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damaskus [11]
3 years ago
6

9. A line passes through (2, –1) and (8, 4). a. Write an equation for the line in point-slope form. b. Rewrite the equation in s

tandard form using integers.
Mathematics
1 answer:
babunello [35]3 years ago
8 0

Answer:

Step-by-step explanation:

(4+1)/(8-2)= 5/6

y + 1 = 5/6(x - 2)

y + 1 = 5/6x - 5/3

y + 3/3 = 5/6x - 5/3

y = 5/6x - 8/3

6(y = 5/6x - 8/3)

6y = 5x - 16

-5x + 6y = -16

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There are 24 boys and 16 girls on the playground. What is the ratio of boys to total number of children on the playground?​
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I need help with this!
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Answer:

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Step-by-step explanation:

Let's solve your equation step-by-step.

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For concreatting a tower cement, sand, stones are in the ratio 1:2:4 For 144kg sand.. What amount of cement is required?
Verdich [7]

Answer:

72 kg

Step-by-step explanation:

For concreatting a tower cement, sand, stones are in the ratio 1:2:4 For 144kg sand.. What amount of cement is required?

We are given the ratio

cement: sand:stones

= 1:2:4

The sum of proportion =

1 + 2 + 4 = 7

We are given the kg of sand = 144kg

Step 1

We find the total kg of cement, sand and stones = x

Using the proportion of sand,

2/7 of x = 144kg

2/7 × x = 144kg

2x/7 = 144kg

Cross Multiply

2x = 7 × 144kg

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Therefore the total kg of cement, sand and stone = 504kg

Step 2

The amount of cement required is calculated as:

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Therefore, 72kg of cement is required.

4 0
3 years ago
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