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Darya [45]
4 years ago
13

Please helppp I suckk at fractions!!!

Mathematics
1 answer:
wel4 years ago
7 0

Answer: a=2 b= 11/6 or 1  5/6

Step-by-step explanation:

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Anyone please help me
wolverine [178]

Answer:

3

Step-by-step explanation:

these are 2 similar triangles (all 3 pairs of corresponding angles are equal in their pair, and the lengths of corresponding sides have the same ratio in every pair of corresponding sides and other lengths).

and they are also right-angled triangles.

so, what else do we know about them ?

PQ = 18

RT = 6

ST = QT + 9

therefore

QT = ST - 9

and

QR = QT + RT = ST - 9 + 6 = ST - 3

due to the principles of cumulative triangles

PQ/ST = QR/RT = 18/ST = (ST - 3)/6

108/ST = (ST - 3)

108 = (ST - 3)ST = ST² - 3ST

ST² - 3ST - 108 = 0

we can the write

x² - 3x - 108 = 0

and the solution for such a squared equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 1

b = -3

c = -108

x = (3 ± sqrt(9 - 4×1×-108))/2 = (3 ± sqrt(441))/2 =

= (3 ± 21)/2

x1 = (3+21)/2 = 24/2 = 12

x2 = (3-21)/2 = -18/2 = -9

a negative solution for real lengths is not valid, so we know

x = ST = 12

so,

QR = ST - 3 = 12 - 3 = 9

and then

QT = QR - RT = 9 - 6 = 3

7 0
2 years ago
PLEASE HELP ASPPPP!!!
leva [86]
<h2>Answer:</h2>

B. {10, 20, 30, 40, 50, 60, 70}

<h2>Explanation:</h2>

  • The domain of a function is defined as the set of all input values. Or in other words the set of all first element of ordered pairs.

In the given input-output table, the set of all input values will be the domain of the given function.

3 0
3 years ago
Rate of change and unit rate basically<br> mean the same thing.<br><br> false or True?
enot [183]

Answer: yes they are the same

5 0
3 years ago
Find the inverse function in slope-intercept form (mx+b):<br> f(x)=-x+12
Ostrovityanka [42]

Answer:

12 - x

Step-by-step explanation:

y = -x + 12

Replace x with y.

x = -y + 12

Solve for y, x = -y + 12

= 12 - x

Hope this helps, please mark brainliest if possible. :)

6 0
3 years ago
Solve for x. Please help!!!
Levart [38]
I don’t see a picture so please put a picture :D
7 0
3 years ago
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