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coldgirl [10]
3 years ago
5

Negative 4.2x+31.5=negative 65.1

Mathematics
2 answers:
Rasek [7]3 years ago
7 0
It is a linear simple equation for one unknown, lets solve it!
-4.2x + 31.5 = -65.1
we can easily get rid of decimals if we multiply the whole equation times 10:
<span>-42x + 315 = -651
</span>-42x = -651 - 315 = -966
x = 966/42
x = 23
that is the solution
Deffense [45]3 years ago
6 0

Answer:

its option A in edg 2020

Step-by-step explanation:

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$600 , 8% , 1 month find the simple interest
Vlad [161]

Answer:

$4

Step-by-step explanation:

Simple interest = Principal *rate *time

S.I = P*r*t

Principal ; p = $600

rate ; r = 8% or 0.08 as a decimal

time; t = 1 month , however, convert this to years by dividing by 12;

t = 1 / 12

Next, plug in the numbers into the formula;

S.I = 600 *0.08*\frac{1}{12}

S.I = 4

Therefore simple interest in 1 month becomes $4

7 0
3 years ago
Preform the indicated operation (-10) - (-4)
hammer [34]

Answer:

-6

Step-by-step explanation:

since the negative 4 is being subtracted it is turned into a positive and then you must do -10 + 4 which equals -6

6 0
3 years ago
The length of a rectangle is 9 cm more than its
arlik [135]

= 4 = x²

x = Answer: Length= 11 , Brteadth = 2

Step-by-step explanation: Let the breadth of the rectangle be x

length = 9 + x

area = 36 cm²

A.T.Q

36cm² = 9x*x

36 = 9x²

36/9 = 4 = x²

x = root of 4

x= 2

Therefore , breadth of rectangle is 3cm and length is 12 cm

verification:

l*b = 12*3 = 36cm²

6 0
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The quantity of oxygen that can dissolve in water depends on the temperature of the water. (So thermal pollution influences the
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