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beks73 [17]
3 years ago
7

A. 28.8 B. 22.5 C. 27.2 D. 26.8

Mathematics
1 answer:
Rashid [163]3 years ago
5 0
X/sin 42 = 43/sin 87

x = (43 * sin 42)/(sin 87)

x = 28.812

Answer: 28.8
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An easy question all wrong or unhelpful or no-work answers will be reported.
miss Akunina [59]
Elimination:

7x - 3y = 20
5x + 3y = 16
(add)
12x = 36
÷ 12
x = 3

(5 × 3) + 3y = 16
15 + 3y = 16
- 15
3y = 1
÷ 3
y = 1/3

Substitution:

5x + 3y = 16
- 3y
5x = 16 - 3y
÷ 5
x = 3.2 - 0.6y

5(3.2 - 0.6y) + 3y = 16
16 - 3y + 3y = 16
16  = 16
- 16
6y = 0
÷ 6
y = 0

Sorry the substitution messed up for some reason, I'll fix it after I've answered the other question

6 0
3 years ago
The measure of RST can be represented by the expression (6x + 12)°.
Valentin [98]

Answer:

The measure of angle RST is 120\°

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

m -----> equation A

m -----> equation B

equate equation A and equation B

(6x+12)\°=78\°+(3x-12)\°

6x-3x=78\°-24\°

3x=54\°

x=18\°

The measure of angle RST is equal to

m

8 0
3 years ago
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Find the area of the shaded region. Round your answer to the nearest TENTH.​
ElenaW [278]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
Solve the inequality
AnnyKZ [126]

x+15\geq9\qquad\text{subtract 15 from both sides}\\\\\boxed{x\geq-6}

7 0
2 years ago
Jack bought 4 bagels for $3.00.How many bagels can he buy for $4.50?
nydimaria [60]

Answer:

He can buy 6 bagels.

Step-by-step explanation:

In order to figure out how much each bagel is, you need to divide $3.00 by 4. This gives you .75 because 3.00/4=75. Each bagel is therefore $0.75. Now, in order to find how many bagels you can buy with $4.50, you have to divide 4.50 by 0.75. The equation is 450/75=6. You can buy 6 bagels with $4.50.

Let me know if you need any more help. Have a nice day. :)

8 0
3 years ago
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