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jasenka [17]
2 years ago
13

You can set up a proportion:

Mathematics
1 answer:
nadya68 [22]2 years ago
7 0

Answer:

15/30:2/30

15/30=2/30x

divide by 15/30

7.5 is x

Step-by-step explanation:

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Evaluate each value expression for the given value of x: 3x-13, x=6
Neporo4naja [7]

Answer:

30

Step-by-step explanation:

5 0
2 years ago
What is the product of -2.5 and 8.77
baherus [9]
21.925....................Maybe
4 0
3 years ago
Read 2 more answers
From triangle PQR is P = 90°, PQ = 15.5 dm and PR = 11,7 dm. Calculate QR in dm. Round to one decimal.
Irina18 [472]

Answer:

QR = 19.4

Step-by-step explanation:

Use Pythagoras because p = 90°

Qr is hypotenuse

; (15.5)² + (11.7)²

= 377.14

√377.14

= 19.42009

= 19.42

= 19.4

hope it helps ☺️

4 0
2 years ago
An automobile detailer can detail 20 cars in 10 hours. At this rate, how many cars can he detail in 1 hour?
trapecia [35]
20/10 is 2 so he can detail two cars an hour
5 0
3 years ago
Write an equation of the line that passes through point (-8, – 5) and has the slope m= - 1/4 <br>y=
zmey [24]

Answer:

y= -1/4x + 3

Step-by-step explanation:

y-y1 = m(x-x1)

(-8 {x1}, -5 {y1}, -1/4 [m] )

We'll then replace the letters with the available figures.

y-[-5] = -1/4 (x-[-8])

We are made to know that minus + minus= plus

Minus + plus= Minus

Minus x minus = plus

minus x plus = minus

Therefore, the mathematical setting of this question becomes,

y+5 = -1/4 (x+8)

Multiply everything in the bracket with the outside value

-1/4 x X = -1/4x

-1/4 x 8 = -2

The mathematical setting then becomes,

y+5 = -1/4x + -2 (<em>Note: plus + minus = minus</em>)

so, it becomes

y+5 = -1/4x - 2

The equation is supposed to look like this, y= mx + b

Therefore we add +5 to both sides to cancel out

 y+5 = -1/4x - 2

   +5            +5

+5 cancels out +5 which makes the setting,

y= -1/4x - 2 +5 (<em>-2+5 goes around to become 5-2= 3</em>)

The expression now looks like this

<u>y= -1/4x +3 which is the final answer!</u>

<u />y= -1/4x + 3

5 0
1 year ago
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