All categories

3 years ago

Help me with ixl please

Mathematics

1 answer:

lapo4ka [179]3 years ago

8 0

Answer:

$33.00

Step-by-step explanation:

You find out how much the sale price is by subtracting 25% of 40 from 40:

40 - [(.25)(40)] and that equals 30. So the sale price is $30. Now if the tax is 10% (.1 in decimal form), we find the total cost by adding .1(30) to 30:

30 + [(.1)(30)] which is $33

You might be interested in

Answer ASAP pls pls

LiRa [457]

D be the correct answer

6 0

3 years ago

Find the volume of a right circular cone that has a height of 8.1 in and a base with a diameter of 7.6 in. Round your answer to

Ksivusya [100]

Answer:

$V=122.5in^3$

Step-by-step explanation:

The volume of a right circular cone is given by:

$V=\frac{\pi r^2h}{3}$

where r is the radius of the circle and h is the height of the cone, and $\pi$ is a constant $\pi=3.1416$ .

According to the problem the height is:

$h=8.1 in$

and we don't have the radius but we have the diameter, which is useful to find it. We just divide the diameter by 2 to find the radius:

$r=\frac{d}{2}=\frac{7.6in}{3}=3.8in$

Now, we can find the volume by substituting all the known values:

$V=\frac{\pi r^2h}{3}$

$V=\frac{(3.1416)(3.8in)^2(8.1in)}{3} \\\\V=\frac{(3.1416)(14.44in^2)(8.1in)}{3} \\\\V=\frac{367.454in^3}{3} \\\\V=122.485$

Rounding the volume to the nearest tenth of cubic inch we get:

$V=122.5in^3$

7 0

4 years ago

Peter uses unit cubes to build a figure in the shape of letterX.What is the fewest unit cubes that Peter can use to build the fi

scZoUnD [109]

5 unit cubes you would put them corner to corner like this:
X. X
X
<span>X. X

Hope this helps!</span>

4 0

3 years ago

Read 2 more answers

Here are the first four terms of a quadratic sequence.

Llana [10]

Answer:

a = 3, b = 1, c = - 3

Step-by-step explanation:

Substitute n = 1, 2, 3 into the n th term

a + b + c = 1 → (1)

4a + 2b + c = 11 → (2)

9a + 3b + c = 27 → (3)

Subtract (1) from (2) term by term to eliminate c

Subtract (2) from (3) term by term to eliminate c

3a + b = 10 → (4)

5a + b = 16 → (5)

Subtract (4) from (5) term by term to eliminate b

2a = 6 ( divide both sides by 2 )

a = 3

Substitute a = 3 into (4) and evaluate for b

3(3) + b = 10

9 + b = 10 ( subtract 9 from both sides )

b = 1

Substitute a = 3, b = 1 into (1) and evaluate for c

3 + 1 + c = 1

4 + c = 1 ( subtract 4 from both sides )

c = - 3

Then a = 3, b = 1 and c = - 3

4 0

3 years ago

Anumeha is mowing lawns for a summer job. For every mowing job, she charges an initial fee of $ 10 $10dollar sign, 10 plus a con

slavikrds [6]

Answer:

F(t) = 10 + 5(t)

Step-by-step explanation:

The complete question is as follows;

Anumeha is mowing lawns for a summer job. for every mowing job, she charges an initial fee of \$10$10dollar sign, 10 plus a constant fee for each hour of work. her fee for a 555-hour job, for instance, is \$35$35dollar sign, 35. let f(t)f(t)f, left parenthesis, t, right parenthesis denote anumeha's fee for a single job fff (measured in dollars) as a function of the number of hours ttt it took her to complete it. write the function's formula.

Solution

We are interested in writing the function F(t) formula for the fee charged by Anumeha per job.

Now, the key to writing this function is knowing exactly the constant fee she charges on the job.

We were told that she got $35 for a 5 hour job.

Thus, the constant amount charged is as follows;

Since it’s $10 as initial fee and the constant fee is per hour;

35 = 10 + 5(x)

where x is the constant fee per hour

35 = 10 + 5x

5x = 35-10

5x = 25

x = 25/5

x = $5

This mess that she charges a constant fee of $5 per hour

So we can write the equation now.

F(t) = 10 + 5(t)

where t represents the number of hours she spent on the job

6 0

3 years ago