3 years ago

Answer this question to get marked as barinliest!!!!

Mathematics

1 answer:

Cerrena [4.2K]3 years ago

6 0

Answer:

Step-by-step explanation:

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A-B=56 A:B is equivalent to 9:2

Alexxx [7]

Answer:

A=72

B=18

Step-by-step explanation:

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3 years ago

7.75 in expanded form

Elina [12.6K]

Answer: 7+0.7+0.05

Since 7 is in the ones place it goes in front of the decimal. .7 is in the tenth place because it's behind the decimal. .05 is also behind the decimal so it's in the hundredths place.

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4 years ago

2. Suppose (220)_b and (251)_b are the squares of consecutive integers. Determine b.

Andrei [34K]

Let $x$ and $x+1$ be these consecutive integers. For some base $b$ , we can write

$(x_{10})^2=220_b=2b^2+2b$

$((x+1)_{10})^2=251_b=2b^2+5b+1$

$x^2=2b^2+2b$

then

$x^2+1=2b^2+2b+1$

Now,

$x^2+2x+1=2b^2+5b+1$

$2x+2b^2+2b+1=2b^2+5b+1$

$\implies2x=3b$

Squaring both sides gives

$4x^2=9b^2$

and so

$4(2b^2+2b)=9b^2$

$\implies8b^2+8b=9b^2$

$\implies b^2-8b=0\implies\boxed{b=8}$

(because the base has to be non-zero)

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3 years ago

Please help me in this it's similar figures assessment

OLEGan [10]

Answer:

Step-by-step explanation:

the triangles are similar so the sides are in proportion

(x/10)=(12/6)

6x=10*12

x=10*12/6=20

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3 years ago

ASAP ASAP HELP MARK AS BRAINLIEST

Anna007 [38]

Alright, imma help you. Imma work on it on a piece of paper. :D

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3 years ago

Read 2 more answers