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3 years ago

Help me please i’m so far behind and i’m trying to finish before summer ends im freaking out

Mathematics

2 answers:

maw [93]3 years ago

8 0

Answer:

The equation 2.5x -10.5 = 64(0.5^x) is true when x=5

Step-by-step explanation:

we need to solve the equation 2.5x -10.5 = 64(0.5^x)

We have to put the given values of x in the functions f(x) and g(x) and find their values

x f(x) = 2.5x -10.5 g(x) = 64(0.5^x)

2 2.5(2)-10.5 = -5.5 64(0.5^2) = 16

3 2.5(3) - 10.5 = -3 64(0.5^3) = 8

4 2.5(4) - 10.5 = -0.5 64(0.5^4) = 4

5 2.5(5) - 10.5 = 2 64(0.5^5) = 2

6 2.5(6) - 10.5 = 4.5 64(0.5^6) = 1

So, we need to solve the equation 2.5x -10.5 = 64(0.5^x)

This holds when x = 5 as shown in the table above.

frozen [14]3 years ago

3 0

The correct answer is 5
Solve for x by simplifying both sides of the equation, then isolating the variable.
X=5

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I need help with this question please!!!

stealth61 [152]

Answer:

Step-by-step explanation:

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and

y -----> (y + 3)

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(1, - 1) -----> ( - 1, 2)

(2, 3) -----> (0, 6)

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3 years ago

1) The given line passes through the points (−4, −3) and (4, 1).

USPshnik [31]

1). y-3=-2(x+4)

2) slope = 3/4
y+2=3/4(x+4)
y=3/4x +1
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looks like only the last one

7 0

3 years ago

Read 2 more answers

A fruit bowl is shaped like half of a sphere. The radius of the bowl is 15 cm. What is the volume of the bowl?

Delicious77 [7]

Answer:

(4500(Pi))/2 or 7068.585

Step-by-step explanation:

r = 15 cm

volume of a sphere:

(4/3)(Pi)r^3

Therefore:

(4/3)(Pi)15^3

15^3 = 3375

4/3 * 3375 = 4500

and since it is half a sphere (it is a bowl) the answer would be divided by two:

4500(Pi) divided by 2

14137.17 divided by 2

5 0

3 years ago

A contractor has submitted bids on three state jobs: an office building, a theater, and a parking garage. State rules do not all

german

Answer:

The following are the answer to this question:

Step-by-step explanation:

In the given question the numeric value is missing which is defined in the attached file please fine it.

Calculating the probability of the distribution for x:

$\to f(x) = 0.19\ for \ x=14\\\\\to f(x) = 0.29 \ for\ x=7\\\\\to f(x) = 0.38\ for \ x=1\\\\\to f(x)=0.14 \ for \ x=0\\$

The formula for calculating the mean value:

$\bold{ E(X)= x \times f(x)}$

$=14 \times 0.19+7 \times 0.29+1 \times 0.38+0\times 0.14\\\\=2.66 + 2.03+0.38+ 0\\\\=5.07$

$\bold{E(X^2) = x^2 \times f(x)}$

$=14^2 \times 0.19+7^2 \times 0.29+1^2 \times 0.38+0^2 \times 0.14 \\\\=196 \times 0.19+ 49 \times 0.29+1 \times 0.38+0 \times 0.14\\\\= 37.24+ 14.21+ 0.38+0 \\\\=51.83$

use formula for calculating the Variance:

$\to \bold{\text{Variance}= E(X^2) -[E(X)]^2}$

$= 51.83 - (5.07)^2\\\\= 51.83 - 25.70\\\\=26.13$

calculating the value of standard deivation:

Standard Deivation (SD) = $\sqrt{Variance}$

$= \sqrt{26.13} \\\\=5.111$

6 0

3 years ago

9x - 4y? +72x–24y— 36–0

earnstyle [38]

Not is posible because no exist a igualty

3 0

3 years ago