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Semenov [28]
3 years ago
5

Help please Solve 2x2 − 8x = −7

Mathematics
1 answer:
bazaltina [42]3 years ago
8 0
11 if not i’m so sorry
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(2.3)(-0.5) and show your work THNX!
mamaluj [8]
(2.3)(-5.0)
-(2.3x0.5)
=-1.15 or as a fraction -23/20

Hope this helps
8 0
3 years ago
Find the sum of 1st 18 terms of an AP whose nth term is 3-2n.
cricket20 [7]

Answer:

-288

Step-by-step explanation:

<h3>Given AP</h3>
  • t(n) = 3 - 2n

<u>To find,</u>

  • The sum of first 18 terms
<h3>Solution</h3>
  • Sn = 1/2n(t(1) + t(n))

<u>The first and 18th terms as per the formula</u>

  • t(1) = 3 - 2 = 1
  • t(18) = 3 - 18*2 = 3 - 36 = -33
  • S18 = 1/2*18(1 - 33) = 9*(-32) = -288

<u>Answer is</u> -288

3 0
3 years ago
thomas has 4 blocks colored blue,red,green and yellow. How many different ways can he combine them on a shelf?
puteri [66]

Answer: 24

Step-by-step explanation:

Take the factorial of that number.

4! = 4*3*2*1=24

8 0
4 years ago
What is 918.59 rounded in the ten place?
lbvjy [14]
920 
18 rounded is 20 as the second number is the ten
8 0
4 years ago
A patient drinks 5 12ounce cups of coffee daily. The doctor recommends cutting back 60%, how many ounces of coffee can the patie
maksim [4K]

The patient is recommended to take 24 ounces of coffee per day.

<u>Step-by-step explanation:</u>

Patient normal intake of coffee daily = 5 times 12 ounces

                                                          = 5 × 12 = 60 ounces

Doctor recommends to cut off 60 % of the normal intake of coffee.

And advised to take only 40 % of the daily intake of coffee.

So 60 % of 60 ounces can be calculated as,

$\frac{60 \times 60}{100}= 36 ounces

40 % of 60 ounces is 24 ounces.

So 60 - 36 = 24 ounces of coffee per day

6 0
3 years ago
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