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N76 [4]
2 years ago
5

How many match sticks will be in the 8th picture?​

Mathematics
1 answer:
melomori [17]2 years ago
5 0
Hello again. :)

Answer: 33 match sticks

From the first picture, we are given 5 match sticks.

From the second picture, we are given 9 match sticks. The difference between the match sticks is 4.

From the third picture, we are given 13 match sticks. The difference between the match sticks is again 4.

If each image increases the number of match sticks by 4, then the fourth image must have (13 + 4) = 17 match sticks.
The fifth image must have (17 + 4) = 21 match sticks.
The sixth image must have (21 + 4) = 25 match sticks.
The seventh image must have (25 + 4) = 29 match sticks.
And the eighth image must have (29 + 4) = 33 match sticks
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Match each quadratic graph to its respective function
Anna11 [10]

Answer:

f(x) = (x - 3)(x + 1) → Corresponds with the first (raised higher ) ∪ shaped graph

f(x) = -2(x - 1)((x + 3) → Corresponds with the ∩ shaped graph

f(x) = 0.5(x - 6)((x + 2) → Corresponds with the second (lower) ∪ shaped graph

Step-by-step explanation:

For the function f(x) = (x - 3)(x + 1)

We have;

When x = 0, y = -3

When y = 0 x = 3 or -1

Comparing with the graphs, it best suits the first ∪ shaped graph  that rises here than the other ∪ shaped graph

For the function;

f(x) = -2(x - 1)((x + 3)

When x = 0, y = 6

When y = 0, x = 1 or -3

Which corresponds with the ∩ shaped graph

For the function;

f(x) = 2(x + 6)((x - 2)

When x = 0, y = -24

When y = 0, x = -6 or 2

Graph not included

For the function;

f(x) = 0.5(x - 6)((x + 2)

When x = 0, y = -6

When y = 0, x = 6 or -2

Which best suits the second ∪ shaped graph  that is lower than the other (first) ∪ shaped graph

For the function;

f(x) = 0.5(x + 6)((x - 2)

When x = 0, y = -6

When y = 0, x = -6 or 2

Graph not included

For the function;

f(x) = (x + 3)((x - 1)

When x = 0, y = -3

When y = 0, x = -3 or 1

Graph not included

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All numbers less than or equal to 22
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Answer:

x ≤ 22

Step-by-step explanation:

≤ means less than or equal to

≥ means greater than or equal to

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Help me solve this! Can’t figure out how to set up the equation.
Katarina [22]

Answer: GF = 7. Answer choice C

Step-by-step explanation:

The triangles are similar, meaning their angles and sides are proportional. You can use ratios to solve this. Find out what all the sides are. I used variables to represent the side lengths because we don’t know how long they are.

Step 1) Find side IG. Because we don’t know it, we can just use a variable. I used “y”.

Step 2) Find side GH. GH is the same length as IG, so we can use the same variable.

Step 3) find side IH by adding IG to GH. This gives us y + y, which equals 2y. We can label side IH with 2y.

Step 4) find side IF. I used the variable “a” because we don’t know side IF. Side FJ is the same length as IF, so we can label it “a” too.

Step 5) find side IJ.

IJ is IF + FJ.

IF = a. FJ = a.

So IJ = a + a. IJ = 2a.

Now we know the all the sides of both triangles.

Step 6) set up fractions of the sides of the triangles. Put a side from triangle IHJ in the numerator and a side from triangle IGF on the denominator. You have to match up the sides, though.

Side IH should go over IG. IJ/IF. HJ/GF

IH/IG = 2y/y

IJ/IF = 2a/a

HJ/GF = (4x-2)/(x + 3)

Step 7) make an equation if these fractions. They are all equal to each other.

2y/y = 2a/a = (4x-2)/(x + 3)

Step 8) simplify the fractions

2 = 2 = (4x-2)/(x+3)

FYI you don’t have to write 2=2, you can just write one 2. So it would be: 2 = (4x-2)/(x+3)

Step 9) factor (4x-2)

4x and -2 are both divisible by 2, so we can factor out 2.

This gives us: 2(2x-1)

We can’t factor (x+3).

Now the fraction is: 2(2x-1)/(x+3)

Step 10) rewrite the equation

2(2x-1)/(x+3) = 2

Step 11) Solve this equation.

You will end up with: x = 4

Step 12) Find side GF

GF = x + 3

Plug in 4 for x (because x = 4)

GF = 4 + 3

GF = 7

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