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3 years ago

What is 2,5 and 1,1 in standard form

Mathematics

1 answer:

Nonamiya [84]3 years ago

5 0

Two five one one that is stander form

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There were 180 students in attendance at the dance. If there were 32 more boys than girls at the dance, how many girls and boys

babymother [125]

$\huge\boxed{\text{$74$ girls}}\ \huge\boxed{\text{$106$ boys}}$

Hey there! This situation can be modeled and solved using a system of equations. We'll use $b$ to represent the number of boys and $g$ to represent the number of girls.

$\displaystyle{\left \{ {{b+g&=180} \atop {b&=g+32} \right.}$

Since we know what $b$ equals, we can substitute it into the first equation.

$\begin{aligned}b+g&=180\\(g+32)+g&=180&&\smash{\Big|}&&\text{Substitute.}\\2g+32&=180&&\smash{\Big|}&&\text{Combine like terms.}\\2g&=148&&\smash{\Big|}&&\text{Subtract $32$ from both sides.}\\g&=74&&\smash{\Big|}&&\text{Divide both sides by $2$.}\end{aligned}$

Now that we know the number of girls, use the second equation to get the number of boys.

$\begin{aligned}b&=g+32\\&=74+32&&\smash{\Big|}&&\text{Substitute.}\\&=106&&\smash{\Big|}&&\text{Add.}\end{aligned}$

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3 years ago

(Geometry HELP) The perimeter of WXY is ___ cm?

Juli2301 [7.4K]

Calculate the perimeter of the smalll triangle and times two because both figures and similar and the scale factors seems to be 2.

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4 years ago

Solve: √81/100<br> Will mark brainliest for fastest and correct response.

gogolik [260]

Answer:

$\dfrac{9}{100}=0.09\ or\ \dfrac{9}{10}=0.9$

Step-by-step explanation:

$\sqrt{a}=b\iff b^2=a\ for\ a\geq0\ and\ b\geq0\\\\\text{We have}\ \sqrt{81}:\\\\\sqrt{81}=9\ because\ 9^2=81.\ \text{Therefore}\\\\\dfrac{\sqrt{81}}{100}=\dfrac{9}{100}\\\\\text{If is}\ \sqrt{\dfrac{81}{100}},\text{then:}\\\\ \text{Use}\ \sqrt{\dfrac{a}{b}}=\dfrac{\sqrt{a}}{\sqrt{b}}\\\\\sqrt{\dfrac{81}{100}}=\dfrac{\sqrt{81}}{\sqrt{100}}=\dfrac{9}{10}=0.9\\\\\sqrt{81}=9\ because\ 9^2=81\\\sqrt{100}=10\ because\ 10^2=100$

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3 years ago

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!

Snezhnost [94]

Yes there is a solution. but

5 0

4 years ago

A classroom has more boys than girls, and it has 8 girls. Furthermore, each student in the classroom has at least 2 pencils. Let

Vikki [24]

Answer:

Choices are:

p>30

p<30

p=30

not enough information to tell

Answer is p>30

Step-by-step explanation:

Since there are more boys than girls, there must be at least 9 boys. Plug into equation: (b+8) represents number of students. If they each have at least 2 pencils we would use 2(b+8). Plugging in 9 for the boys we have: 2(9+8)=?

2(17)=34. So with the minimum number of boys there would be at least 34 pencils, so the answer is p>30

3 0

3 years ago