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Harlamova29_29 [7]
2 years ago
8

Please hlep me solve -3 x ( w + 5) + 4w

Mathematics
1 answer:
marin [14]2 years ago
3 0

Answer:

w-15

Step-by-step explanation:

-3 * ( w + 5) + 4w

Distribute the -3 to each term in the parentheses

-3w -15 + 4w

Combine like terms

-3w+4w   -15

w-15

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For the class of 2013's prom Norman's dress shop sold cheaper dresses for $90 each and more expensive dresses for $140 each. The
Tema [17]

Answer:

Number of cheaper dresses sold  is 35

Number of expensive  dresses sold  is 15

Step-by-step explanation:

Given:

Cost of cheaper dresses = $90

Cost of  expensive dresses = $140

Total cost of  the dresses = $5250

To Find:

Number of cheaper dress = ?

Number of expensive  dress = ?

Solution:

Let

The number of  cheaper dresses be x

The number of  expensive dresses be y

(Number of cheaper dresses X cost of cheap dress) +  (Number of Expensive dresses X cost of  expensive dress)  =  $5250

x \times90 +y \times 140 = 5250=  $5250

It is given that the 20 more of the cheaper dresses than the expensive dresses is sold

So,

number of cheaper dress  =  20  +  number of expensive dress

x = 20 + y---------------------------------------(1)

(20+y) \times90 +y \times 140 = 5250 = 5250

(20 \times 90 +y\times 90) +y \times 140= 5250

1800 + 90y+ 140y = 5250

1800 + 230y = 5250

230y =5250 -1800

230y = 3450

y = \frac{3450}{230}

y = 15

Substituting y in (1)

x = 20 +15

x= 35

5 0
4 years ago
Which shows the correct solution to the inequality 7/10> 1 5/8+p
Bogdan [553]

Answer: \begin{bmatrix}\mathrm{Solution:}\:&\:p

Step-by-step explanation:

\frac{7}{10}>1\frac{5}{8}+p

\frac{7}{10}>\frac{13}{8}+p

\frac{13}{8}+p

\frac{13}{8}+p-\frac{13}{8}

p

3 0
3 years ago
Eight times the sum of a number and six is 80
Pachacha [2.7K]

8*(n+6)=80

distribute

8n+48 = 80

subtract 48 from each side

8n = 32

divide by 8

n=4

6 0
3 years ago
Read 2 more answers
Find the Area of the figure below, composed of a rectangle and a semicircle. Round to the nearest tenth place.
kap26 [50]

Answer: 68.1

Step-by-step explanation:

The area of a semi-circle is 1/2 the area of a full circle. The area of a full circle is pi*r^2. Therefore, the area of a semi-circle is:

Area=\pi r^2/2

Area=\pi (3)^2/2=9\pi /2

The area of a rectangle is the length multiplied by the width:

Area=l*w

Area=6*9=54

The net area is the sum of the rectangle and the semi-circle:

Area=(9\pi /2)+(54)=68.1

8 0
2 years ago
-45 divided by -9 .........
dmitriy555 [2]
5 because it’s a double negative which offsets the answer to be positive 5
7 0
3 years ago
Read 2 more answers
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