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ELEN [110]
3 years ago
7

Solve for x: 2x squared-1=-9

Mathematics
1 answer:
Troyanec [42]3 years ago
3 0

Answer:

x=-2

Step-by-step explanation:

-9+1=-8 so 2x squared =-8

x=-2

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The sketch shows two parallel lines cut by a transversal. Angle 1 is 58°. What is the measure of angle 7?
hodyreva [135]
The complete question in the attached figure

we have that
m∠1=<span>58°
</span>m∠7=?
 we know that
m∠1+m∠3=180°------------> supplementary angles
and 
m∠3=m∠7--------------------> corresponding angles
then
m∠3=180°-m∠1-----------> m∠3=180°-58°=122°

m∠7=m∠3=122°

the answer is m∠7=122°


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Equation.<br> 1. h - 9= 2h - 1
lora16 [44]
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which graph represents a hyperbola centered at the origin, with a transverse axis of length 6 and a focus at (square root 14,0)
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Is the second graph :)in edg2020

Step-by-step explanation:

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3 years ago
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svetoff [14.1K]
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Find the equation of the straight line passing through the points (-1,3) and (1,9).
Lena [83]

Answer:

The equation of the straight line is y=3x+6

Step-by-step explanation:

Any straight line passing through points (a_1,b_1) and  (a_2,b_2)  is given by:

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In the given question

m=\frac{9-3}{1-(-1)} =3

Substituting the values we get:

<h2><u></u>y-3=3(x+1)\\y-3=3x+3\\y=3x+6</h2>

Reference: https://www.cuemath.com/geometry/equation-of-a-straight-line/

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2 years ago
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