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MArishka [77]
3 years ago
15

Please help What is the value of the expression 18 + (6 - 3) 32 - 9?

Mathematics
1 answer:
SashulF [63]3 years ago
5 0

Answer:

18+ (6-3) 32- 9= 105

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In ΔXYZ, ∠X=82° and ∠Y=84°. ∠XWZ=90° and XY=97. Find the length of XW to the nearest integer.
ivanzaharov [21]

Check the picture below to the left, let's use those sides with the law of sines

\textit{Law of sines} \\\\ \cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{sin(14^o)}{97}=\cfrac{sin(84^o)}{XZ}\implies XZ = \cfrac{97\cdot sin(84^o)}{sin(14^o)}\implies XZ \approx 398.76 \\\\\\ \stackrel{\textit{now using SOH CAH TOA}}{cos(82^o) = \cfrac{XW}{XZ}}\implies XZcos(82^o)=XW \\\\\\ 398.76cos(82^o)\approx XW\implies 55.497\approx XW\implies \stackrel{\textit{rounded up}}{55=XW}

7 0
3 years ago
Please fill in the blanks on the math problems.
Scrat [10]

Answer:

13) a and b,  b and c

14) a = 59°, b = 121°, c = 59°

15) a = 45°, b = 135°, c = 135°

16) a = 72°, b = 108°, c = 108°

3 0
3 years ago
First, solve 3/4 × 4 using repeated addition. Then, solve 4 × 3/4 using multiplication and division. Hint: The answer should be
Ludmilka [50]

Step-by-step explanation:

Repeated Addition:

3/4 +3/4 +3/4 +3/4 = 12/4 = 3

The denomenator will stay the same (4). So all you need to do is add the numerator (top. number in the fracton, 3)

It is the same logic as a basic multiplication problem using reapeted additon

(see example below:)

10 * 5 = 50

10 +10 +10 +10 +10 = 50

Multiplication:

4 * 3/4 = 12/4 = 3

You should not multiply the denomerator. You should only multiply the numerator. So you multiply 4 times 3 and get 12. So, you should get 12/4.

I apologize for my bad spelling.

5 0
3 years ago
In the regular decagon shown, what is the measure of angle 1?
Vadim26 [7]
Polygons 10 sides,  interior angle = <span>144°
m<1 = 180 - 144 = 36

answer
36</span>
8 0
3 years ago
Read 2 more answers
Both numbers too 54.698 rounded too the nearest hundreth
insens350 [35]

Answer:

54.700 or 54.7

Step-by-step explanation:

Hope this helped

8 0
3 years ago
Read 2 more answers
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