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kvv77 [185]
2 years ago
6

A train goes at a constant speed. If it covers 150 miles in 2 1/2 hours,

Mathematics
1 answer:
ololo11 [35]2 years ago
8 0

Answer:

180 miles

Step-by-step explanation:

150/2.5 is 60; 60*3 is 180

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-4+0.8 is it rational or irrational and why​
Whitepunk [10]

Answer:

rational

Step-by-step explanation:

-4+0.8=-3.2

8 0
3 years ago
John has 300 watermelons. He sells 150. How many does he have?
oksian1 [2.3K]

Answer:

150

Step-by-step explanation:

300-150

6 0
3 years ago
I can’t explain look at picture
const2013 [10]

Answer:

x = 12.48

y = 13.22

Step-by-step explanation

Im not sure if its correct

10^2 + b^2 = 16^2

100 + b^2 = 256

b^2 = √156

b = 12.48

b= 12 ( If needed to round to the nearest whole number)

a^2 + 15^2 = 20^2

a^2 + 225 = 400

a^2 = √175

a = 13.22

a = 13 ( If needed to round to nearest whole number)

3 0
3 years ago
IaI − IbI + IcI , if a=−8; b=−5; c=1<br><br>pLEEEEEEZE hELP
yawa3891 [41]

Answer:

4

Step-by-step explanation:

to solve | a | - | b | + | c | we need to plug in the given values

a = -8

b = -5

c = 1

the | | bars mean absolute value which is the exact value a number is away from 0 on a number line. an absolute value has to be positive, not a negative, as you cant be negative spaces away from something. plugging in the values into the equation we have:

| -8 | - | -5 | + | 1 |

the absolute value of -8 is 8, as -8 is 8 units away from 0 on a number line

like wise with -5, the absolute value of -5 is 5, as -5 is 5 units away from 0 on a number line

1 is the absolute value of 1 as its 1 unit away from 0 on a number line

the new expression looks like the following:

8 - 5 + 1

now we just add/subtract

8 -5 = 3

3 + 1 = 4

the solution to this expression is 4

6 0
3 years ago
If y varies directly with x, find the value of y when x = 27 for the direct variation with the given information. y = 7 when x =
ElenaW [278]

Given:

y varies directly with x,

It is given that y = 7 when x = -9.

To find:

The value of y when x = 27 for the direct variation.

Solution:

It is given that y varies directly with x, so

y\propto x

y=kx             ...(i)

Where, k is the constant of proportionality.

It is given that y = 7 when x = -9. Putting these values in (i), we get

7=k(-9)

-\dfrac{7}{9}=k

Putting k=-\dfrac{7}{9} in (i), we get

y=-\dfrac{7}{9}x

Putting x=27,  we get

y=-\dfrac{7}{9}(27)

y=-21

Therefore, the required value is y=-21.

3 0
2 years ago
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