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2 years ago

Find the value of x, y, and z

Mathematics

1 answer:

kaheart [24]2 years ago

5 0

Answer:

y=40

x=59

z=81

Step-by-step explanation:

therfore..40+59+81=180

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E is the midpoint of BC. If BE = 50 and CE = 2x + 25, find the value of x.

andrew-mc [135]

Answer:

The value of $x$ is $\frac{25}{2}$ .

Step-by-step explanation:

From Analytical Geometry we get that ratio of BC to BE is:

$\frac{BC}{BE} = 2$ (From definition of midpoint)

$\frac{BE+CE}{BE} = 2$

$1 + \frac{CE}{BE} = 2$

$\frac{CE}{BE} = 1$

$CE = BE$

If we know that $BE = 50$ and $CE = 2\cdot x + 25$ , then, the equality above is expanded:

$2\cdot x +25 = 50$

$2\cdot x = 25$

$x = \frac{25}{2}$

The value of $x$ is $\frac{25}{2}$ .

5 0

2 years ago

Please help me with this problem

Reil [10]

1:150 = 3: x

3 x 150 = 450

p mark branlist

7 0

1 year ago

Please help !!!!! Explain to me and need answer quick

schepotkina [342]

Answer:

We can see that the denominators of both the numbers is not same

So in order to make it same for the both numbers, we will multiply the second number by 2/2 ,(which is basically 1 so it won't affect our calculations)

$\frac{11}{2^2 * 5^2}$ - $\frac{2}{2^2 * 5^2}$

So we will just subtract the numbers now

$\frac{9}{2^2 * 5^2}$ This is the answer

Kindly mark Brainly, Thanks

4 0

2 years ago

Here are the first four terms of a sequence.

Nataly_w [17]

Answer:

aₙ = 2n² + n + 1

Step-by-step explanation:

We observe that the difference of terms is 4, 7 and 15 and next level difference is 4. It means the sequence is quadratic.

We can compare this with simple quadratic sequence

1, 4, 9, 16

and find out that doubling each term gives us

2, 8, 18, 32

This is close to our sequence, write the terms as follows to find exact rule

The first term:

a₁ = 4 = 2*1² + 2 = 2*1² + 1 + 1

The second term

a₂ = 11 = 2*2² + 3 = 2*2² + 2 + 1

The third term:

a₃ = 22 = 2*3² + 4 = 2*3² + 3 + 1

The fourth term:

a₄ = 37 = 2*4² + 5 = 2*4² + 4 + 1

The nth term as per observation above is:

aₙ = 2n² + n + 1

8 0

2 years ago

Given that f(x)=2x/3 evaluate f^-1(6)

abruzzese [7]

Answer:

Step-by-step explanation:

we know by definition that

$f^{-1}(f(x))=x\\\\f^{-1}(\frac{2x}{3})=x\\\\f^{-1}(x)=ax\\\\f^{-1}(\frac{2x}{3})=a(\frac{2x}{3})=x\\\\f^{-1}(x)=\frac{3x}{2}$

so now we evaluate

$f^{-1}(6)=\frac{3*6}{2}\\\\=3*3\\\\f^{-1}(6)=9$

and if we want to do an extra step

$f^{-1}(f(6))=6\\\\f^{-1}(\frac{2*6}{3})=f^{-1}(4)=\frac{3*4}{2}=6$

which works.

4 0

2 years ago

Find the value of x, y, and z​

Find the value of x, y, and z