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Aloiza [94]
4 years ago
13

Given: AB = 3y - 1, BC = 7y, AC = 29 Prove: AB = 8

Mathematics
1 answer:
Kobotan [32]4 years ago
7 0
AB + BC = AC
3y - 1 + 7y = 29
10y - 1 = 29
10y = 29 + 1 = 30
y = 30/10 = 3

AB = 3(3) - 1 = 9 - 1 = 8
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Blaire walked around her garden in the morning and saw that 18 of her tomato plants had tomatoes ready to pick. If this was 90%
vredina [299]

Blaire has 20 tomato plants altogether.

Step-by-step explanation:

Given,

Tomatoes plants ready to pick = 18

This represents 90% of total tomato plants.

Let,

x be the original number of tomato plants.

90% of x = 18

\frac{90}{100}*x=18

0.9x=18

Dividing both sides by 0.9

\frac{0.9x}{0.9}=\frac{18}{0.9}

x=20

Blaire has 20 tomato plants altogether.

Keywords: percentage, division

Learn more about division at:

  • brainly.com/question/10666510
  • brainly.com/question/10699220

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The equation y=ax^2 describes a parabola. If the value of a is positive, which way does the parabola open?
Ivenika [448]
<h3>Answer:</h3>

A. Up

<h3>Step-by-step explanation:</h3>

Parabolas are graphs that make U-shapes and are formed from quadratic equations.

Vertical Parabolas

There are 2 different types of parabolas: vertical and horizontal.

  • Vertical parabolas have a vertical axis of symmetry. So, they open up or down.
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If the x-value is squared, then the parabola is vertical. So, this graph must open up or down.

Positive A-Value

The a-value is the coefficient before the squared term. In a vertical parabola, the graph opens up if the a-value is positive. On the other hand, the graph opens down when the a-value is negative.

In this case, the graph is a vertical parabola that opens up. This means that the range will have a minimum value but no maximum.

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Answer:

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Step-by-step explanation:

2:5:3.

caroline gets 12 so multiply the ratio by 6.

12:30:18

Krutika has 30, Natasha has 18.

30-18=12

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Hope this helps plz mark brainliest :D

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3 years ago
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