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myrzilka [38]
3 years ago
10

I need help with this one too. X=-1 and y=2; evaluate 10x-3+2xy

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
7 0

Answer:

-17

Step-by-step explanation:

plug in x and y

10(-1)-3+2(-1)(2)

10(-1)= -10

2(-1)(2)= -4

-10-3-4

10+3+4= 17

don't forget the negative -17

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I need a answer asap Please!!
Ganezh [65]

Answer:

The ordered pairs (3 , 6) , (5 , 10) show a proportional relationship ⇒ last answer

Step-by-step explanation:

* Lets explain how to sole the problem

- Proportional relationship describes a simple relation between

 two variables

- In direct proportion if one variable increases, then the other variable

 increases and if one variable decreases, then the other variable

 decreases

- In inverse proportion if one variable increases, then the other variable

 decreases and if one variable decreases, then the other variable

 increases

- The ratio between the two variables is always constant

- Ex: If x and y are in direct proportion, then x = ky, where k

 is constant

 If x and y in inverse proportion, then x = k/y, where k is constant

* Lets solve the problem

# Last table

∵ x = 3 and y = 6

∴ x/y = 3/6 = 1/2

∵ x = 5 and y = 10

∴ x/y = 5/10 = 1/2

∵ 1/2 is constant

∵ x/y = constant

∴ x and y are proportion

* The ordered pairs (3 , 6) , (5 , 10) show a proportional relationship

7 0
3 years ago
The square of Mark's age 3 years ago is 6 times the age he will be in 9 years. What is his age now?
Lubov Fominskaja [6]

Answer:

Age= 15

Step-by-step explanation:

Let a be for age at the moment

(a-3)^2 =6(a+9)

a^2-6a+9=6a+54

a^2-12a-45

(a-15)(a+3)

a=15 or a=-3

Age cannot be negative (-)

Therefore

Age =15

3 0
3 years ago
Read 2 more answers
Zorona weighs 92 pounds. Her weight is 6 pounds more than half of her father’s weight. How much does her father way?
mihalych1998 [28]

Answer:

Zorona's dad wieghs 40 pounds

Step-by-step explanation:

92 ÷ 2 = 46

46 - 6 = 40

hope this helps!

6 0
3 years ago
Lydia spent 4/5 of her money on a mobile phone and 2/3 of the remaining amount on a bag. She had $60 left. How much more money d
KengaRu [80]
The answer is 600 because 1 out 3 is 60 so to find the bag multiply by two while to find 1 out 5 of her monet take 60 times 3 which is 180. 180 times 4 is the money she spent on her mobile phone so take the money spent on her mobile phone(720)minus the amount of money spent on the bag(120)
5 0
3 years ago
The vertex angle of isosceles triangle is 110 degrees. what are the measures of the base angles
dalvyx [7]

Answer:

35°

Step-by-step explanation:

The base angles of an isosceles triangle are congruent , then

base angles = \frac{180-110}{2} = \frac{70}{2} = 35°

3 0
2 years ago
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