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GaryK [48]
3 years ago
8

??????????????????????????

Mathematics
2 answers:
solniwko [45]3 years ago
7 0

Answer:

  1. Seconds in second row: 48
  2. Glasses in third row: 11

Step-by-step explanation:

Answer for seconds in second row:

  1. Set up a proportion: \frac{5}{20} = \frac{12}{x}  
  2. Cross multiply, then divide: 20 × 12 = 240, 240 ÷ 5 = 48

Answer for glasses in third row:

  1. Set up a proportion: \frac{5}{20} = \frac{x}{44}  
  2. Cross multiply, then divide: 44 × 5 = 220, 220 ÷ 20 = 11

I hope this helps!

djyliett [7]3 years ago
5 0

Step-by-step explanation:

1 )48

2 )11

answer is this

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Solve the system of linear equations.
RoseWind [281]

Answer:

1. No solution

2. Infinite solutions

Step-by-step explanation:

1. To solve the system, set the equations equal to each other and solve for x.

2x - 5 = 2x + 7

-5 = 7

This is a false statement. This means there is no solution.

2. To solve the system, graph each equation.

y = -3/4 x - 5/2 has a y-intercept -5/2 and slope -3/4.

3x + 4y = -10 converts to y = -3/4x -5/2.

This graphs as the exact same line. This system has infinite solutions.

4 0
3 years ago
15Points!!<br> Factor completely.<br><br><br> 12x² +28x
Zigmanuir [339]

Answer:

4x(3x+7)

Step-by-step explanation:

12x^2+28x\\12xx+28x\\\\4\cdot \:3xx+4\cdot \:7x\\4x\left(3x+7\right)

4 0
3 years ago
2(3-x)-1.4(5-2x)=2x+5.3
Hitman42 [59]
I think the answer is : x = -5.25
7 0
2 years ago
Read 2 more answers
How do you find the quadratic equation for the roots 3 and 17?
Naily [24]
The roots are 3 and 17 so the distributed equation is

(x-3)(x-17)

distribute 

x²-3x-17x+51

x²-20x+51

I hope I've helped! 
6 0
3 years ago
Given the function f(x)=4x^8+7x^7+1x^6+1 What is the value of f(−2)?
qwelly [4]
<span> f(x)=4x^8+7x^7+1x^6+
</span>∴<span> f(-2)=4(-2)^8+7(-2)^7+1(-2)^6+1
</span>∴ <span>f(-2)=(4x256) + (7x-128) + (1x64) +1
</span>∴ <span>f(-2)=1024 - 896 + 64 +1
</span>∴ <span>f(-2)= 193</span>
7 0
4 years ago
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