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defon
3 years ago
10

Find angel v (use pic)

Mathematics
1 answer:
Setler [38]3 years ago
3 0

Answer: 63 degrees.

Step-by-step explanation:

7x + 4 +5x+3+2x+5=180 degrees

14x+12=180 -12 Degrees

14x / 14 = .  168 /14

x=12

5(12) +3

63

   

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4x - Зу = -3<br> 4x + y = 17<br> Explain how as well
Jobisdone [24]

Step-by-step explanation:

I will solve your system by substitution.

(You can also solve this system by elimination.)

4x+y=17;4x−3y=−3

Step: Solve4x+y=17for y:

4x+y+−4x=17+−4x(Add -4x to both sides)

y=−4x+17

Step: Substitute−4x+17foryin4x−3y=−3:

4x−3y=−3

4x−3(−4x+17)=−3

16x−51=−3(Simplify both sides of the equation)

16x−51+51=−3+51(Add 51 to both sides)

16x=48

16/x = 48/16

(Divide both sides by 16)

x=3

Step: Substitute 3 for x in y=−4x+17:

y=−4x+17

y=(−4)(3)+17

y=5(Simplify both sides of the equation)

Answer:

x=3 and y=5

6 0
3 years ago
Joan waters her plants each day with gallons of water. With a new irrigation system in place, she uses gallons of water each day
vampirchik [111]

Answer:

172\frac{1}{2} gallons

Step-by-step explanation:

Considering she waters her plants with 25 1/2 gallons  i.e 51/2

and with the new system, she does it with 19 3/4 i.e 79/4

taking the difference:

\frac{51}{2} - \frac{70}{4} = \frac{23}{4} gallons per day

For 30 days:

30 x \frac{23}{4} = 172.5 or 172\frac{1}{2} gallons

8 0
3 years ago
Find the area of this circle. Use 3.14 to approximate Pi
bekas [8.4K]

\pi {r}^{2} \\  \:  \:  \:  \:  \:  \:  = 3.14 \times 13 {cm}^{2}  \\  = 530.66 {cm}^{2}

6 0
2 years ago
13) Ayla's lunch bill was $8.70 and Harley's was $10.30. The girls' uncle paid
Otrada [13]

Answer:

$2.85

Step-by-step explanation:

First, add the bill up ($8.70 + $10.30 = 19). So now you need to find what 15% of $19 is...To find the percentage of something you need to turn it into a decimal, 0. (whatever the percentage number is). So in this case, 19 times 0.15, which is a tip of $2.85.

5 0
2 years ago
Read 2 more answers
Is 9.78 a rational or irrational number
Lorico [155]
It is a rational number
5 0
3 years ago
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