3. Select all the situations that can be represented by an exponential function.

1. Jim deposits $1,000 in an account that doubles in value every 7 years.
2. Brian deposits $30 in a savings account. Then he deposits $2 each month for the next 9 months.
3. Leon runs a mile in 8 minutes. Then he runs a mile each day for the next 4 days, reducing his time by 1.5% each day.
3.Cynthia runs a mile in 9 minutes. Then she runs a mile each day for the next 4 days, reducing her time by 6 seconds each
5.Marie deposits $30 in a savings account. Then she makes a deposit each month for the next 9 months, putting in $2 more
deposit

Answer:

yes they are

Step-by-step explanation:

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".

Answer:

Since stress is greater than ultimate strength, the wire will break.

Step-by-step explanation:

The titanium wire is experimenting an axial load. Ultimate strength equals [tex]2.20\times 10^{8}\,Pa[/tex]. The wire shall break if and only if stress is at least equal to ultimate strength. The equation for axial stress ([tex]\sigma[/tex]), measured in pascals, in the wire with circular cross-section is:

[tex]\sigma = \frac{4\cdot F}{\pi\cdot D^{2}}[/tex] (1)

Where:

[tex]F[/tex] - Axial force, measured in newtons.

[tex]D[/tex] - Cross-section diameter, measured in meters.

Please notice that axial force is the weight of the man hanging from wire.

If we know that [tex]F = 800\,N[/tex] and [tex]D = 0.002\,m[/tex], then the axial stress experimented by the titanium wire is:

[tex]\sigma = \frac{4\cdot (800\,N)}{\pi\cdot (0.002\,m)^{2}}[/tex]

[tex]\sigma \approx 2.546\times 10^{8}\,Pa[/tex]

Since stress is greater than ultimate strength, the wire will break.

Answer:

Here is it answer

Step-by-step explanation:

4+√2/2+√2 × 2-√2/2-√2

8+2√2-4√2-2/(2)^2-(√2)^2

6-2√2/4-2

(3-√2)

therefore 3-√2

mark as brainliast

a=3

b=2

Answer:

93.300

Step-by-step explanation:

(35•1.5) +(23•1.2)+(12•1.1)

Answer:

no

Step-by-step explanation:

it will be b from baac

Answer: The fraction of the minutes did Billy use = [tex]\dfrac15[/tex].

Step-by-step explanation:

Let x = Total minutes given in the plan.

Last month, Jodie used [tex]\dfrac34[/tex] of the minutes.

Remaining minutes = [tex]x-\dfrac34x=\dfrac14x[/tex]

Billy used = [tex]\dfrac45(\dfrac14x)=\dfrac{x}{5}[/tex]  minutes

Fraction of the minutes used by Billy = [tex]\dfrac{\dfrac{x}{5}}{x}=\dfrac15[/tex]

Hence, the fraction of the minutes did Billy use = [tex]\dfrac15[/tex].

Answer:

B, 7/24

Step-by-step explanation:

(x=theta)

sec(x) = 1/cos(x) so 1/cos(x) = 25/24

[tex](\frac{1}{cosx})^-1 = (\frac{25}{24} )^-1\\\\cos(x) = 24/25[/tex]

Then use the cos^-1 function on your calculator to find out theta.

Then tan your found value of theta.

You should find that tan (theta) = 7/24

Answer:

y = x

Step-by-step explanation:

Circumference = 2 x pi x r

Circumference = 2 x 3.14 x 3.5m

Circumference = 21.98

Round to 22m

The answer is c. 22m

Answer:

-8 is correct answer of this question

Answer: x=—8

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don’t contain the variable

Answer:5.6 x 10^5

Step-by-step explanation:

When ever we hear sum, what comes to our mind must be addition

Here we are Adding 5.3 x 10 to the fifth power= 5.3 x 10^5 to

3.8 x 10 to the fourth power = 3.8 x 10^4

First,

Expanding the scientific notation we have that

5.3 x 10^5 = 530,000

3.8 x 10^4=     38,000

Add           = 568,000

Putting back in Scientific notation  we have 568000 = 5.6 x 10^5

Answer:

5.68 x 10 to the 5th power

Step-by-step explanation:

Answer:

The large number is 15

Step-by-step explanation:

15 * (-3) = -45

15 + (-3) = 12

Answer:

$2,000 and $3,000

Step-by-step explanation:

The computation is shown below:

Given that

The Number of shares is 100

The Increase from $20 to $30

If the per share is $20, so the earning of the shareholder is

= 100 shares × $20

= $2,000

And ,if the per share is $30, so the earnings of the shareholder is

= 100 shares × $30

= $3,000

Answer:

The middle term is, -5x 2 its coefficient is -5 . The last term, "the constant", is -2 Step-1 : Multiply the coefficient of the first term by the constant 3 • -2 = -6

Answer:

wuts trailmakers...

Step-by-step explanation:

Answer:

Step-by-step explanation:

Angle ACB is congruent to Angle DCE

Reason 4: SAS- Side Angle Side

Angle ACB is congruent to Angle DCE

Reason 4: SAS- Side Angle Side is the correct answer to the question

Answer:

p(-3) = -184

Step-by-step explanation:

p(-3) = 4(-3)^3 - 5(-3)^2 + 7(-3) -10

        = 4(-27) - 5(9) - 21 - 10

        = -108 - 45 - 21 - 10

        = -184

replace x with -3 and then solve

answer:

we know the formula for area is,

L x W

so,

2/7 (a+4) = area

solve this by distributing the 2/7,

you get = 2/7a + 8/7

the area is 2/7a + 8/7

if correct, please mark the brainliest :)

Answer:

If they can be expressed in the form of y=kx, they are proportional. In other words, these quantities always maintain the same ratio. That is, when you divide any pair of the two values, you always get the same number k.

Answer:

39/2 π ft^2

Step-by-step explanation:

2(13)(270)/360

Answer:

part A 210 Part B  4.4

Step-by-step explanation:

PART A    42 TIMES 5   210

that will be the rate she ran.

PART B 1.1 times 4 that will be the minute.

Answer:

Infinitely many solutions

Step-by-step explanation:

There are 2 variables in this equation. Since, there are infinite many numbers, we can substitute them in x & y. This will lead to an infinite number of solutions.

Answer:

23 females are right handed and 9 are left handed

Step-by-step explanation:

So to get this answer :

18 OF THE 41 RIGHT HANDED EMPLOYEES ARE MALE.

The statement means that there are 41 right handed employees and 18 of those are male thus the remaining are FEMALE.

To find the number of right handed employees who are female just subtracted 18 from 41 ( becaus etotal number of right handed males is 18 and the total number of right handed employees is 41.)

SO 23 FEMALES IN THE COMPANY ARE RIGHT HANDED.

Because 23 females are right handed that means to get the number of left handed females you subtract the total number of right handed females from the total number of females in the company THUS:

32 - 23 = 9 LEFT HANDED FEMALES

HOPE IT HELPED

Answer:

sorry

Step-by-step explanation:

Answer:

4x+3x-1+x+3=8x+2=82

8x=80

x=10

3x-1=30-1=29

Step-by-step explanation:

Answer:

Step-by-step explanation:

the volume the box,

V=12 1/3*4 1/2* 7 1/4

V=37/3*9/2*29/4=9657/24=402 3/8

Answer:

x = every time he goes to target.

y = the amount he has left.

25 - 5x = y

After 3 trips, he will have 10 dollars left.

Step-by-step explanation:

25 - 5(3) = y

25 - 15 = 10

Answer:

10

Step-by-step explanation:

25 - 5, 20 - 5, 15 - 5 = 10

Answer: 5x+4

Step-by-step explanation: add the terms and combine

Answer:

[tex] \frac{15}{16} \\ \frac{90}{96} \\ \frac{135}{144 } [/tex]

Answer:

15/16, 90/96 and 135/144. hope it helps