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Sati [7]
3 years ago
6

Please help me out..

Mathematics
1 answer:
sdas [7]3 years ago
5 0

Answer:

x=41

y=139

Step-by-step explanation:

x+y = 180  since they form a straight line

y is 3x +16

y = 3x +16

Replace y in the first equation

x+3x +16 = 180

Combine like terms

4x +16 = 180

Subtract 16 from each side

4x+16-16 =180-16

4x =164

Divide each side by 4

4x/4 =164/4

x = 41

y = 3x +16

y = 3*41 +16 = 123+16 =139

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Natalka [10]

Set up a proportional fraction relating RSV and RTU. Before doing that, sort out what RT is equal to;

RT =20 + 28 =48

Now, we can equate SR/SV with RT/TU. This is something we can do because they are similar, and therefore should have equal ratios between sides.

\frac{20}{3x-2} =\frac{48}{7x-3}

Cross multiply them, and solve for x.

20(7x-3)=48(3x-2)\\140x-60=144x-96\\-4x=-36\\x=9

That being said, the little cutout at the top left claims the answer is 8. If you verify my answer, it works out.

6 0
3 years ago
Read 2 more answers
Please help I’ll mark brainlest
densk [106]
Answer: blank 1 = 360
blank 2 = 42

Steps:
Solve for x
87 + 55 + 80 + (x + 96) = 360
222 + (x + 96) = 360
222 + x + 96 = 360
318 + x = 360
x = 42

Check:
87 + 55 + 80 + (x + 96) = 360
87 + 55 + 80 + 42+ 96 = 360
360 = 360 ✅
6 0
3 years ago
PLZ help!!!<br> 30 x 10^-8 in scientific notation<br> Brainliest to 1st correct answer
Ilya [14]

Answer:

1.7881^-6

Step-by-step explanation:

put it in a calculator

5 0
4 years ago
Tom is 3 times as old as Manny. In 4 years the sum of their ages will be 56. How old are Tom and Manny?
sveta [45]

Tom is 39, and Manny is 13.

4 0
4 years ago
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Help me please I beg you
Dmitrij [34]

Answer:

Neither

Step-by-step explanation:

We need to transform one of the equations into its slope-intercept form:

y + 2/5x = 8

Subtract 2/5x from both sides:

y = -2/5x + 8

y = -5/2x - 7

Graphing both lines, they do intersect at point (-7.14, 10.86), but they are not parallel, nor are they perpendicular from each other. By definition, perpendicular lines must appear to be perpendicular (that is, they intersect at a 90° angle).

Looking at the attached graph (where the purple line is y = -2/5x + 8), their lines do not form a 90° angle.

Therefore, the correct answer is neither.

Please mark my answers as the Brainliest, if you find my explanations helpful :)

5 0
3 years ago
Read 2 more answers
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