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strojnjashka [21]
3 years ago
11

Evaluate the expression shown for x = 9. -5/6 x +7

Mathematics
2 answers:
d1i1m1o1n [39]3 years ago
8 0

Answer:

-\frac{1}{2}

Step-by-step explanation:

Here, the given expression,

-\frac{5}{6}x+7

Put x = 9 in this expression,

=-\frac{5}{6}(9) + 7

=-\frac{5(9)}{6} + 7    \because \frac{a}{b}\times c=\frac{ac}{b}

=-\frac{45}{6}+7

=\frac{-45+42}{6}  ( adding fractions )

=\frac{-3}{6}

=-\frac{1}{2}

Semenov [28]3 years ago
3 0
Substitute 9 for x in <span> -5/6 x +7
(-5/6) (9) + 7
Now solve
</span>(-5/6) (9) + 7
-7.5 + 7 = -0.5

Your answer is -0.5 or -1/2
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6x+1=4x+19 ...........
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Find the value of m angle 3-m&lt;1
emmainna [20.7K]

Answer:

The value of m\angle 3-m\angle 1 = 50^{\circ}

Step-by-step explanation:

Vertical Angle theorem: It is about the angles that are opposite to each other.

Also, vertical angle are congruent that means vertical angles are equal.

In the given figure; m\angle 3 and 70^{\circ} are vertical angle

then, by vertical angle theorem,  m\angle3 =70^{\circ}.

Supplementary angle: the sum of the angles whose measure on the straight line is 180 degree.

From the figure, 70^{\circ} , \angle 1 and m\angle 2 =90^{\circ} forms a straight line.

then, by the definition of Supplementary angle;

70^{\circ}+m\angle 1 +m\angle 2=180^{\circ}

Substituting the value of  m\angle 2 =90^{\circ} in above equation:

70^{\circ}+m\angle 1 + 90^{\circ} =180^{\circ} or

160^{\circ}+m\angle 1=180^{\circ}

Simplify:

m\angle 1=180^{\circ}-160^{\circ} =20^{\circ}

therefore,  m\angle 1= 20^{\circ} and m\angle 3=70^{\circ},

the value of m\angle3-m\angle1= 70^{\circ}-20^{\circ} =50^{\circ}.






7 0
3 years ago
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