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3 years ago

The 20% tip on a $8 sandwich

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

8 0

Answer:

$1.60 tip on a $8 sandwich

Step-by-step explanation:

SO to find percent

just multiply the number by the percent

Remeber the percent means x/100

SO in this case 20/100 or 1/5

So you can just multiply 1/5*8 and get 1 3/5.

If you convert 3/5 into a decimal

3 divided by 5

that is .6

SO add them up

1+0.6= $1.60

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Please assist me with these story problems.

Anna71 [15]

Answer:

4. 16

5. $88

6. $687.50

Step-by-step explanation:

4. Let n represent the number.

An expression representing the number multiplied by 0.9 and 6.3 subtracted from the product is ...

0.9n -6.3

We want that result to be 4.5, so we have the equation ...

0.9n -6.3 = 4.5

Since all of the coefficients are divisible by 0.9, we can divide by 0.9 to get ...

n -7 = 9

Adding 7 gives ...

n = 16

The number is 16.

_____

5. For a problem like this, I like to work it backward. If Craig got an extra $18, then everyone's share was $32 -18 = $14. That was the share from a 5-way split, so the amount the friends split evenly was 5×$14 = $70. The total they started with must have been $70 +18 = $88.

The amount they split unevenly was $88. The amount they split evenly, after setting aside $18 for Craig's parents, was $70.

It is a bit tricky to write one equation for the amount the friends started with before they did any splits. Call that amount A. Then after setting aside $18, they split (A-18) five ways. Each of those splits was then (A-18)/5. When the $18 was added to one of those, the result was the $32 that Craig got. So, we have ...

(A -18)/5 +18 = 32

and the solution process is similar to the "working backward" description above: subtract 18, multiply by 5, add back 18.

(A -18)/5 = 14

A -18 = 70

A = 88 . . . . . . . . the amount the friends split unevenly

_____

6. Let P represent the original price of the laptop. We're told the price after all of the discounts was 500, so we have ...

P -50 -(0.20P) = 500

0.80P = 550 . . . . . add 50, collect terms

P = 687.50 . . . . . . . divide by the coefficient of P

The original price was $687.50.

4 0

3 years ago

NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW!!! Chapter 11a

notsponge [240]

9514 1404 393

Answer:

vertical shift: 7 (up)
horizontal shift: 2 (right)
vertical asymptote: x=2
domain: x > 2
range: all real numbers

Step-by-step explanation:

For any function f(x), the transformation f(x -h) +k represents a horizontal shift of h units to the right and k units upward.

Here, the parent function is log₂(x) and the transformation to log₂(x -2) +7 represents translation 2 units right and 7 units upward.

The parent function has a vertical asymptote at x=0, so the shifted function will have a vertical asymptote at x-2=0, or x = 2.

The parent function has a domain of x > 0, so the shifted function will have a domain of x-2 > 0, or x > 2.

The parent function has a range of "all real numbers." Shifting the function vertically does not change that range. The range of the shifted function is still "all real numbers."

The graph is shown below. The vertical asymptote is the dashed orange line.

_____

The "work" is in matching the pattern f(x -h) +k to the function log₂(x -2) +7.

3 0

3 years ago

if Kevin processed 135 orders and Michael did 90 orders what percentage did Kevin do more than Michael

vagabundo [1.1K]

90/135 = 0.666666667
0.666 x 100 = 66.6 %

7 0

3 years ago

Which of the following inequalities would be graphed with an open circle?

icang [17]

3(x - 2) < 18 and h + 6 > -3h + 12 would be graphed with an open circle.

Open circle is a term used for numbers that are less than (<) or greater than (>). On the other hand, Closed circle is used for numbers that are less than or equal to (≤ ) and greater than or equal to (≥).

Here, we are given four inequalities, let us check them one by one-

A. h + 6 > -3h + 12

⇒ 4h > 6

or h > 3/2

Here, we see that there is no equality sign, this means that 3/2 won't be included and hence h + 6 > -3h + 12 would be an open circle inequality.

B. 7 ≥ d/3

⇒ d ≤ 21

Here, we can clearly see the equality sign which means that 21 will be included. Hence, 7 ≥ d/3 would not be graphed with an open circle.

C. 3(x - 2) < 18

x - 2 < 6

x < 8

Here, we see that there is no equality sign, this means that 8 won't be included and hence 3(x - 2) < 18 would be graphed with an open circle.

D. 2y ≤ 14

y ≤ 7

Here, we can clearly see the equality sign which means that 7 will be included. Hence, 2y ≤ 14 would not be graphed with an open circle.

Thus, 3(x - 2) < 18 and h + 6 > -3h + 12 would be graphed with an open circle.

Learn more about inequalities here-

brainly.com/question/24372553

#SPJ9

3 0

2 years ago

Deena is planting two rectangular gardens. One garden is 3.67 feet by 8.56 feet, and the other garden is 3.67 feet by 7.45 feet.

Finger [1]

Answer:

A is the correct expression

Step-by-step explanation:

the formula for area of a rectangle is A=WxL

A=area W=width L=length

8.56x3.67=31.42 area of first garden

7.45x3.67=27.34 area of second garden

<em>hope this helps!</em>

<em>have a great day :)</em>

3 0

4 years ago

The 20% tip on a $8 sandwich​

The 20% tip on a $8 sandwich