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ruslelena [56]
3 years ago
5

write an equation to solve for x your only writing the equation. 7x+9 5×+3 there's three answers the bottom one is if none of th

e other two are right I thought the answer was number two but the person that answered it gave me a different number so somebody can help me I would mark this brainest did you see the third option is blank I came up with the answer number two is that correct or is it the 7x + 9 + 5x + 3 equals 180 brainest awared​

Mathematics
1 answer:
professor190 [17]3 years ago
3 0

Answer:

<h2>7x + 9 + 5x + 3 = 180</h2>

Step-by-step explanation:

its a supplementary angles:

so the equation is add the two equation equals to 180

7x + 9 + 5x + 3 = 180

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Please help! A-level maths.
astra-53 [7]

x+y=k\implies y=k-x

Substitute this into the parabolic equation,

k-x=6-(x-3)^2\implies x^2-7x+(k+3)=0

We're told the line x+y=k intersects C twice, which means the quadratic above has two distinct real solutions. Its discriminant must then be positive, so we know

(-7)^2-4(k+3)=49-4(k+3)>0\implies k

We can tell from the quadratic equation that C has its vertex at the point (3, 6). Also, note that

-1\le\sin t\le1\implies3\le3+2\sin t\le5\implies3\le x\le5

and

-1\le\cos2t\le1\implies2\le4+2\cos2t\le6\implies2\le y\le6

so the furthest to the right that C extends is the point (5, 2). The line x+y=k passes through this point for 2+5=k\implies k=7. For any value of k, the line x+y=k passes through C either only once, or not at all.

So 7\le k; in set notation,

\{k\mid 7\le k

4 0
3 years ago
3g+5h+4g-2h please help :(
AveGali [126]

Answer:

7g+3h

Step-by-step explanation:

you combine like terms by adding 3g and 4g and subtracting 2h from 5h.

4 0
3 years ago
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Solve for v 17 - 2v = -53solve for v 17-2v=-53
lapo4ka [179]

Hey!

------------------------------------------------

Steps To Solve:

17 - 2v = -53

~Subtract 17 to both sides

17 - 2v - 17 = -53 - 17

~Simplify

-2v = -70

~Divide 2 to both sides

-2v/-2 = -70/-2

~Simplify

v = 35

------------------------------------------------

Hence, the answer is \Large\boxed{\mathsf{v~=~35}}

------------------------------------------------

Hope This Helped! Good Luck!

7 0
3 years ago
Which sequence explains a geometric method of determining<br> 3 - 17i/2 +2i?
never [62]

Answer:

That would be D.

Step-by-step explanation:

first, turn both to polar form. Then you plot the first one and scale by the second. also, using a Rectangular to Polar calculator, we can see that 2.82 is 2 sqrt 2, so it cannot be A or B. It also can't be C since you graph 3-17i first.

7 0
2 years ago
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-5x + 10 &gt; -15 can someone solve this?
MakcuM [25]

Answer:

x<5

Step-by-step explanation:

5 0
3 years ago
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