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
mylen [45]
3 years ago
8

Elena solved the equation 2(x – 9) = 10 In the following way. What mistake did she make?

Mathematics
2 answers:
dmitriy555 [2]3 years ago
7 0
She subtracted instead of adding.
2x-18=10
You add 18 to both sides
So it would be 2x=28
Then you divide 2 on both sides so x=14
bezimeni [28]3 years ago
4 0

Answer: Subtract 18 on both sides is wrong. Its supposed to be add 18 on both sides.

Step-by-step explanation:

You might be interested in
To make fruit punch for a party, we need 4 1⁄2 gallons of ginger ale, 1 gallon of strawberry juice, 2 3⁄4 gallons of frozen oran
lina2011 [118]

For this case we convert the mixed numbers to fractions:

4 \frac {1} {2} = \frac {2 * 4 + 1} {2} = \frac {9} {2}\\2 \frac {3} {4} = \frac {4 * 2 + 3} {4} = \frac {11} {4}

Now we add the fractions:

\frac{9} {2}+1+ \frac {11} {4} + \frac {1} {8} =

We find the least common multiple of the denominators. The l.c.m is 8, then we divide by each denominator and multiply the result by each numerator.

\frac {36 + 8 + 22 + 1} {8} =\\\frac {67} {8} =

8,375

Thus, the punch recipe implies 8.375 gallons. If we convert to a mixed number we have:

8 \frac {3} {8} gallons

Answer:

8 \frac {3} {8}gallons

4 0
3 years ago
In AABC, AC - BC. The length of AC is three times the length of AB. Find
Arlecino [84]

Answer:

i don't undertsand this question

5 0
3 years ago
In a bag, there are 25 marbles. 8 are red and the rest are green. If there are 100 marbles in. a bag, how many are red? *
Sophie [7]

Answer:

32 marbles are red.

Step-by-step explanation:

Think of a quarter, 4 of them equal a dollar.

25 x 4 = 100

So, you will multiply 8 by 4.

8 x 4 = 32

4 0
2 years ago
A cereal comes in three different package size what is the ratio of the cost of an 8 ounce box to a 16 ounce box of cereal
34kurt

Answer:

5-3 or 3-5

Step-by-step explanation:

8 0
3 years ago
the formula f=9/5c+32 can be used to convert between temperature in degrees Fahrenheit and temperature in degrees Celsius. Use t
Slav-nsk [51]

Answer:

95

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Andrea put 2 quart of water and 1/1/2 cups of lemon juice in a pitcher. How many total cups of liquid are in the pitcher
    7·1 answer
  • If One lap around the track equals one fourth of a mile. a horse ran a distance of 9 laps in 2 minutes 30 seconds. What is the h
    14·1 answer
  • Can u guys help if u help me I will help u
    6·1 answer
  • First president u.s.​
    14·2 answers
  • Solve for x in the equation x2 + 4x-4-8-
    7·1 answer
  • Transversal t cuts parallel lines a and bas shown in the diagram. Which equation is necessarily true?
    13·1 answer
  • Can u pls help me with this question asap ​
    13·1 answer
  • On the first two downs, a football team lost a yard and then lost 2 yards.
    7·1 answer
  • Explain and I’ll mark as brainliest too also worth 20 points
    6·2 answers
  • Using the tools in GeoGebra, measure and to confirm the results found in part C. Take a screenshot of your image showing the ang
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!