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Alenkasestr [34]
3 years ago
14

I Really Don't Get Ratio, Can I Have Some Help?

Mathematics
1 answer:
lutik1710 [3]3 years ago
3 0
Example:
If I give u a ratio of the number of teachers to students is 2:1 would mean that for every 2 teachers there is 1 student.

In question 10(a) the ratio of grey to black is 3:1 which means that the percentage would be 33%

In 10 (B) the ratio would be 6:4
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Daniel has $650 in his checking account. He would like to spend some of his money on a new Playstation 4 and a game. He wants to
d1i1m1o1n [39]

Answer:

The answer would be D t is less than or equal to 375

Step-by-step explanation:

Because he wants to save 275 and 275+375 is 650. so if he wants to save at least 275 he can only spend a max of 375.

3 0
3 years ago
A number divided by three less two is at most two
Marina CMI [18]

x ≤ 12

Solution:

Let us take the number be x.

A number : x

A number divided by three : $\frac{x}{3}

A number divided by three less two : $\frac{x}{3}-2

A number divided by three less two is at most two : $\frac{x}{3}-2\leq 2

Now, simplify the inequality,

$\Rightarrow\frac{x}{3}-2\leq 2

Add 2 on both sides of the inequality,

$\Rightarrow\frac{x}{3}-2+2\leq 2+2

$\Rightarrow\frac{x}{3}\leq 4

Multiply by 3 on both sides of the equation,

$\Rightarrow\frac{x}{3}\times3\leq 4\times3

$\Rightarrow x\leq 12

Hence x ≤ 12.

5 0
3 years ago
2m=-6n-5 literal equation
Bingel [31]

Answer:

read below

Step-by-step explanation:

Alright, archtan /  

tan

−

1

(

x

)

is the inverse of tangent. Tan is  

sin

cos

. Like the inverse of sin, the inverse of tan is also restricted to quadrants 1 and 4.

Knowing this we are solving for the inverse of tan -1. We are basically being asked the question what angle/radian does tan(-1) equal. Using the unit circle we can see that tan(1)= pi/4.

Since the "Odds and Evens Identity" states that tan(-x) = -tan(x). Tan(-1)= -pi/4.

Knowing that tan is negative in quadrants 2 and 4. the answer is in either of those two quadrants. BUT!!! since inverse of tan is restricted to quadrants 1 and 4 we are left with the only answer -pi/4.

the answer is m=-3n-5/2 or n=2m+5/6

8 0
3 years ago
What is 5(4x+3)= simplified​
cluponka [151]

5(4x+3)=0

20x+15=0

20x = -15

x =  \frac{ - 15}{20}

x =  \frac{ - 3}{4}

4 0
3 years ago
Read 2 more answers
Jim Tree will drive from his home in Jackson Heights to Jones City. The distance on the map measures 3 1/2 inches. The scale on
expeople1 [14]
Just multiply !!

so 1 inch = 5 miles
3.5 inch must be 3.5×5 = 17.5 miles

so the answer is 17.5 miles !!
7 0
3 years ago
Read 2 more answers
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