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maks197457 [2]
2 years ago
11

-1/5a+21=23 whats the answer

Mathematics
2 answers:
katrin [286]2 years ago
7 0
-a+105=115
-a= 115-110
-a=10
divide both sides by -1
answer : a=-10
sp2606 [1]2 years ago
6 0

Answer:

A =  -10

Step-by-step explanation:

Combine multiplied terms into a single fraction find common denominator etc etc.

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finlep [7]
X=9 which makes HI 2 units
8 0
3 years ago
whats another way to write (s-6)(s+1) when s represents the side of a square and the equation represents the area of a rectangle
viktelen [127]

The another way to write (s - 6)(s + 1) is s² - 5s - 6

Step-by-step explanation:

Let us revise how multiply two binomial (a + b)(x + y)

  • Multiply the 1st terms
  • Multiply the 2nd terms
  • Multiply the nears and extremes, where nears are the 2nd term of first bracket and 1st term in the second bracket, the extremes are the 1st term in the first bracket and the 2nd term in the second bracket
  • Add the like terms if necessary

∵ The area of the square = (s - 6)(s + 1)

- To find the another way multiply the two brackets

∵ s × s = s²

∵ -6 × 1 = -6

∵ -6 × s = - 6s ⇒ nears

∵ s × 1 = s ⇒ extremes

- The terms - 6s and s are like terms, then add them

∵ - 6s + s = - 5s

∴ (s - 6)(s + 1) = s² - 5s - 6

∴ The area of the square = s² - 5s - 6

The another way to write (s - 6)(s + 1) is s² - 5s - 6

Learn more:

You can learn more about the binomials in brainly.com/question/2334388

#LearnwithBrainly

8 0
3 years ago
I need help with this pls
PSYCHO15rus [73]

Answer:

make the picture more clear its hard to see.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the total surface area of the rectangular prism?​
bogdanovich [222]

Answer:

Total surface = 102.4 cm^2 (second answer in the list of options)

Step-by-step explanation:

Notice that we need to add the surface of 4 rectangles, two have smaller sizes than the other two. A pair of rectangles are 7.2 cm x 4 cm = 28.8 cm^2, while the other pair has 7.2 cm x 2 cm = 14.4 cm^2

There are also two equal bases each one of size 4 cm x 2 cm = 8 cm^2

Now we add two of each of the individual surfaces discussed above to complete the total surface area:

2 * 28.8 + 2 * 14.4 + 2 * 8 =  102.4 cm^2

which agrees with the second answer option provided.

3 0
3 years ago
Help me out please??
krek1111 [17]

Answer:

2x+23

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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