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frez [133]
3 years ago
11

Please try and help me with this question I need help

Mathematics
1 answer:
Umnica [9.8K]3 years ago
8 0
B) an=5^n−1
d) an=10^n−1
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Analyze the diagram below and complete the instructions that follow.
yuradex [85]
Answer:
D

Explanation: All triangles must equal to 180, so we can say that st=ut and that will give us 60 all we have to do now is add 120.
6 0
2 years ago
You are making 10 tons of concrete that is 37.9% cement by mixing a 25% cement mixture with a 68% cement mixture.
Mnenie [13.5K]
The 10 tons should have 37.9% cement.

Let the 25% mixture be x tons

Then the 68% mixture will be (10 -x) tons.

Using formula for mixtures:
Let p for percentage and w for weight in tons.

p₁w₁ + p₂w₂ = pw

25*x + 68*(10-x) = 37.9*10

25x + 680 - 68x = 379

680 - 43x = 379

680 - 379 = 43x

301 = 43x

43x = 301

x = 301/43

x = 7

Recall that x, was for the 25% mixture, 7 tons.

a) For the 68% mixture, = 10 - x = 10 -7 = 3 tons.

b) For the 25% mixture = x = 7 tons.  
6 0
3 years ago
Determine the slope of the line that contains the given points <br><br> J(-5, -2), K(5, −4)
Irina-Kira [14]

Answer:

-\frac15

Step-by-step explanation:

Hello!

We can utilize the slope formula to find the slope.

Slope Formula: S = \frac{y_2-y_1}{x_2-x_1}

Remember that a coordinate is written in the form (x,y)

<h3>Find the Slope</h3>
  • S = \frac{y_2-y_1}{x_2-x_1}
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  • S = \frac{-2}{10}
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4 0
2 years ago
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Barb solved the following equation: 4(3x – 12) = 5(2x + 6)
katrin2010 [14]

Answer:

4(3 * 39 – 12) = 5(2 * 39 + 6)

x = 39


Step-by-step explanation:

4(3x – 12) = 5(2x + 6)

(12x - 48) = (10x + 30)

12x - 10x = 30 + 48

2x = 78

2x/2 = x

78/2 = 39

x = 39

No Prob :)

5 0
3 years ago
Read 2 more answers
What is the minimum cuts<br> needed to cut a circle into 8<br> equal parts?
Gnom [1K]

What is the minimum cuts  needed to cut a circle into 8  equal parts ?

A : 4 cuts

7 0
3 years ago
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