All categories

3 years ago

Please I need help with this problem number 5????

Mathematics

1 answer:

zheka24 [161]3 years ago

3 0

Estimating the area:
$x = (20 \times 8)(13 \times 8) \\ x = 264$
Calculating wallpaper:
$x = (264 \times 1.05) \div 35 \\ x = 7.92 \\ x = 8$
we round up here because they will need a full roll to complete the room. Since they can't buy 7.92 rolls, they must buy 8.

Calculating cost:
$x = 8(31.48) + 31.48(0.0825) \\ x = 254.44$

You might be interested in

Today the price of a new cell phone is $129 in 2000 the price of a similar cell phone was $240 what is the percent of the change

netineya [11]

Answer:

46.25% is the percent of the change in the price of a cell phone from 2000 to today.

Step-by-step explanation:

Cost of a cell phone in the year of 2000. C= $240

Cost of a same cell phone today, C'= $129

The percent of the change in price:

$\frac{C-C'}{C}\times 100$ :

$\frac{\$240-\$129}{\$240}\times 100=46.25\%$

46.25% is the percentage of the change in the price of a cell phone from 2000 to today.

5 0

2 years ago

The Big Bad Baseball team had lots of great hitters. Sue had a .426 batting average. Heidi had 12 hits in a 15 times a bat. Sele

Mashcka [7]

For this case, what you must do is pass all the averages to the same unit of measurement in order to make the comparison between the three batters.
We have then:
Sue = 0.426
Heidi = (12/15) = 0.8
Selena = (47.5 / 100) = 0.475
answer
the highest batting average was for Heidi with an average of 0.8

3 0

3 years ago

In the expression , 5.28 x 10^3 , which number is the base ?

solong [7]

Bse is 10
x^m, x is base of exponent

7 0

3 years ago

Solve the literal equation for y.

sattari [20]

Answer:

2B / (mx) = y

Step-by-step explanation:

B = 1/2 mxy

Multiply each side by 2

2B = 2* 1/2 mxy

2B = mxy

Divide each side by mx

2B / (mx) = mxy / (mx)

2B / (mx) = y

4 0

3 years ago

Read 2 more answers

The Nuthouse offers a mixture of soy nuts and almonds, Almonds

elena55 [62]

Answer:

14 pounds

Step-by-step explanation:

The given equations can be solved for y by substituting for x. The first equation is convenient for writing x in terms of y.

<h3>Solution</h3>

x = 20 -y . . . . . . . subtract y from the first equation

7(20 -y) +5.5y = 119 . . . . . substitute for x in the second equation

140 -1.5y = 119 . . . . . . . . simplify

21 = 1.5y . . . . . . . . . . . add 1.5y -119 to both sides

14 = y . . . . . . . . . . . .divide by 1.5

14 pounds of soy nuts should be used in the mixture.

<em>Additional comment</em>

There are many ways to solve a system of two linear equations. The attachments shows a matrix solution using a suitable calculator. It tells us that x=6 and y=14, as we found above.

6 0

2 years ago