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3 years ago

Plz help I'm just having a brain fart right now

Mathematics

1 answer:

Wittaler [7]3 years ago

4 0

Answer:

x=11

Step-by-step explanation:

For extra help the second answer is: 7a(3-a)

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Plz explain how do you know

Tamiku [17]

Answer:

Just say what you did in your math equation

4 0

3 years ago

Read 2 more answers

Katena32 [7]

Given that the two pentagons are similar figures, the area of the pool = 675 sq. m..

<h3>What is the Area of Similar Figures?</h3>

If two figures are similar to each other, then, the ratio of the square of their corresponding sides equals the ratio of their areas.

We are given that the pool and the park are similar to each other. The diagram given is missing, however, here's how to find the area of the pool:

If x is a side of the pool and y is the corresponding side length of the park, therefore:

area of pool/area of park = x²/y².

Plug in the values given, cross multiply and find the area of the pool.

For example, if 3 is a side of the pool = x

6 is corresponding side of the park = y

Area of park = 2,700 sq. m

Thus:

Area of pool/2,700 = 3²/6²

Area of pool/2,700 = 9/36

Area of pool = (9 × 2,700)/36

Area of pool = 675 sq. m.

Learn more about the areas of similar figure on:

brainly.com/question/11899908

6 0

3 years ago

What is 10.5 as a mixed number

NeTakaya

10 1/2

10.5 = 10 5/10

but 5/10 can be simplified to 1/2

the answer is 10 1/2

4 0

3 years ago

Read 2 more answers

areas of four triangles are 40 cm^2, 90 cm^2, 202.5 cm^2 and 455.6 cm^2 are continue in sequence. the enlargement factor is 1.5,

maw [93]

Answer:

9th Triangle

Step-by-step explanation:

Given the area of four triangles: $40 cm^2, 90 cm^2, 202.5 cm^2 \:and\: 455.6 cm^2$

If the Scale factor is 1.5.

This is a geometric sequence and the common ratio is 1.5 X 1.5.

Therefore, the area of any n triangle can be determined using the function:

$A(n)=40\cdot1.5^{2(n-1)}$

We want to determine which triangle has an area greater than $15000cm^2$ .

When A(n)=15000

$40\cdot1.5^{2(n-1)}>15000\\1.5^{2(n-1)}>\frac{15000}{40} \\1.5^{2(n-1)}>375\\\text{Change to Logarithm form}\\2(n-1)>Log_{1.5}375\\\text{Applying logarithm change of base to base 10 law}\\2(n-1)>\frac{Log 375}{Log 1.5} \\2n-2>14.62\\2n>14.62+2=16.62\\n>8.31$

Therefore, the 9th triangle has an area greater than $15000cm^2$ .

5 0

4 years ago

Combine and simplify these radicals.<br> √3-√16<br><br> A 3√4<br> B 3√16<br> C 16√3<br> D 4√3

Tom [10]

Answer:

A 3√4

Step-by-step explanation:

The 3 stays and 16 gives you 4 and 4 becomes positive

8 0

2 years ago

Plz help I'm just having a brain fart right now​

Plz help I'm just having a brain fart right now