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creativ13 [48]
3 years ago
9

Can you help me plz i learning it today

Mathematics
2 answers:
lara31 [8.8K]3 years ago
4 0

Answer:

C. less than or equal to

Step-by-step explanation:

the direction that the sign is facing

Elena L [17]3 years ago
4 0

Answer:

a) less than

Step-by-step explanation:

you read the equation left to right. the smaller side/connected part is what you say ( < less than. > greater than)

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1) Choose from the options an equivalent ratio that would be appropriate
vlada-n [284]

Answer:

the equivalent ratios of 6 and 5 is D.

6 0
2 years ago
Solve using elimination.<br><br> 8x − 7y = –5<br> –x + 4y = –15
xz_007 [3.2K]
Steps
8x−7y=−5
Add 7y to both sides
8x−7y+7y=−5+7y
Simplify
8x=−5+7y
Divide both sides by 8
8x
8 =−
5
8 +
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8
Simplify
x=
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7 0
2 years ago
Read 2 more answers
The vertices of a square CDEF are C(1,1), D(3,1), E(3,-1) and F(1,-1). What formulas prove that the diagonals are congruent perp
Oxana [17]

To prove that the diagonals are congruent, you need to formula to compute the distance between two points:

d(A,B) = \sqrt{(A_x-B_x)^2 + (A_y-B_y)^2}

Using that formula, you may prove that d(C,E) = d(D,F), which means that the two diagonals have the same length.

To prove that they are perpendicular, you need the formula to compute the slope of a segment. The slope, knowing the enpoints, is given by

m = \cfrac{\Delta y}{\Delta x} = \cfrac{A_y-B_y}{A_x-B_x}

You can use this formula to prove that

m_{CE} = -\cfrac{1}{m_{DF}}

In fact, if one slope is the opposite of the reciprocal of the other, the two segments are perpendicular.

Finally, to prove that they bisect each other, you first need to find the point where they meet. First of all, you need to find the line the segments lie on: the formula is

y-y_0 = m(x-x_0)

where (x_0,y_0) is one of the points belonging to the line, and you already know how to find the slope. Then, you find the point of intersection, say A, by solving the system involving the two lines:

\begin{cases} y= m_{CE}x+q_{CE}\\ y = m_{DF}x+q_{DF} \end{cases}

And use again the formula for the distance between two points to prove that

d(A,C) = d(A,D) = d(A,E) = d(A,F)

4 0
3 years ago
Solve y = x2 - 18 for x.<br> (Apex)
erik [133]

Answer:

y = 18 or 36

Step-by-step explanation:

4 0
3 years ago
5<br> 1<br> The measure of Z1 =<br> O 55<br> O62.5<br> 110<br> 5
Akimi4 [234]

Answer: 55

Step-by-step explanation:

Congruent angles intercept congruent chords, so since the circumference of a circle is 360 degrees, the arc angle 1 is inscribed in measures 110 degrees.

So, by the inscribed angle theorem, angle 1 measures 55 degrees.

5 0
2 years ago
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