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3 years ago

“calculate the value of x”

Mathematics

1 answer:

ASHA 777 [7]3 years ago

5 0

X = 10 because i’m telepathic and can see your paper

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sasho [114]

What is the question you are trying to ask

3 0

3 years ago

You want to put $8,000 in a simple interest account. It has a 2% annual interest rate. How long must you invest that money to ea

Nutka1998 [239]

Answer:

2.5 years

Step-by-step explanation:

Interest= P×R×T÷100

T= 100I÷P×R

T= 100×400÷8000×2

T= 40000÷16000

T= 5÷2

T= 2.5 years

5 0

4 years ago

Given the position of the particle, what the position(s) of the particle when it’s at rest

choli [55]

The position function of a particle is given by:

$X\mleft(t\mright)=\frac{2}{3}t^3-\frac{9}{2}t^2-18t$

The velocity function is the derivative of the position:

$\begin{gathered} V(t)=\frac{2}{3}(3t^2)-\frac{9}{2}(2t)-18 \\ \text{Simplifying:} \\ V(t)=2t^2-9t-18 \end{gathered}$

The particle will be at rest when the velocity is 0, thus we solve the equation:

$2t^2-9t-18=0$

The coefficients of this equation are: a = 2, b = -9, c = -18

Solve by using the formula:

$t=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}$

Substituting:

$\begin{gathered} t=\frac{9\pm\sqrt[]{81-4(2)(-18)}}{2(2)} \\ t=\frac{9\pm\sqrt[]{81+144}}{4} \\ t=\frac{9\pm\sqrt[]{225}}{4} \\ t=\frac{9\pm15}{4} \end{gathered}$

We have two possible answers:

$\begin{gathered} t=\frac{9+15}{4}=6 \\ t=\frac{9-15}{4}=-\frac{3}{2} \end{gathered}$

We only accept the positive answer because the time cannot be negative.

Now calculate the position for t = 6:

$undefined$

6 0

1 year ago

A washer and a dryer cost $552 combined. The washer costs $98 less than the dryer. What is the cost of the dryer?

Sedaia [141]

552-98 = 450

454/2 = 227

washer cost $227

227+98 = 325

dryer cost $325

5 0

3 years ago

What is the ratio of rise to run between the points (3, 4) and (–2, 0)?

mihalych1998 [28]

Answer:

○ B) ⅘

Step-by-step explanation:

Starting from the second endpoint, you go four blocks south over five blocks west [west and south are negatives], giving you ⅘.

I am joyous to assist you anytime.

4 0

3 years ago