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ioda
3 years ago
7

Y = x + 2 y=-5/2x-5 please help

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
8 0

Answer:

Step-by-step explanation:

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??? Anyone know how to answer this question
True [87]
Answer: 35 additional teachers are needed

-------------------------------------------------
-------------------------------------------------

Explanation:

We have 2470 students and the ratio of students to teachers is 26:1. This means that for every teacher, there are 26 students. Put another way, we can set up this ratio

2470/x = 26/1

where x is the number of teachers. Cross multiply and solve for x

2470/x = 26/1
2470*1 = 26*x
2470 = 26x
26x = 2470
26x/26 = 2470/26
x = 95

So we have 95 teachers currently

-------------

Let y be the new number of teachers needed to bring the ratio down to 19:1

Using a similar idea as done above, we would have this ratio

2470/y = 19/1

Let's solve for y
2470/y = 19/1
2470*1 = 19*y
2470 = 19y
19y = 2470
19y/19 = 2470/19
y = 130

So we'll need 130 teachers to have the ratio be 19:1

The difference of the values is y - x = 130 - 95 = 35, which is the final answer. This is the additional amount of teachers needed.
5 0
3 years ago
Is 0.018 a reasonable answer for 1.8x100
Sloan [31]

Answer:

no

Step-by-step explanation:

1.8×100 would be 180 because you're moving the decimal place two to the right.

8 0
3 years ago
Read 2 more answers
Andrei's grandfather offered to give him a gift at 50% of the amount of money he saved in one year. Andrei saved $120 dollars. H
Dafna1 [17]

Answer:

$60

Step-by-step explanation:

$120/2(half) = $60

3 0
3 years ago
Read 2 more answers
What is the slope of the line that passes through the points (3,1) and (-2,5)?
meriva
Slope=(y1-y2)/(x1-x2)
(1 - 5)/(3 - -2)=(1 - 5)/(3 + 2)
-4/5
A is the answer
7 0
3 years ago
Read 2 more answers
I bought a box of granola bars at the store that has a volume of 210 cubic centimeters
Naya [18.7K]

Answer:

a and c

Step-by-step explanation:

The volume (V) of a cuboid is

V = lwh ( l is length, w is width, h is height )

The volume is given as 210 cm³

Check each of the dimensions given to determine which give the correct volume

a

V = 15 × 2 × 7 = 210 ← correct volume

b

V = 14 × 3 × 7 = 294 ← incorrect volume

c

V = 7 × 3 × 10 = 210 ← correct volume

Hence a and c  could be the dimensions of the box


6 0
3 years ago
Read 2 more answers
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