Hey!
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Solution:
= -2.1 + 0.3 + -1.7 + -0.4
= -1.8 + -1.7 + -0.4
= -3.5 + -0.4
= -3.9
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Answer:
a) -3.9
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Hope This Helped! Good Luck!
Answer:
ZB= 39°
Step-by-step explanation:
complementary angles are angles that add up to equal 90
equation: 7x + 23 + 5x + 19 = 90
add like terms: 12x + 42 = 90
subtract 42 from both sides: 12x = 48
divide both sides by 12: x = 4
plug in the value of x to the equation for ZB: 5(4) + 19
simplify: ZB= 39°
n = 2
distribute and simplify left side of equation
50 - 10n - 1 = 29
49 - 10n = 29 ( subtract 49 from both sides )
- 10n = 29 - 49 = - 20
n = 
= 2
Let, the number of students who applied for school = x
Then, it would be: x * 15% = 1800
x * 0.15 = 1800
x = 1800 / 0.15
x = 12,000
In short, Your Answer would be 12,000 students applied for that
Hope this helps!
