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3 years ago

Whats 9 plus 10 My calculator broke and i need help

Mathematics

1 answer:

luda_lava [24]3 years ago

5 0

Answer:

Step-by-step explanation:

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Alexei wants to hang a mirror in his boat and put a frame around it. The mirror and frame must have an area of 19.25 square feet

zhuklara [117]

Let

x---------> the thickness of the frame in feet

At-------> Area of the mirror and the frame in square feet

we know that

$At=19.25ft^{2}$ ------> equation $1$

$At=(3+2x)*(5+2x)\\ At=3*5+3*2x+5*2x+2x*2x\\ At=15+6x+10x+4x^{2} \\ At=4x^{2} +16x+15$ --------> equation $2$

equate equation $1$ and equation $2$

$19.25=4x^{2} +16x+15\\ 4x^{2} +16x+15-19.25=0\\ 4x^{2} +16x-4.25=0$

therefore

the answer is the option

$C. 4x2 + 16x - 4.25 = 0$

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3 years ago

Read 2 more answers

Pam and her brother both open savings accounts. Each begin with a balance of zero dollars. For every two dollars that Pam save i

dezoksy [38]

Answer:

Ratio [Pam to her brother] = 2:5

Step-by-step explanation:

Given:

Pam saves every two dollar

Her brother saves fives dollar (For every two dollar)

Find:

Ratio [Pam saving and his brothers saving]

Computation:

It is given that if Pam saves $2 her brother saves $5

So,

Ratio [Pam to her brother] = 2/5

Ratio [Pam to her brother] = 2:5

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3 years ago

a web music store offers two versions of a popular song. the size of the standard version is 2.9 megabytes (MB). the size of the

kenny6666 [7]

Answer:

280 downloads

Step-by-step explanation:

-let x denote the number of standard version downloads.

-Given that the high-quality version was downloaded four times as often as the standard version it is denoted as 4x

-This can then be expressed as:

$x(2.9)+4x(4.8)=6188\\\\2.9x+19.2x=6188\\\\22.10x=6188\\\\x=280$

Hence, the number of standard version downloads is 280

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3 years ago

Help plz I will giv brainliest if it's right

hjlf

Answer:

What does it say.

I can't see the photo at all !

Step-by-step explanation:

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3 years ago

An architect is drawing up plans for a house. The rectangular living room is 4 feet longer than it is wide. The

I am Lyosha [343]

Answer b

Step-by-step explanation:

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3 years ago