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evablogger [386]
3 years ago
11

The total weight of three tables is 16.9 pounds. The first table is twice as heavy as the second table and the weight of the thi

rd table is 1/3 the weight of the second table. What is the weight of table one?

Mathematics
1 answer:
Degger [83]3 years ago
3 0
Refer to image for answer

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Help please!
Anna71 [15]

Answer:

y= -4x^2 + 15x - 14

Step-by-step explanation:

A parabola is always in the form y = ax^2 + bx + c.

Substitute each point to produce different equations:

-14 = 0a + 0b + c = c

so c = -14

-3 = a1^2 + b1 + c = a + b - 14

so a + b = 11

0 = a2^2 + b2 + c = 4a + 2b -14 = 0

so 4a + 2b = 14

if we double a + b = 11 we get 2a + 2b = 22

Subtract this from 4a + 2b = 14 and we get 2a = -8 so a= -4 and b = 11 - a = 15

We don't need to use the (3,5) points as we have all the information we need.

4 0
3 years ago
Read 2 more answers
|x-5|&lt;20<br> What is the solution
postnew [5]
Your solution would be x<25
7 0
3 years ago
Read 2 more answers
The ratio of the number of boy campers to the number of girl campers was 8:7. If there were a total of 195 campers, how many boy
kupik [55]
8x - amount of boys
7x- amount of girls 

8x + 7x = 195
 
15x= 195  ( divide by 15)

x= 13

8x = 8 x 13 = 104

7x = 7 x 13= 91 

there are 104 boys, and 91 girls.


4 0
3 years ago
MY LAST QUESTION PLEASE HURRY, SORRY FOR RUSHING BY THE WAY
77julia77 [94]

Answer:40

Step-by-step explanation:

dividing 1200 by 600 is 2

so you would do the same for 80

6 0
3 years ago
Consider the two expressions 4b(b+1) and (2b+7)(2b-8). Compare their values if b=-3, b=-2, and if b=10. Is it true that for an v
frutty [35]

Answer:

FIRST EXPRESSION:

-  If b=-3, the value of 4b(b+1) is  24

-  If b=-2, the value of 4b(b+1) is  8

- If b=10, the value of 4b(b+1) is  440

 SECOND EXPRESSION:

-  If b=-3, the value of (2b+7)(2b-8)) is  -14

-  If b=-2, the value of (2b+7)(2b-8)) is  -36

- If b=10, the value of (2b+7)(2b-8)) is  324

Yes, for any value of "b" the value of the first expression is greater than the value of the second expression.

Step-by-step explanation:

Substitute the given values of "b" into each expression and evaluate.

- For the first expression 4b(b+1), you get:

If b=-3 → 4(-3)(-3+1)=24

If b=-2 → 4(-2)(-2+1)=8

 If b=10 → 4(10)(10+1)=440

 - For the second expression (2b+7)(2b-8)), you get:

If b=-3 → (2(-3)+7)(2(-3)-8)=-14

If b=-2 → (2(-2)+7)(2(-2)-8)=-36

 If b=10 → (2(10)+7)(2(10)-8)=324

You can observe that for any value of "b" the value of the first expression is greater than the value of the second expression.

7 0
3 years ago
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