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Zinaida [17]
2 years ago
13

Is her hair really that long... Possibly a brainly help me understand scientific notation better <3

Mathematics
1 answer:
Olenka [21]2 years ago
6 0

Answer: 1 x 10^3

Step-by-step explanation:

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The sales of a particular brand of children’s athletic shoes rose from $6,900,000 to $7,400,000. Find the percent of increase in
Sidana [21]

Answer:  7.2%

Step-by-step explanation:

First find the difference between the amounts.

7,400, 000 - 6, 900,000 = 500, 000  

Now divide the obtain number by  the original number which is 6,900,000

500, 000/ 6,900,000 = 0.07246  

Multiply 0.07246 by 100 to convert it to a percent.

0.07246  = 7.2463..%  

Round it to the nearest tenth of a percent.

7.2463.. rounded to the nearest tenth is 7.2%

8 0
2 years ago
Which of the following statements must be true based on the diagram below select all that apply
ipn [44]

Answer:

all are true other than NONE OF THE ABOVE

Step-by-step explanation:

Hope this helps. let me know if any questions.

3 0
2 years ago
A rectangle desktop has a length of 3(x+2) units and a width of (x-7). Write an expression for the area
yanalaym [24]

Answer:

Expression for area = 3x² - 15x - 42

Step-by-step explanation:

Given that:

Length of rectangle desktop = 3(x+2) = 3x+6 units

Width of rectangle desktop = x - 7

Area of rectangle desktop = Length * Width

Area of desktop = (3x+6)(x-7)

Area = 3x(x-7) +6(x-7)

Area = 3x² - 21x + 6x - 42

Area = 3x² - 15x - 42

Hence,

Expression for area = 3x² - 15x - 42

5 0
2 years ago
Supplementary angles formed by parallel lines and transversals that are both outside the parallel line and on the opposite side
Mashcka [7]

Answer:

Alternate exterior angles

Step-by-step explanation:

Alternate exterior angles are angles that are formed outside two parallel lines that cuts through a transversal line. these angles are formed on the opposite side of the transversal line ( alternate side).

Also Alternate exterior angles are congruent in nature are they are not adjacent angles as well

4 0
3 years ago
A pendulum clock is a clock that uses a swinging weight (a pendulum) as its
Gnoma [55]

Answer: x(t) = 5cm*cos(t*pi/2s)

Step-by-step explanation:

This is a sinusoidal equation, so we can write this as:

x(t) = A*cos(c*t + p)  + B

where B is the axis around the movement, as the resting position is x = 0, we have B = 0

so x(t) = A*cos(c*t + p)

A is the amplitude of the oscilation, c is the frequency and p is a phase.

We know that when t = 0s, we have x(2s) = 5cm

if this is the maximum displacement, then knowing that the maximum of the cosine is cos(0) = 1

then we must have that p = 0

x(0s) = A*cos(0) = 5cm

then we have A = 5cm

Now, when t = 2s, we have:

x(2s) = 5cm*cos(2s*c) = -5cm

then 2s*c is the minimum of the cos(x) function, this is:

cos(pi) = -1

then 2s*c = pi

c = pi/2s.

then our function is:

x(t) = 5cm*cos(t*pi/2s)

7 0
3 years ago
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