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Vikki [24]
3 years ago
15

Kira solved the equation in the following way. 7 2 − 2x = 11 2 7 2 − 7 2 − 2x = 11 2 − 7 2 −2x ÷ −2 = 4 2 ÷ − 2 x = −1 Describe

the properties of equality that Kira used. The first step is to use the property of equality to combine the constant terms. The second step is to use the property of equality to isolate the variable.
Mathematics
2 answers:
vladimir2022 [97]3 years ago
7 0

Answer:

the first step is to use the

✔ Subtraction

property of equality to combine the constant terms.

The second step is to use the

✔ Division

property of equality to isolate the variable

Step-by-step explanation:

edge 20 20

Nat2105 [25]3 years ago
3 0

Answer:

B D

Step-by-step explanation:

just trust

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On every three hamburgers that McDonalds makes, they use 9 pickles. How many pickles would they use on 100 burgers?
SpyIntel [72]

Answer:

300 pickles

Step-by-step explanation:

9/3=3, 3*100=300

6 0
3 years ago
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Given that (x - 2) is a factor of this polynomial, use the Factor Theorem to find the value of a.
IceJOKER [234]
The factor theorem states that if (x-a) is a factor of P(x) the P(a) = 0  so we can write, for this polynomial:

2^(4) - 3(2)^3 + A(2)^2 - 6(2) + 14 = 0

16 - 24 + 4A - 12 + 14 = 0
4A =  -16+24 + 12 - 14 =  6
A = 6/4 = 1.5
8 0
4 years ago
If the mountain is 1,200 feet tall, find the length of the ski lift
Nina [5.8K]
The length of the sky lift is 3.387.05 ft
Step-by-step explanation;
By an online search, i found that the sky lift
rises at an angle of 20.75 degrees.
Then we can think on a triangle rectangle, such
that:
One cathetus is 1200ft, this is the opposite
cathetus to the angle of 20.75°
The length of the ski lift would be the
hypotenuse of this triangle rectangle.
Then we can use the relationship:
Sin(a) = opposite cathetus/hypoteuse.
such that:
a = 20.75°
opposite cathetus=1200ft
then:
sin(20.75°) = 1200ft/hypotenuse
hypotenuse =1200ft/sin(20.759) =3.387.05 ft
The length of the sky lift is 3.387.05 ft
7 0
3 years ago
Every that is fully readable
n200080 [17]
10)
60in=60in × (1ft/12in) = 5ft
30in= 30in × (1ft/12in) = 2.5ft
12in = 12in × (1ft/12in) = 1ft
answer is = 5ft × 2.5ft× 1ft =12.5 ft^3 = a

11)
dozen = 12 hammers
12 hammers = 20 pounds
therefore 1 hammer= 20/12 = 1.6666 lb

21 hammers ×1.666 = 35 = c

12)
convert qt to gal
600 gal × 4 qt/gal = 2400 qt

2400 qt ÷ 120 qt/min
=20 min = d

13)
Carla is 12
rob is 12+5= 17
cousin is 12-7 = 5

12+17+5= 34 =a

15)
convert 60ft into yards
60 ft × 0.333 yd/ft =20 yd

diameter = 20 yd

area of circle = (pi/4)×d^2
(pi/4)×20^2= 314.16 = b
8 0
4 years ago
HELP ME WITH THIS PROBLEM PLEASEEE!!!
serious [3.7K]

Answer:

Help me with my problem first

Step-by-step explanation:

:) I did nothing so if you report me it will be a fals report and I asked my question before you

5 0
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