.166%

2.

Hg = 80.69/ 200.59 = 0.40/0.2 = 2

S = 6.436/ 32.07 = 0.20/0.2 = 1

O = 12.87/ 16.00 = 0.80/0.2 = 4

Hg2SO4 is the empirical formula

Step-by-step explanation:

8 0
3 years ago
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The soccer team played 7 games and scored the following number goals in each game: 2, 1, 3, 5, 3, 1, 4. What was the median numb
soldi70 [24.7K]
Hey there!

Median number :-

Given numbers are

2,1,3,5,3,1,4


Arranging in ascending order,

1,1,2,3,3,4,5

Median = 3


Hope this helps :)
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2 years ago
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The diagram shows a square-based cuboid.
san4es73 [151]

Answer:

wgxvbdx

Step-by-step explanation:

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7 0
2 years ago
WILL GIVE BRAINLIEST
Anna11 [10]

Answer:

Sarah is paid $20 an hour at her new job. She wishes to graph her total pay y, as a function of the number of hours, x. She wants to be sure her graph shows her pay for 10 and 20 hours of work.

a. What is a good scale to use for the x-axis? Explain your reasoning.

b. What is a good interval to use for the y-axis? Explain your r

Step-by-step explanation:

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