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katrin [286]
3 years ago
11

4. Determine the following difference. (2x² + 3x - 10) - (x² - x + 111)  please explain

Mathematics
2 answers:
SIZIF [17.4K]3 years ago
8 0
Hi there! The answer is A.

(2x² + 3x - 10) - (x² - x + 111) 
Let's solve this problem step by step!

First work out the parenthesis. Because we multiply by negative 1, we mustn't forget to change the symbols in front of the factors.
2x² + 3x - 10 - x² + x - 111

Now rearrange our expression, in order to collect the terms later.
2x² - x² + x + 3x - 10 - 111

And finally collect the terms.
x² + 4x -121

The answer is A.
~ Hope this helps you!
hjlf3 years ago
6 0
Hi there!

Simplify th' expression :-

(2x² + 3x - 10) - (x² - x + 111)

⇒ 2x² + 3x - 10 - x² + x - 111

⇒ 2x² - x² + 3x + x - 10 - 111

⇒x² + 4x - 121

Hence,
Option A. x² + 4x - 121 is Correct

~ Hope it helps!
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Wewaii [24]

Answer:

8.9

Step-by-step explanation:

1. DE:BC=AD:AB

2. AD=AB+BD, but according to the conditions AB=5, then

AD=5+BD.

3. after the substitution DE=16; BC=9; AB=5 and AD=5+BD into the formula:

16:9=(5+BD):5;

\frac{16}{9} =\frac{BD+5}{5};

BD=80/9 - 5≈3.9.

4. if AD=AB+BD, then AD=5+3,9=8,9

8 0
3 years ago
Read 2 more answers
Harold Wagner pays a $325.00 premium annually. This represents 40% of the total premium. The rest of the premium is paid by his
tigry1 [53]

Answer:

a). The company's percentage=60%

b). The total premium=$812.50

c). The company's payment=$487.50

Step-by-step explanation:

a).

The total premium can be expressed as;

T=H+R

where;

T=proportion of total premium

H=proportion paid by Harold Wagner

R=remaining proportion

In our case;

T=100%

H=40%

R=r

replacing;

100%=40%+r

r=100%-40%

r=60%

The company's percentage=60%

b).

The total premium, if 40%=$325.00

Let total premium be=t

40% of t=325

(40/100)×t=325

0.4 t=325

t=325/0.4

t=$812.50

The total premium=$812.50

c).

The company's payment=60% of total premium

The company's payment=(60/100)×812.5

The company's payment=$487.50

5 0
4 years ago
This is so confusing
Gala2k [10]

5*9=45

3*9=27

45-27=8

9*2=18

Therfeore the answer is A.

4 0
3 years ago
Which of the following fractions is equivalent to 9/15?
creativ13 [48]

Answer:

B.) 36/60

Step-by-step explanation:

some

equivalent fractions of 9/15:

3/5 = 6/10 = 9/15 = 12/20 = 15/25 = 18/30 = 21/35 = 24/40 = 27/45 = 30/50 = 33/55 = 36/60

8 0
2 years ago
Read 2 more answers
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Elden [556K]

Answer:

6 weeks

Step-by-step explanation:

8 quizzes = 4 weeks

So 2 quizzes/week

It will take her 12/2 weeks (6) to finish 12 quizzes

-Chetan K

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