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4 years ago

Which is the solution to the inequality?

Mathematics

2 answers:

Tanzania [10]4 years ago

8 0

Answer:

y < -12

Step-by-step explanation:

Subtract 12 from both sides:

y + 15 - 15 < 3 - 15

Simplify:

y < -12

lord [1]4 years ago

6 0

I think the answer is y<-12 :))

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Solve for x. 7 x = 4 x + 27 x =

rosijanka [135]

Answer:

x=9

Step-by-step explanation:

7x = 4x + 27

subtract 4x on both sides

3x=27

divide 3 on both sides

x=9

plug in

7(9)=63

4(9)+27=63

63=63

6 0

3 years ago

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Y = 2x + 1 y = -2x + 1 y = -2x - 0.5 y = 2x - 0.5

Eddi Din [679]

have you seen how he answers questions? doesn't deserve to have people answer his

Step-by-step explanation:

7 0

3 years ago

PLS HELP THANK UUU!!!

Svetach [21]

Answer:

47.45754235

31.46697634

Hey do you need to show your work for these? I found an answer key

Step-by-step explanation:

We need to use law of cosines

c²=a²+b²-2abcos(C)

let x= angle xzy

plugging in what we have the equation looks like

17²=22²+20²-2*22*20*cos(x)

289=484+400-880cos(x)

.676136364=cos(x)

x=47.45754235

b.)

The smallest angle should be opposite to the smallest side

Using the law of cosines again we get

9²=13²+17²-2*13*17*cos(x)

81=458-442cos(x)

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x=31.46697634

6 0

3 years ago

The sum of three consecutive integers is 36. Find the largest integer.

cestrela7 [59]

Answer:

Step-by-step explanation:

(n-2) +(n-1) +n =3n-3=36

n=(36+3)/3=13

Consecutive integers are 11,12 and 13

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4 years ago

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Prove that the number A= [tex]20^{8^{2014} } }+113 is composite

Drupady [299]

Cheese proof:

We can just prove that it is divisible by 3, which means that it is composite. We can use modular exponentiation, where if $a \equiv b \pmod{n}$ then $a^x \equiv b^x \pmod{n}$ . In this case, ${-1}^{8^{2014}} \equiv 20^{8^{2014}} \pmod{3}$ . This is much easier to calculate! Since $8^{2014}$ is even, $-1^{8^{2014}}=1$ , meaning that now we only need to prove that $0\equiv(1+113) \pmod{3}$ , which is obviously true.

8 0

2 years ago