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Lemur [1.5K]
3 years ago
12

Which choice is the most efficient first step to solve this set of equations?

Mathematics
2 answers:
Nastasia [14]3 years ago
8 0

Answer:

x + 2x = 30 is the correct answer.

harina [27]3 years ago
3 0
2x + x + y = y + 30 I think.
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Tickets to the zoo cost $12 for adults and $8 for children. The school
larisa [96]

Answer:

Step-by-step explanation:

Given

240 = 12x + 8y

Required

Plot a graph

First, we need to determine the minimum and maximum values of x and y

For x:

Minimum = 0

For maximum; Let y = 0

240 = 12x + 8y

240 = 12x + 8 * 0

240 = 12x

Solve for x

x = 240/12

x = 20

For y:

Minimum = 0

For maximum; Let x = 0

240 = 12x + 8y

240 = 12 * 0 + 8 * y

240 = 8y

Solve for y

x = 240/8

x = 30

See Attachment for graph

8 0
3 years ago
A rope.Measure 60cm was divided into 2 groups . 1 was used to make a rectangle of length 12cm and breadth 6cm. And the other was
kicyunya [14]

Answer:

4cm

Step-by-step explanation:

Firstly, we need to know the perimeter of the rectangle so as to know the length used to make the rectangle. This is 2(l + b)

P = 2(12 + 6) = 2(18) = 36cm

The length remaining to make the hexagon would be 60 - 36 = 24cm

Now since the hexagon is regular, the length of each side would be 24/6 = 4cm

Note: hexagon is a polygon with 6 sides

4 0
3 years ago
Complete the proof given: AB x BE =CB x BD prove: triangle ABC triangle DBE
lesantik [10]

Answer:

Step-by-step explanation:

1. AB * BE = CB * BD ------------------- 1. GIVEN

2. CB/BE = AB/BD ------------------- 2. Property of cross multiplication

3. ∠ABC ≅ ∠DBE ------------------- 3. Vertical angles

4. ΔABC ~ ΔDBE ------------------- 4. SAS property of similarity

8 0
3 years ago
What is the value of x?
AlexFokin [52]

Answer:

x = 107

Step-by-step explanation:

The sum of the exterior angles of a polygon is 360

105 + 148 +x =360

Combine like terms

253 +x = 360

Subtract 253 from each side

253-253+x = 360-253

x = 107

3 0
3 years ago
An ice cream store charges 75 cents for each scoop of ice cream and 25 cents for each cone. How many scoops would be in one ice
Aliun [14]
There will be 4 scoops of ice cream
4 0
4 years ago
Read 2 more answers
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