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2 years ago

In the similar quadrilaterals below, what is the length of AB?

Mathematics

2 answers:

kvasek [131]2 years ago

7 0

The answer is A. The length of AB if 9 cm

Julli [10]2 years ago

6 0

9 cm. since the smaller quadrilateral is half the size of the larger one, all the measurements will be half the size as well.

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To earn money for a contest, the math team pays $40 for a box of spirit banners. They sell each banner for $3.50. Write an equat

ankoles [38]

Answer:

$3.5b - 40$ where $b$ is the amount of banners sold.

Step-by-step explanation:

We know the team has already spent $40, and they earn #3.5 per banner.

Hence, with $b$ representing the amount of banners sold, the equation is $3.5b - 40$

7 0

3 years ago

a 9ft ladder is placed 4.5 feet from the base of a wall. How high up will the ladder reach? Round to the nearest hundredth.

spin [16.1K]

Answer:

$\huge\boxed{7.79 \ \text{feet}}$

Step-by-step explanation:

We know that we have a 9 foot long ladder resting upon a wall, with an unknown height, but the ladder is 4.5 feet away from the wall.

This can be represented as a triangle, where x is the unknown side.

| \

x | \ 9

| \

|_____\

4.5

We can use The Pythagorean Theorem to find the value of x. The theorem states that $a^2+b^2=c^2$ , where a and b are the lengths of the legs and c is the length of the hypotenuse.

However, we already know the hypotenuse and one leg. Therefore we can substitute inside the equation to find the missing value.

$a^2 + 4.5^2 = 9^2\\\\a^2 + 20.25 = 81\\\\a^2 = 60.75\\\\a \approx 7.79$

Hope this helped!

7 0

2 years ago

there are 3 good guys and three bad guys on one side of a river full of piranhas and there is a canoe big enough for two people

labwork [276]

If there are 3 bad guys and 3 good guys then they don't out number the good guys.

4 0

2 years ago

Find the value of 4x if x/2=3

Doss [256]

Answer:

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

x/2 = 3

x = 3×2

x = 6

Therefore

4x = 4 × 6

4x = 24

4 0

2 years ago

Read 2 more answers

What is the scale factor that takes the large triangle to the small triangle?

Lerok [7]

Step-by-step explanation:

such a scale factor applies to all sides and lines.

we see that DE is 12 units, and AB is 4 units.

so,

12×f = 4

f = 4/12 = 1/3 is the scale factor

control : check the other side

FE = 6 units

6 × 1/3 = 2

so, the corresponding side in the small triangle must be 2 units long.

and indeed, CB is 2 units long. all correct.

5 0

2 years ago