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dexar [7]
3 years ago
9

1. x² + 2xy – 7 xy + 4y?Input your answer here:​

Mathematics
1 answer:
viktelen [127]3 years ago
6 0

collect the like terms:

Solution: x^2-5xy+4y

P.S

get the photo math app. :)

Hope that helps.

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In ΔWXY, x = 680 inches, w = 900 inches and ∠W=157°. Find all possible values of ∠X, to the nearest degree.
ikadub [295]

Given:

In ΔWXY, x = 680 inches, w = 900 inches and ∠W=157°.

To find:

The all possible values of ∠X, to the nearest degree.

Solution:

Law of Sines:

\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}

For ΔWXY,

\dfrac{w}{\sin W}=\dfrac{x}{\sin X}=\dfrac{y}{\sin Y}

Now,

\dfrac{w}{\sin W}=\dfrac{x}{\sin X}

\dfrac{900}{\sin (157^\circ)}=\dfrac{680}{\sin X}

900\sin X=680\sin (157^\circ)

\sin X=\dfrac{680}{900}\sin (157^\circ)

\sin X=0.295219

X=\sin^{-1}(0.295219)

X=17.17067

X\approx 17

Therefore, the value of ∠X is 17 degrees.

5 0
3 years ago
3n-5=-48-40n. Please help . I need the steps to solve and the answer
liraira [26]

3n-5=-48-40n

Move -40n to the other side. Sign changes from -40n to +40n.

3n+40n-5=-48= -48-40n+40n

3n+40n-5=-48

Move -5 to the other side.

3n+40n-5+5=-48+5

3n+40n=-43

43n=-43

Divide by 43 for both sides

43n/43=-43/43

n=-1

Answer: n=-1

5 0
3 years ago
Read 2 more answers
Help please I will give you the brainliest
luda_lava [24]

Answer:

The area of a triangle is defined as the total region that is enclosed by the three sides of any particular triangle. Basically, it is equal to half of the base times height, i.e. A = 1/2 × b × h.

Step-by-step explanation:

6 0
3 years ago
Can some one help me. I don’t understand
vovikov84 [41]
BC = √[(8-1)^2 +(1-6)^2]
BC = √(49+25
BC = √74
BC = 8.6

answer
8.6 units
4 0
3 years ago
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Hey guys iv got one 3 tons to pounds thanks so much.
Art [367]

Answer:

3 tons = 6000 pounds

Step-by-step explanation:

1 ton is equal to 2000 pounds, so just multiply 2000 by 3 :)

Hope this helps!

5 0
2 years ago
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