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
NeTakaya
3 years ago
5

Hello hope your day is well i really need help with this expand question 4(a+5)-2(a-5)

Mathematics
2 answers:
kvv77 [185]3 years ago
7 0

Answer:

2a + 30

Step-by-step explanation:

use the distributive property:

4<em>a</em> + 20- 2<em>a</em> + 10

then rearrange for like terms

4<em>a</em> - 2<em>a</em> + 20 + 10

then add it up

2<em>a </em>+ 30

BARSIC [14]3 years ago
6 0

Answer:

2a + 30

Step-by-step explanation:

break it down so it is 4(a+5)

then work out -2(a-5)

so 4 x a then 4 x 5 which gives 4a + 20

then -2 x a then -2 x -5 which gives -2a + 10

then when you have 4a + 20 -2a + 10

do 4a - 2a which is 2a

do 20 + 10 which is 30

so the answer comes to 2a + 30

if anything doesnt seem right just comment and i will correct

hope this helps :)

You might be interested in
-3.25,<br> The greater number is<br> .<br> The number farther from 0 is
astra-53 [7]
25 and the farthest is also 24
3 0
3 years ago
What is the domain of: -9(x-2)^2+116
krek1111 [17]
The domain is -2!!!!
5 0
3 years ago
Two pounds of grapes cost $6. How much does it cost for 5 pounds of grapes
Andreyy89

Answer:

if we take the total cost of the grapes, and divide by the number of pounds of grapes we can conclude that each pound of grapes costs $3. so 5 pounds of grapes multiplied by $3 per pound, gives us $15 for 5 pounds of grapes.

3 0
3 years ago
Read 2 more answers
-QUICK PLEASE-
Zepler [3.9K]

Answer:

Option B. 0.75 gallons is the right answer.

Step-by-step explanation:

Let the load of dishwasher used in house A = x gallons

Let the load of dishwasher used in house B is = y gallons

and similarly we assume for house C = z gallons

Now from the given question

On Friday amount of water used in all three houses = 17.5 gallons

From the table we will make the equation

x + 2y + 2z = 17.5-----(1)

For Saturday

2x + 3y + 4z = 31.5 ----(2)

For Sunday

2x + 2y + 3z = 24.75 -----(3)

By subtracting equation 3 from 2

y + z = 31.5 - 24.75 = 6.75 ------(4)

Equation (1) multiplied by 2 - equation (2)

2×(x + 2y + 2z) - (2x + 3y + 4z) = 17.5×2 - 31.5

y = 35 - 31.5 = 3.5

By putting y = 3.5 in the equation (4)

z = 6.75 - 3.5 = 3.25

By putting y = 3.5 and z = 3.25 in the equation (1)

x + 7 + 6.5 = 17.5

x = 17.5 - 13.5 = 4

Now the difference between load of dishwasher that uses least water and the most.

x - z = 4 - 3.25 = 0.75 gallons

Option B is the right answer.

6 0
3 years ago
35 birds to 45 birds?
olya-2409 [2.1K]
I'm not sure what your trying to ask is that the full question 

6 0
3 years ago
Read 2 more answers
Other questions:
  • Express the complex number in trigonometric form.<br><br> 2 - 2i
    15·2 answers
  • What is 0.306 in word form
    12·2 answers
  • Multiple Choice: Please select the best answer.
    10·1 answer
  • An athlete ran 1,200 laps around a track over a two month period. He ran 4 times the number of laps in the second month than he
    15·1 answer
  • A rectangular pool is 20 feet wide and 50 feet long. A deck used for sunning surrounds the pool. The deck is the same width all
    12·2 answers
  • Simplify each radical And show your work √72 <br>√20 <br>√42 <br>2√12<br> 3√75<br> -2√18​
    11·1 answer
  • Kevin has $25 . MP3 downloads cost $0.75 each . How many songs can he download and still have $13 left to spend
    8·1 answer
  • HELPPPPPP
    15·1 answer
  • A carpenter’s sketch of a room does not include a scale. She measures a wall that has been built and finds that it is 38.5 ft. l
    7·1 answer
  • Mikey has 32 Kit Kat bars and 24 Tootsie Rolls. He wants to give out bags of candy to his friends in his class. What is the GREA
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!