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zmey [24]
4 years ago
11

Need help with 9 and 12(theirs a picture)

Mathematics
1 answer:
Doss [256]4 years ago
8 0

Number 6 is incorrect. Remember when you see -(-1) that is addition because you are subtracting a negative from a negative so you take the negative sign away and you have a positive. The correct answer to 6 is -75. For number 9 the first thing that you are gonna do is distribute that negative sign to the -12 in parentheses. This will make it a positive 12 which leaves you with

-8+12-31=-27

Next for number 12 you will distribute the - sign onto the -9 in parentheses and the -16 in parentheses. This will leave you with -16+9+16=9

Hope that this helped!

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Which is the best approximation for the measure of angle ABC?
ankoles [38]
We can find the approximate measurement of angle ABC  and it is equal to 180°. The summation of all angles in a triangle is 180°.
Solving for x or angle B, we need to used Pythagorean theorem and SOH CAH TOA.
Solving for angle A:
sinA = 10.5/20
A = 31.67°

Solving for angle B:
180° = ∠C + ∠B + ∠A
180° = 90° + ∠B + 31.67
∠B = 58.33°

The x value is 58.33°.
3 0
3 years ago
Lin sold 4 more shirts than Greg. Fran sold 3 times as many shirts as Lin. In total, the three sold 51 shirts. Which represents
shutvik [7]
L + F + G = 51
F = 3L...F = 3(G + 4)....F = 3G + 12
L = G + 4

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5G = 51 - 16
5G = 35
G = 35/5
G = 7 <=== Greg sold 7

L = G + 4...L = 7 + 4....L = 11 <== Lin sold 11
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7 0
3 years ago
Which algebraic expression is a polynomial with a degree of 5?
Simora [160]
First one ..............
8 0
3 years ago
8. When someone buys a ticket for an airline flight, there is a 0.0995 probability that the person will not show up for the flig
Neporo4naja [7]

Answer:

0.2952

Step-by-step explanation:

Not enough seats will be available if 23 or 24 people show up.

Required probability = 24C24(0.9005)24 + 24C23(0.9005)23*0.0995 = 0.2952

3 0
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Write a word problem for (12X2) + (4X3)
ivanzaharov [21]

Answer:

My friend David bought 2, $12 pairs of jeans and 4, $3 bracelets. How much did David spend in total?

Step-by-step explanation:

Since, David is buying 2, $12 items and 4, $3 items and since were finding the total, we want to multiply (12×2) + (4×3)!

Hope this Helps! :)

<em>Have any questions? Ask below in the comments and I will try my best to answer.</em>

-SGO

6 0
3 years ago
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