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3 years ago

2/3 of a class are girls.

Mathematics

2 answers:

Readme [11.4K]3 years ago

4 0

Answer:

a) 2:3

b) 1:3

Step-by-step explanation:

miv72 [106K]3 years ago

3 0

Answer:

Step-by-step explanation:

https://justmaths.co.uk/2015/07/23/new-gcse-error-intervals/2/3%20of%20a%20class%20are%20girls.%20w%20a)%20What%20is%20the%20ratio%20girls%20to%20boys%20in%20the%20class?%20Note:%20Give%20your%20answers%20in%20their%20simplest%20forms.%20b)%20What%20is%20the%20ratio%20boys%20to%20girls%20in%20the%20class?

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Convert the following into degree measure: 7pi/12

Alex787 [66]

Since we know that there are 180° in π radians, then, how many degrees are there in 7π/12 radians?

$\bf \begin{array}{ccll}
de grees&radians\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
180&\pi \\\\
d&\frac{7\pi }{12}
\end{array}\implies \cfrac{180}{d}=\cfrac{\quad \pi \quad }{\frac{7\pi }{12}}\implies \cfrac{180}{d}=\cfrac{\quad \frac{\pi}{1} \quad }{\frac{7\pi }{12}}
\\\\\\
\cfrac{180}{d}=\cfrac{\underline{\pi} }{1}\cdot \cfrac{12}{7\underline{\pi} }\implies \cfrac{180}{d}=\cfrac{12}{7}\implies \cfrac{180\cdot 7}{12}=d\implies 105=d$

4 0

3 years ago

What is the value for x (5x+15) (3x-3)

torisob [31]

Answer: 15x2(power)+30x-45

this problem can only be simplifyed.
I hope this helps you! have a great day!

5 0

4 years ago

Read 2 more answers

PLEASE HELP MEEEEEEEE I HAVE 15 MINUTES LEFT

Pavel [41]

THE ANSWER SHOULD BE C AND B

3 0

3 years ago

Find the value of a/b!? can I have help?<br>

MatroZZZ [7]

Answer:

1.5

Step-by-step explanation:

2.1/1.4 =1.5

(as the triangles are similar) i think this is the answer.

4 0

3 years ago

The sales of a certain product after an initial release can be found by the equation s=10√5t+15 where s represents the total sal

zalisa [80]

Answer:

About $78

Step-by-step explanation:

The company is not complete. The question is to estimate the sales 8 weeks after release. To do that, we will substitute t = 8 into the modeled function s=10√5t+15

s = 10√5(8) + 15

s = 10√40 + 15

s =10(6.32)+15

s = 63.2+15

s = 78.2

Hence the sales after 8weeks is about $78.

4 0

3 years ago