1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lina2011 [118]
3 years ago
6

Two customers went to the post office to buy postcards and large envelopes. Each postcard costs the same amount and each large e

nvelope costs the same amount.
● The first customer paid $12 for 14 postcards and 5 large envelopes.


● The second customer paid $24.80 for 10 postcards and 15 large envelopes.



What was the cost in dollars of each large envelope?




1. $1.42

2. $1.15

3. $0.63
Mathematics
1 answer:
anygoal [31]3 years ago
7 0

Answer:

The first one $1.42

Step-by-step explanation:

1.42x5=7.1 (cost of all envelopes)

12-7.1=4.9

4.9/14=0.35 (one postcard)

10 postcards= 3.5

1.42x15=21.3 (cost of all envelopes)

3.5+21.3=$24.80

You might be interested in
What is 98.38 divided by 59.6
shusha [124]

98.30/59.6 =

1.65067114

6 0
3 years ago
Write an equation for the description.
Ainat [17]

Answer:

She needs $30.

Step-by-step explanation:

170 minus 140 is 30.

6 0
3 years ago
7th grade math problem! Please help!
ANTONII [103]

Volume of the hexagonal prism = 1732.7772 ft³

Solution:

Height of the prism (H) = 15.4 ft

Side of the hexagon base (b) = 6.58 ft

Height from center to the side length (h) = 5.7 ft.

Let us first find the area of the base.

Area of the base (B) =  6\times\frac{1}{2}\  bh

                                 $=6\times\frac{1}{2}\times 6.58 \times 5.7

Area of the base (B) = 112.518 ft²

To find the volume of the hexagonal prism:

Volume of the hexagonal prism = Area of the base × Height

                                                     = 112.518 × 15.4

                                                     = 1732.7772 ft³

The volume of the hexagonal prism is about 1732.7772 ft³.

3 0
3 years ago
F(x) = 2x² + 8x Find f(-1)​
inysia [295]

Answer:

-6

Step-by-step explanation:

2(-1)^2 + 8*-1 = 2*1+8*-1=2-8=-6

8 0
3 years ago
Read 2 more answers
SU and VT are chords that intersect at point R.
vovikov84 [41]

Answer:

<h2>The length of the line segment VT is 13 units.</h2>

Step-by-step explanation:

We know that SU and VT are chords. If the intersect at point R, we can define the following proportion

\frac{RS}{RT} =\frac{RV}{RU}

Where

RS=SR=x+6\\RT=x+4\\VR=RV=x+1\\RU=x

Replacing all these expressions, we have

\frac{x+6}{x+4} =\frac{x+1}{x}

Solving for x, we have

x(x+6)=(x+4)(x+1)\\x^{2} +6x=x^{2} +x+4x+4\\6x-5x=4\\x=4

Now, notice that chord VT is form by the sum of RT and RV, so

VT=VR+RT\\VT=x+1+x+4\\VT=2x+5

Replacing the value of the variable

VT=2(4)+5\\VT=8+5\\VT=13

Therefore, the length of the line segment VT is 13 units.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Write the function y = 3(x - 1)2 + 2 in standard form
    8·1 answer
  • If x is 6, then 7x=<br> A. 13<br> B. 42<br> C. 42x<br> D. 76
    7·2 answers
  • There are 60 seconds in a minute and 60 minutes in an hour how many seconds are in one hour
    15·2 answers
  • Help? which one should I choose
    5·1 answer
  • If x= -3, which of the following values is positive? x3, x2, 2x or 1/x<br><br>Plssss answer​
    10·1 answer
  • 16
    15·1 answer
  • I need help please help me.
    15·1 answer
  • Horizontal translation 5 unitss left
    5·1 answer
  • Graph the following inequality. y ≤ 3x +5 Use the graphing tool to graph the inequality Click to enlarge graph​
    13·1 answer
  • Determine whether the relationship is an inverse variation or not. Explain.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!