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4 years ago

Best explained and correct answer gets brainliest.

Mathematics

1 answer:

kipiarov [429]4 years ago

6 0

total = 2372* (1+0.045)^20=

2372*1.045^20=

2372 * 2.411714025= 5720.585

she will have 5720.59 in 20 years

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Which of the quadratic functions has the narrowest graph?

charle [14.2K]

Answer:

$y=\frac{1}{8}x^2$

Step-by-step explanation:

A quadratic function has the formula ax² + bx + c

To determine if a graph will be narrow or wide, the leading coefficient, a, will be the factor that determines this
The greater the coefficient, the narrower the parabola
The lesser the coefficient, the wider the parabola

Here all of the functions are in the form ax²

In $y=\frac{1}{8}x^{2}$ , our "a" term is $\frac{1}{8}$
In y = -2x², our "a" term is -2
In y = -3x², our "a" term is -3
In $y=\frac{1}{3}x^{2}$ , our "a" term is $\frac{1}{3}$

We can eliminate the two functions with the negative coefficients because they are much smaller than the two functions with the fractions as coefficients, and will therefore open much wider.

We can now compare the two remaining functions, $y=\frac{1}{8}x^2$ and $y=\frac{1}{3}x^2$

Giving the two fractions common denominators would turn them into $y = \frac{3}{24}x^2$ and $y=\frac{8}{24} x^2$
The equation with the larger fraction will be the parabola that is the narrowest. In this case, it is the $y=\frac{8}{24} x^2$ .
Therefore, $y=\frac{1}{8}x^2$ will have the narrowest graph

7 0

3 years ago

I WILL MARK BRAINLEIST

natta225 [31]

Answer:

yes

Step-by-step explanation:

they start from the same place so ya, that is proportional

8 0

3 years ago

Read 2 more answers

Function A and Function B are linear functions. Compare the two functions and choose all that are correct. Can someone help?

iris [78.8K]

Answer:

(b) and (c) are true

Step-by-step explanation:

Given

Function A and B

First, calculate the slope of A

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{24 - -21}{8- -7}$

$m = \frac{45}{15}$

$m =3$

The equation of function A is:

$y = m(x - x_1) + y_1$

$y = 3(x - 8) + 24$

$y = 3x - 24 + 24$

$y = 3x$

The general form of a function is:

$y = mx + b$

Where $m = slope$ and $b = y\ intercept.$

This implies that:

$Slope = 3$

$Y\ intercept = 0$

For function B:

$y = 4x - 3$

$Slope = 4$

$Y\ intercept = -3$

By comparison:

(b) and (c) are true

6 0

3 years ago

A sea turtle swims at a speed of 27 km per h. A girl swims 14 dm per s. How much faster does the sea turtle swim than the girl i

arlik [135]

Let us convert both speeds to meters per minute.
The turtle:
27 km/ hr
1000 m in a kilometer
60 minutes in an hour
(27*1000)/60
= 450 m/min
The girl:
14 dm/ s
0.1 m in a dm
1/60 minutes in a second
(14*0.1)/(1/60)
= 84 m/min
The turtle is
450 - 84
= 366 m/min faster than the girl

5 0

3 years ago

What is the median of 4,5,8,11

noname [10]

14

When you have an odd number you add all the numbers up and then divide by two.

3 0

3 years ago