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
Mekhanik [1.2K]
2 years ago
11

Bettina’s age is three times Melvina’s age. If 20 is added to Melvina’s age and 20 is subtracted from Bettina’s age, their ages

will be equal. How old is each now?
Mathematics
2 answers:
koban [17]2 years ago
8 0
<span>Melvina's age is = x, Bettina's age is = 3x the equation is x + 20 = 3x - 20 subtract 3x from both sides -(3x) + x +20 = 3x - 20 - (3x) -2x + 20 = -20 subtract 20 from both sides -2x + 20 - (20) = -20 - (20) -2x = - 40 divide both sides by -2 (-2x)/-2 = (-40)/-2 x = 20 Melvinas age is 20 and Bettinas age is 60</span>
Deffense [45]2 years ago
4 0

Answer:

bettina=60 melvina 20

Step-by-step explanation:

guess and check:) try it, it really works!

You might be interested in
HELP ME PLEASE I WILL MARK YOU AS A BRAINLIEST!!!
Ymorist [56]
You add all the like terms together to get your final answer
5 0
3 years ago
Bryce has 220 feet of fencing that will enclosure a rectangular corral. One side of the corral will be 48 feet long. What will b
Gala2k [10]

Answer:

10560 square feet

Step-by-step explanation:

If 2 sides are 48 feet, then we are left with

220-2*48=124 feet for the remaining side pieces.

\frac{124}{2} =62 feet.

So our dimensions must be 48 x 62.

This gives us an area of

220*48=10560ft^{2}

6 0
3 years ago
Mr. Crow, the head groundskeeper at High Tech Middle School, mows the lawn along the side of the gym. The lawn is rectangular, a
Bogdan [553]

Answer:

Dimensions, Length = 85 feet and Width = 40 feet

Area of lawn = 3400 feet^2

Step-by-step explanation:

Given: Lawn is rectangular in shape

          Length of lawn is 5 feet more than twice its breath/width

           Perimeter of Lawn = 250 feet

To find: (a) Length and width of lawn

             (b) Area of Lawn

First let the a variable for width/breadth. Say, Width = b.

So, the length of lawn = 2b + 5

Perimeter of Rectangle = 2 × ( length + width )

Now, substitue given values in this formula

∴ Perimeter of Lawn = 2 × ( 2b + 5 + b )

250 = 2\times{(2b+b+5)}\\250= 2\times{(3b+5)}\\3b+5 = \frac{250}{2}\\3b = 125 -5\\3b = 120\\b=\frac{120}{3}\\b=40

∴width = 40 feet

⇒ length = 85 feet

Now we find are of lawn using formula of area of rectangle

Area of lawn = length × width

                     = 85 × 40

                     = 3400 feet^2

Dimensions, Length = 85 feet and Width = 40 feet

Area of lawn = 3400 feet^2

7 0
3 years ago
How many 4 digit codes are possible if the first digit cannot be 0 and digits can be repeated?
bezimeni [28]

Answer: 9,000

Step-by-step explanation: there are 9 number options for the first digit and 10 for the other 3, so 9x10x10x10=9000

4 0
3 years ago
Determine if a slope of two consecutive sides are parallel or neither? ​
inessss [21]

Answer:

No

Step-by-step explanation:

Two consecutive sides means that the two sides are connected in a shape by a vertex. If the sides were parallel, they would have to be right on top of each other, so two consecutive sides cannot be parallel.

3 0
3 years ago
Other questions:
  • Identify the properties<br><br> 5+(2+7)=(5+2) +7<br> ^2 + ( + ) = ^2+ ( + )<br> h+0=h
    6·1 answer
  • Can anyone factor 8x^2 + 10x -25? Please Help!
    13·2 answers
  • Jojo likes to paint. She estimates the number of paintings she completes using the function P of w equals two thirds times w min
    5·2 answers
  • A number is less than twelve
    6·2 answers
  • Help me ASAP this is important
    5·1 answer
  • Can we<br> multiply these two monomials? (4x^2)(-2b^3a)
    10·1 answer
  • Solve this and whoever is right I'll mark if I can remeber
    7·2 answers
  • If anyone can answer I will give brainleiest ​
    14·2 answers
  • Hich pairs of fractions include a fraction equivalent to 12 and a fraction equivalent to 25? Select each correct answer. 510 and
    11·1 answer
  • The table compares actual lengths in a room to lengths in a blueprint of the room.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!