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
lyudmila [28]
2 years ago
10

System OT W + b =13 6.5w + 2b = 57.5

Mathematics
1 answer:
mixer [17]2 years ago
6 0

Answer:   w = 7,  x = 6

Step-by-step explanation:  Solve by substitution

W + b = 13

rewrite as   b = 13 - w  and substitute that value for b in the second equation

6.5w + 2b = 57.5  Then solve for w

6.5w + 2(13-w) = 57.5 . Distribute

6.5w + 26 - 2w = 57.5 .  Subtract 26 from both sides. Combine like terms and simplify

6.5w - 2w = 57.5 - 26

4.5w = 31.5  Divide both sides by 4.65

w = 7 . Substitute 7 for w in the first equation and solve for b

7 + b = 13 . Subtract 7 from both sides

b = 6

You might be interested in
Which measurement could be a surface area measure?<br><br> 24 km2<br> 18 m3<br> 63 oz.<br> 12 mm
gulaghasi [49]
24km^2 is your answer because it’s squared
7 0
3 years ago
Beth’s father asked her to buy party favors for her little brother’s birthday party. Party hats cost $1.60 each, balloons cost $
Studentka2010 [4]
$36
I think
$0.89 rounds up to $1.00
$0.75 rounds up to $1.00
$1.60 rounds up to $2.00
then multiply each by 9 for the 9 children
9
9
18
then add together
9+9+18=36
5 0
3 years ago
An amusement park sells 5 bottles of water for every
77julia77 [94]

Answer:

8 bottles of juice

3 0
3 years ago
Read 2 more answers
Number 16 what is the answer
dimaraw [331]
Cos 45=7 under root 2 /AB
1 / Under root 2 = 7 under root 2 / AB
AB=14
Ans = 14(b)
4 0
3 years ago
Read 2 more answers
A newspaper advertisement offers a $6500 used car for nothing down and 36 easy monthly payments of
NNADVOKAT [17]

Using simple interest, it is found that:

  • The total amount paid was of $7,084.8.
  • The finance charge was of $584.8.
  • The simple interest rate was of 3%.

<h3>Simple Interest</h3>

Simple interest is used when there is a single compounding per time period.

The amount of interest after t years in is modeled by:

I = Prt

In which:

  • P is the initial amount.
  • r is the interest rate, as a decimal.

In this problem, the amount paid was of 36 monthly payments of

$196.80, hence:

36 x 196.80 = $7084.8.

The total amount paid was of $7,084.8.

The original price is of $6,500, hence the finance charge was of:

7084.8 - 6500 = $584.8.

For interest, we have that:

I = 584.8, P = 6500, t = 3, hence:

I = Prt

584.8 = 6500(3)r

r = \frac{584.8}{6500 \times 3}

r = 0.03

The simple interest rate was of 3%.

More can be learned about simple interest at brainly.com/question/25296782

3 0
2 years ago
Other questions:
  • The temperature has been going down at a constant rate. in 5 hours it went down 15 degrees. which expression best shows the temp
    9·2 answers
  • Calculate the value of<br>6+(12245 - 1)​
    15·2 answers
  • Help<br><br> With this question
    6·1 answer
  • What is 82% of 8? In proportions
    10·1 answer
  • After 3 hours, Ernie had travelled 195 miles. If he travels at a constant speed, how far will he have
    10·1 answer
  • Population density is the number of people per unit of area. The population density of a certain region is 65 people per square
    13·1 answer
  • Please answer asap!!!!<br><br><br> first answer will get brainliest
    11·2 answers
  • 10) Quantas combinações de duas cores podemos fazer com as cores verde, azul, amarelo,
    6·1 answer
  • Can yall help me with this plz i cant fail this class
    5·1 answer
  • You can drive 90 miles in 1/4 of a tank of gas in 1 hour.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!