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2 years ago

Im starting to have problems with this

Mathematics

2 answers:

Svetllana [295]2 years ago

7 0

Answer:

x= 4.24

Step-by-step explanation:

AfilCa [17]2 years ago

4 0

X=4.24 is most likely the right answer like the other answer you have gotten

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Identify the hypothesis and conclusion of this conditional statement: If two lines intersect at right angles, then the two lines

Sedaia [141]

Answer: b

Step-by-step explanation:

NOTE:

Hypothesis: "if" part of the sentence
Conclusion: "then" part of the sentence

hypothesis : If two lines intersect at right angles

conclusion: then the two lines are perpendicular

6 0

3 years ago

*****Write a polynomial using the roots -3,5i. PLEASE HELP IM SO LOST!!!

Vladimir79 [104]

The polynomial $(x-a)$ has a unique root, $a$ , for any $a$ .

Hence $(x+3)(x-5i)$ is a polynomial with roots $-3$ and $5i$

8 0

3 years ago

A kite with a 100 foot-long string is caught in a tree. When the full length of the string is stretched in a straight line to th

spayn [35]

Hyp=100,adj side=30

angle= $cos^{-1}(30/100)$

6 0

3 years ago

Read 2 more answers

Could someone help me rnnn?

GuDViN [60]

Answer:

vertex = (0, -4)

equation of the parabola: $y=3x^2-4$

Step-by-step explanation:

Given:

y-intercept of parabola: -4
parabola passes through points: (-2, 8) and (1, -1)

Vertex form of a parabola: $y=a(x-h)^2+k$

(where (h, k) is the vertex and $a$ is some constant)

Substitute point (0, -4) into the equation:

$\begin{aligned}\textsf{At}\:(0,-4) \implies a(0-h)^2+k &=-4\\ah^2+k &=-4\end{aligned}$

Substitute point (-2, 8) and $ah^2+k=-4$ into the equation:

$\begin{aligned}\textsf{At}\:(-2,8) \implies a(-2-h)^2+k &=8\\a(4+4h+h^2)+k &=8\\4a+4ah+ah^2+k &=8\\\implies 4a+4ah-4&=8\\4a(1+h)&=12\\a(1+h)&=3\end{aligned}$

Substitute point (1, -1) and $ah^2+k=-4$ into the equation:

$\begin{aligned}\textsf{At}\:(1.-1) \implies a(1-h)^2+k &=-1\\a(1-2h+h^2)+k &=-1\\a-2ah+ah^2+k &=-1\\\implies a-2ah-4&=-1\\a(1-2h)&=3\end{aligned}$

Equate to find h:

$\begin{aligned}\implies a(1+h) &=a(1-2h)\\1+h &=1-2h\\3h &=0\\h &=0\end{aligned}$

Substitute found value of h into one of the equations to find a:

$\begin{aligned}\implies a(1+0) &=3\\a &=3\end{aligned}$

Substitute found values of h and a to find k:

$\begin{aligned}\implies ah^2+k&=-4\\(3)(0)^2+k &=-4\\k &=-4\end{aligned}$

Therefore, the equation of the parabola in vertex form is:

$\implies y=3(x-0)^2-4=3x^2-4$

So the vertex of the parabola is (0, -4)

5 0

2 years ago

Read 2 more answers

A coin is biased to display heads 75% of the time . It’s tossed 20times and the out comes are recorded the most improbable simul

Sergio [31]

Multiply the number of tosses by the percent of heads:

20 tosses x 0.75 = 15

The answer is 15.

7 0

2 years ago