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3 years ago

Round 18.79 to the underlined place. A. 18 B. 17 C. 20 D. 29

Mathematics

1 answer:

alisha [4.7K]3 years ago

8 0

What part of the question is underlined?

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$75 before tax. Disc: 10% Tax: 7%, Tip: 20% what’s the total?

ololo11 [35]

Answer:

$102.75

Step-by-step explanation:

Given the following question:

We are given a cost of 75 dollars and are being asked to find the total cost after adding a tip, tax, and disc to the cost. To find this answer we will use the formula to calculate percentages making sure we use 75 as our base for each addition to our total cost.

Formula to calculate percentages:

$\frac{p\times n}{100}$

First the disc:

$\frac{10\times 75}{100}$
$10\times75=750$
$750\div100=7.5$
$=7.5$

Next the tax:

$\frac{7\times75}{100}$
$7\times75=525$
$525\div100=5.25$
$=5.25$

Last but not least the tip:

$\frac{20\times75}{100}$
$20\times75=1500$
$1500\div100=15$
$=15$

Finally add:

$75+7.50+5.25+15=102.75$
$=102.75$

The total cost after adding the disc, tax, and the tip will be "$102.75."

Hope this helps.

5 0

2 years ago

A man walks for x hours at a speed of

alexandr1967 [171]

Given:

A man walks for x hours at a speed of (x + 1) km/h and cycles for (x - 1) hours at a speed of (2x + 5) km/h.

Total distance travelled is 90 km.

To find:

The value of x.

Solution:

We know that,

$Speed=\dfrac{Distance}{Time}$

$Speed\times Time=Distance$

A man walks for x hours at a speed of (x + 1) km/h, so walking distance is

$D_1=(x+1)(x)$ km

The man cycles for (x - 1) hours at a speed of (2x + 5) km/h, so the cycling distance is

$D_2=(2x+5)(x-1)$ km

Now,

Total distance = 90 km

$D_1+D_2=90$

$(x+1)x+(2x+5)(x-1)=90$

$x^2+x+2x^2-2x+5x-5-90=0$

$3x^2+4x-95=0$

$3x^2+19x-15x-95=0$

$x(3x+19)-5(3x+19)=0$

$(3x+19)(x-5)=0$

$3x+19=0\text{ and }x-5=0$

$x=\dfrac{-19}{3}\text{ and }x=5$

Time cannot be negative. So, the only possible value of x is 5.

3 0

2 years ago

Two types of barrel units were in use in the 1920s in the united states. the apple barrel had a legally set volume of 7056 cubic

r-ruslan [8.4K]

1.) 7,056 * 41 = 289,296 (apple barrel volume * no. of barrels sold)
5,826 * 41 = 238,866 (cranberry barrel volume * no. of barrels sold)

2.) Subtract cranberry barrel volume from apple barrel volume
289,296 - 238,866 = 50,430 cubic inches

3.) Convert 50,430 cubic inches to liters
50,430 = 826.39 liters or 826.40 liters (rounded off)

4.) Therefore, 826.40 liters is the discrepancy in the shipment volume.

3 0

3 years ago

Hey guys in the middle of my final! please help? will mark the brainiest + 30 points !

MrRa [10]

Answer:

X=90

..............

3 0

2 years ago

1,2,3,4,5,7,7,7,8,8 What is the median

Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers