answer.
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
DENIUS [597]
2 years ago
7

8.9 – 1.4x + (–6.5x) + 3.4 simplify this expression

Mathematics
2 answers:
Monica [59]2 years ago
8 0

Answer:

12.3 - 7.9x

Step-by-step explanation:

I added the numbers without variables first then I added the numbers with variables:

8.9+3.4 = 12.3

-1.4x + -6.5x = -7.9x

MariettaO [177]2 years ago
4 0

Answer:

x = 1.6

Step-by-step explanation:

Simplify the expression

8.9 – 1.4x + (–6.5x) + 3.4

8.9 - 1.4x + (-6.5x) + 3.4

collect like terms

8.9 + 3.4 - 1.4x - 6.5x

12.3  - 7.9 x = 0

take 7.9x to the left side

12.3 = 7.9x

divide both sides by 7.9

x = 12.3/7.9

x = 1.55696202532

x = 1.6

You might be interested in
Una diseñadora de modas que confecciona trajes de noche, tarda 3 horas en cortar y 2 horas en coser cada vestido de fiesta. Para
ella [17]

For this case we define the following variables:

x: Number of party dresses

y: Number of suits

You have 30 hours per week to cut, that is, the first equation is given by:

3x + 3y = 30\\

It is also known that 25 hours per week are available for sewing, that is:

2x + 3y = 25\\

It has a system of two equations with two unknowns, solving we have:

3x + 3y = 30\\\\2x + 3y = 25\\

Multiplying the second equation by -1:

3x + 3y = 30\\\\-2x-3y = -25\\

Adding up:

x + 0 = 5\\\\x = 5\\

Substituting x in the first equation:

3 * 5 + 3y = 30\\\\15 + 3y = 30\\

Clearing and:

3y = 30-15\\\\3y = 15\\

y = \frac{15}{3}\\\\y = 5\\

Thus, per week, the designer can produce 5 party dresses and 5 suits working at her maximum capacity.

Answer:

5 Party dresses

5 Suits


5 0
1 year ago
Six friends each use a $2-off coupon to buy themselves a movie ticket. They spend a total of $42. What is the price of one movie
SIZIF [17.4K]

Answer:

The Answer is $9

Step-by-step explanation:

What i did was multiplied 7 times 6 and that equaled 42. They all used 2 dollar off coupons. You asked what was the price of one movie ticket without the coupon, so i added $2 to 7 and got $9

7 0
2 years ago
Read 2 more answers
A dime has the same value of 10 pennies. Marley brought 290 pennies to the bank. How many dimes did Marley get?
IrinaVladis [17]

For this question, we can simply divide the amount of pennies she has by 10. 290/10 = 29. So, Marley has 29 dimes.

3 0
1 year ago
There were 200 members at a skating club. After some new members went in, there were 256 members altogether at the skating club.
mojhsa [17]
If I think I’m understanding it, the new members out of the 200 original would be adding 28% to the mix
4 0
1 year ago
ali is cutting a circular pizza into serving sized sections he uses a long knife to be sure that he cut he makes in the pizza ar
erik [133]

Answer:

1. Ali makes three straight long cuts along the diameter of the pizza.

2. Ali makes two straight long cuts along the diameter of the pizza.

Step-by-step explanation:

5 0
1 year ago
Other questions:
  • Carlos invested part of $3,000 in a 10% certificate account and the rest in a 6% passbook account. The total annual interest fro
    12·1 answer
  • a ball is thrown straight up from the top of a tower that is 280 ft high with an initial velocity of 48 ft/s . the height of the
    14·2 answers
  • Determine whether each of these sets is the power set of a set, where a and b are distinct elements.
    7·1 answer
  • A marina is in the shape of a coordinate grid. Boat A is docked at (4.2, −2) and Boat B is docked at (−5.2, −2). The boats are _
    11·2 answers
  • A store sells 10-ounce bottles of apple juice for $0.40 each and 16-ounce bottles for $0.56 each. How much money can you save by
    5·1 answer
  • The area of a rectangle is 1,357 square feet. The length is 59 feet. What is the width?
    7·2 answers
  • What are the solutions of 3x2 + 14x + 16 = 0?
    6·2 answers
  • A research organization wanted to estimate the average number of hours a college student sleeps per night during the school year
    8·1 answer
  • Which function has a vertex on the y-axis?
    8·1 answer
  • (05.01)A company makes triangular plates for individual slices of pizza. For each plate, the base is 7 inches and the height is
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!