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lisabon 2012 [21]
2 years ago
9

Multiply using the rule for the square of a binomial.

Mathematics
1 answer:
GalinKa [24]2 years ago
5 0
To solve:
(x-10)(x-10)

Answer: x^2-20x+100
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A 12 ft. ladder is being placed against a 10 ft.
RideAnS [48]

Answer:

Step-by-step explanation:

Height of wall = 10ft

Length of ladder = 12ft

Angle of elevation be x

Sin x = opp/hyp

Sin x = wall height/length of ladder

Sin x = 10/12

Sin x = 0.83

X = Sin-¹ (0.83)

X = 56.44°

7 0
2 years ago
The daughter is 36 years younger than her mother. How many years ago was the mother 5 times he daughters age, if she is 50 now?
Anni [7]

Answer:

5 years ago

Step-by-step explanation:

8 0
3 years ago
Two jet planes simultaneously started travelling in opposite directions from the same airport. Four hours later they were 3800 m
alexira [117]

Answer:

Step-by-step explanation:

let the speed of one plane=x

speed of other plane=x+80

time=4 hrs

then 4x+4(x+80)=3800

4x+4x+320=3800

8x=3800-320

or 8x=3480

x=435

speed of one plane=435 m/h

speed of other plane=435+80=515 m/h

2.

Let he walks x hrs

then he take a taxi for 2-x hrs

4x+(2-x)50=31

4x+100-50x=31

-46x=-69

x=\frac{-69}{-46}=\frac{3}{2}

so he walks 3/2 hrs=1.5 hrs

travels by taxi=2-1.5=0.5 hrs

distance traveled by taxi=0.5×50=25 miles

8 0
3 years ago
Lori is 6 years
Delicious77 [7]

Answer:

12:6

Step-by-step explanation:

6 times 2 because Lori is six and her cousin is twice her age (hope it helps)

7 0
2 years ago
If the m∠1=123° m ∠ 1 = 123 ° and m∠2= (2x+7)° m ∠ 2 = ( 2 x + 7 ) ° , determine the value of x that supports l∥m l ∥ m . Show y
Georgia [21]

Answer:

25

Step-by-step explanation:

Let us assume that m<1 nad m<2 are supplementary. Since the sum of supplementary angles is 180degrees, hence;

<1 + <2= 180

123+2x+7 = 180

130+2x = 180

2x = 180 - 130

2x = 50

x = 50/2

x = 25

Hence the value of x is 25

5 0
2 years ago
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