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Dahasolnce [82]
3 years ago
7

Please help for 10 points and help with both questions please.

Mathematics
2 answers:
iragen [17]3 years ago
6 0
21) 18×.36=6.48
6.48+18.00= 24.48 (B)

22) 80×.10= 8.00
80-8.00=72.00
72×0.07=5.04
72.00+5.04= 77.04 (B)
DedPeter [7]3 years ago
3 0
Question 21 
Selling price = 18 + 18 x 36/100

Question 22

Discount price = 80 - 80x10/100

Selling price = discount price + discount price x 7/100
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Jenny says the two expressions 7a – 4 + 3a - 6 and 4a – 10 are<br> equivalent? Is she correct?
dusya [7]
Yes, substitute a=2.
14 - 4 + 6 - 6 = -2
8 - 10 = -2
5 0
3 years ago
Why is it important to calculate the distance between two points on a cartesian coordinate plane?
Gwar [14]

Answer:

Derived from the Pythagorean Theorem, the distance formula is used to find the distance between two points in the plane. The Pythagorean Theorem,

a

2

+

b

2

=

c

2

, is based on a right triangle where a and b are the lengths of the legs adjacent to the right angle, and c is the length of the hypotenuse. The relationship of sides

|

x

2

−

x

1

|

and

|

y

2

−

y

1

|

to side d is the same as that of sides a and b to side c. We use the absolute value symbol to indicate that the length is a positive number because the absolute value of any number is positive. (For example,

|

−

3

|

=

3

. ) The symbols

|

x

2

−

x

1

|

and

|

y

2

−

y

1

|

indicate that the lengths of the sides of the triangle are positive. To find the length c, take the square root of both sides of the Pythagorean Theorem.

c

2

=

a

2

+

b

2

→

c

=

√

a

2

+

b

2

It follows that the distance formula is given as

d

2

=

(

x

2

−

x

1

)

2

+

(

y

2

−

y

1

)

2

→

d

=

√

(

x

2

−

x

1

)

2

+

(

y

2

−

y

1

)

2

We do not have to use the absolute value symbols in this definition because any number squared is positive.

A GENERAL NOTE: THE DISTANCE FORMULA

Given endpoints

(

x

1

,

y

1

)

and

(

x

2

,

y

2

)

, the distance between two points is given by

d

=

√

(

x

2

−

x

1

)

2

+

(

y

2

−

y

1

)

2

Step-by-step explanation:

4 0
3 years ago
Box plots! pls help!
aliina [53]

Answer:

the answer is b i thinkk.

8 0
3 years ago
Read 2 more answers
The spinner shown is divided into congruent sections that are labeled from 1 through 7. If the spinner is spun one time, what is
adoni [48]

Answer:

3/7

Step-by-step explanation:

The number of possible results are;

1, 2 , 3 , 4 , 5, 6 , 7 = 7

odd numbers here are;

1, 3 , 5 and 7

non-odd numbers are 2, 4 and 6

So the section not labeled with an odd number is 3

Hence the probability here is that;

3/7

4 0
3 years ago
Read 2 more answers
Draw a picture first, then use the Pythagorean Theorem to solve. Round
zavuch27 [327]

Answer:

your answer would be 9.4

Step-by-step explanation:

you'd have to plug in the numbers in the equation.

8^2 + 5^2 = c^2

64 + 25 = c^2

89 = c^2 then you'd do the square root of 89 which will give you 9.4 when rounded to the nearest tenth.

8 0
3 years ago
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