3 years ago

If (x, 3.4) is a solution to the equation 3x – 5y = 55, what is the approximate value of x?

Mathematics

2 answers:

Whitepunk [10]3 years ago

7 0

The answer is 5(11+y)/3

ExtremeBDS [4]3 years ago

6 0

(x,y)
plug i 3.4 for y

3x-5(3.4)=55
3x-17=55
add 17 both sides
3x=72
divide both sides by 3
x=24

x=24
(24,3.4)

You might be interested in

Function f is shown on the graph

Natali [406]

Answer:

Option A, (-4, -1)

Hope this helps!

6 0

3 years ago

The price of a sandwich is $2.50 more than the price of a smoothie, which is d dollars. What does the expression d +25 represent

kow [346]

Answer: D represents the price of a sandwich and a smoothie

4 0

3 years ago

If David plays 3 tennis matches every week for 9 weeks, how many matches will he play altogether

kari74 [83]

If he plays 3 matches a week for 9 weeks, you have to multiply 3&9.
3*9=27
Daniel will have played 27 tennis matches by the end of the 9 weeks.
Hope this helps:)

5 0

3 years ago

Read 2 more answers

The diameter of a wheel of a car is 0.75 m. if the car travels at an average speed of 14 m/s, find the

raketka [301]

Step-by-step explanation:

Circumference of wheel = πd = 0.75πm.

How far the car travels per minute

= 60s * (14m/s) = 840m.

Hence number of revolutions per minute

= 840m / 0.75πm

= 356.507....

= 357. (nearest whole number)

6 0

3 years ago

X2 + 4x - 21 = 0 quadratic formula

Elena-2011 [213]

Answer:

Step-by-step explanation:

x2 +4x-21=0. solve for x

$x = \frac{7}{2}$

$x = 3 \frac{1}{2} \ x = 3.5$

6 0

3 years ago