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Sergeu [11.5K]
3 years ago
14

Xét tính đồng biến nghịch biến của hàm số:y=-x^4-2x^2+5

Mathematics
1 answer:
lana66690 [7]3 years ago
5 0

Answer:

x=77

Step-by-step explanation:

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Quadrilateral DEFG has vertices D(−2,4) , E(4,7) , F(10,3) , and G(8,0) .
fredd [130]

A rotation 270° counterclockwise about the origin is the same as rotation 90° clockwise about the origin and has a rule:

(x,y)→(y,-x).

Then:

  • D(−2,4)→D'(4,2)
  • E(4,7)→E'(7,-4)
  • F(10,3)→F'(3,-10)
  • G(8,0)→G'(0,-8)

Answer: the coordinates of vertices of quadrilateral D′E′F′G′ are D'(4,2), E'(7,-4), F'(3,-10), G'(0,-8).

8 0
2 years ago
Maria invested $450 in a savings account and earned $126 in interest at the end of 7 years.
Brut [27]
The interest rate is B. 4%

Given:
Principal = 450
Interest = 126
term = 7 
rate = ?

Simple Interest is computed by multiplying the Principal, rate, and term.

Interest = P × r × t

126 = 450 × r × 7
126 = 3150r
r = 126/3150
r = 0.04 x 100% = 4%

To check:

I = 450 
× 0.04 x 7
I = 18 × 7
I = 126
5 0
3 years ago
20 POINTS
tigry1 [53]
This most definitely has to be a rhombus since it is a form of a square with 4 congruent sides where a rectangle only has 4 right angles.
To clarify, a trapezoid only has one pair of parallel sides if you were wondering.
8 0
3 years ago
The coordinates of point Q are (-2, -3). In which quadrant isQ?
mihalych1998 [28]
Point Q is in quadrant 3.
3 0
2 years ago
Read 2 more answers
What transformation of the square root function comes from the constant
Leto [7]

The required transformation is p=(\frac{v}{10.35} )^2

<h3>Transformation of functions</h3>

Given the function expressed as:

v=10.35 \times\sqrt{p}

We are to make p the subject of the formula. First, divide both sides by 10.35

\frac{v}{10.35} =\frac{10.35 \times\sqrt{p}}{10.35}\\ \frac{v}{10.35}=\sqrt{p}

Square both sides of the equation:

p=(\frac{v}{10.35} )^2

Hene the required transformation is p=(\frac{v}{10.35} )^2

Learn more on transformation here: brainly.com/question/17311824

4 0
2 years ago
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