Ask question

Ask question

All categories

3 years ago

9

Bob sold 34 trading cards, each for 50 cents more than the price he bought them. If each card was originally $0.25, how much did

he earn?

1 answer:

Naya [18.7K]3 years ago

3 0

Answer:

E/A card was sold for $.75, which means the 34 cards were sold for a total of $25.50

You might be interested in

Hello can someone please help me with this.

otez555 [7]

Answer:

a)

T` {-4,-2}

R` {2,8}

S` {-9,4}

Step-by-step explanation:

x, y → y,x

5 0

3 years ago

Let a and b be real numbers where ab+0. Which of the following functions could represent the graph below?

8090 [49]

Answer:

O f(x) = x(x – b) 3

Step-by-step explanation:

$\huge\color{aqua}{\boxed{{\colorbox{black}{hope \: it \: helps}}}}$

3 0

3 years ago

Find the length of the curve. R(t) = 7t, 3 cos(t), 3 sin(t) , −2 ≤ t ≤ 2

Leviafan [203]

we are given

$r(t)=(7t,3cos(t),3sin(t))$

we can find x , y and z

$x=7t,y=3cos(t),z=3sin(t))$

now, we can use arc length formula

$L=\int\limits^a_b {\sqrt{(x')^2+(y')^2+(z')^2} } \, dt$

now, we can find derivative

$x'=7,y'=-3sin(t),z'=3cos(t))$

now, we can plug values

and we get

$L=\int _{-2}^2\sqrt{7^2+\left(-3\sin \left(t\right)\right)^2+\left(3\cos \left(t\right)\right)^2}dt$

$L=\int _{-2}^2\sqrt{7^2+9}dt$

$=\sqrt{58}\cdot \:2-\left(-2\sqrt{58}\right)$

$L=4\sqrt{58}$ ...........Answer

8 0

4 years ago

Dan buys a car for £2100.

SVETLANKA909090 [29]

Answer:

£1837.5

Step-by-step explanation:

Given data

Cost of car P= £2100.

Rate r= 2.2%

Time t= 6 years

Now we want to find the worth after 6 years, let us apply the compound interest expression but this time for depreciation

A= P(1-r)^t

Substitute

A= 2100(1-0.022)^6

A= 2100*(0.978)^6

A= 2100*0.875

A= £1837.5

Hence the amount of the car after 6 years is £1837.5

8 0

3 years ago

6. Gabriella invests $6,500 into a savings account that earns 4.5% interest, and she is investing the money for 5 years without

sdas [7]

Answer:

1,462.50

Step-by-step explanation:

6500

x.045

=292.50 per year

x. 5 years

=1,462.50

4 0

3 years ago