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kow [346]
4 years ago
10

Please help me! thanks :)

Mathematics
2 answers:
Lilit [14]4 years ago
8 0
M<STR = 180 - 8x  degrees
also m < SRT = 180-8x ( because side RS = side ST, so isosceles triangle)
So 
7x - 54 + 180 - 8x = 8x  (ext. angle of triangle =sum of opposite internal angles)

7x - 8x - 8x = -180 + 54 = -126
-9x = -126
x = 14 answer
inna [77]4 years ago
4 0
The sum of the measures of the angles of a triangle is 180 degrees.

Angles STU and STR are supplementary angles.
Angles R and STR are congruent.

m<STU + m<STR = 180

8x + m<STR = 180

m<STR = 180 - 8x

m<R = m<STR = 180 - 8x

m<RST + m<R + m<STR = 180

7x - 54 + 180 - 8x + 180 - 8x = 180

-9x + 360 = 180

-9x = -126

x = 14
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Answer: Last Option

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Step-by-step explanation:

The initial height of the plant of species A is 25 cm and grows 3 centimeters per month.

If m represents the number of months elapsed then the equation for the height of the plant of species A is:

H (m) = 25 + 3m

For species B the initial height is 10 cm and it grows 8 cm each month

If m represents the number of months elapsed then the equation for the height of the plant of species B is:

H (m) = 10 + 8m

Finally, the system of equations is:

H (m) = 25 + 3m\\H (m) = 10 + 8m

The answer is the last option

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3 years ago
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ElenaW [278]

Answer:

44.2%

Step-by-step explanation:

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the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

the hundredth figure is 8, which is greater than 5. 1 would be added to the tenth figure.

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3 years ago
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tresset_1 [31]
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Simple Interest, I = P*r*t
              
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Luda [366]
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Step-by-step explanation:

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