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Novay_Z [31]
2 years ago
12

HALP HALP HALP HALP HALP

Mathematics
1 answer:
Nataliya [291]2 years ago
7 0

Answer:

the answer is option (d)

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Which ratio forms a proportion with 16/20 ?
zvonat [6]
D. 4/5 since
16 \div 4 = 4
20 \div 4 = 5
same as 4/5
8 0
3 years ago
Read 2 more answers
Y=x2-2x-5<br> Change to vertex form
MaRussiya [10]

The vertex form is y=(x-1)^{2} -6

Step-by-step explanation:

The given equation y=x^{2} -2x-5 is a parabola. The vertex of the parabola is of the form y=ax^{2} +bx+c  

The parameters of the parabola are a=1, b=-2 and c=-5

The vertex of the x-coordinate is given by x=\frac{-b}{2a}

Thus, substituting the values of a and b in x=\frac{-b}{2a}, we get,

\begin{aligned}x &=\frac{-(-2)}{2(1)} \\&=\frac{2}{2} \\x &=1\end{aligned}

Now, substituting x=1 in y=x^{2} -2x-5, we get,

\begin{aligned}y &=1^{2}-2(1)-5 \\&=1-2-5 \\y &=-6\end{aligned}

Thus, the vertex is (1,-6)

The equation of parabola to be in vertex form is y=a(x-h)^{2} +k

where a is the coefficient of x^{2}, h is vertex of the x-coordinate and k is the vertex of the y-coordinate.

Hence, a=1, h=1 and k=-6

Thus, substituting the values in the equation of the vertex form,

y=1(x-1)^{2} -6\\y=(x-1)^{2} -6

Hence, the vertex form is y=(x-1)^{2} -6

8 0
3 years ago
Find the value of y.​
raketka [301]

Answer:

y=            <u>9x+55</u>

                    4

Step-by-step explanation:

if 9x+42=4y-13

9x+42+13=4y

y=            <u>9x+55</u>

                    4

4 0
3 years ago
Find the four rational numbers between 2/3 and 5/6​
Sav [38]

Answer:

Step-by-step explanation:

LCM of 3 and 6 = 6

2/3 = (2×2) / (3×2) = 4/6

4/6 = (4×5) / (6×5) = 20/30

5/6 = (5×5) / (6×5) = 25/30

Hence, 21/30, 22/30, 23/30 and 24/30 are four rational numbers between 2/3 and 5/6.

4 0
2 years ago
Slope 3/2 y-intercept -2 as slope intercept form
user100 [1]
Y = 3/2x + -2

The original form is y=mix+b
M is the slope which is up 3 over two
B is the intercept or -2
5 0
2 years ago
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