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3 years ago

Simplify 7.5 + n + 9.63. 7.5n + 9.63 17.13n n + 17.13

Mathematics

2 answers:

olga nikolaevna [1]3 years ago

7 0

Answer:

The expression given in the question i.e 7.5 + n + 9.63 is equivalent to n + 17.13 .

Step-by-step explanation:

As given the expression given in the question be as follow .

= 7.5 + n + 9.63

Now simplify the above it can be written as .

= n + 7.5 + 9.63

= n + 17.13

Therefore the expression given in the question i.e 7.5 + n + 9.63 is equivalent to n + 17.13 .

PolarNik [594]3 years ago

3 0

7.5+n+9.63
(7.5+9.63)+n
(17.13)+n
the answer would be the third one listed, n+17.13
hope this helps!

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3 years ago

What is the area of this triangle? base = 5 mm Height = 6mm

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3 years ago

Read 2 more answers

I wiol mark you brainliest!!! Use the substitution method to solve the system of equations.

JulsSmile [24]

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Step-by-step explanation:

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y=5(6)-3 <------- mulitply 5 and 6

y=30-3 <---- subtracted

y= 27. <---- y value.

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3 years ago

Make and explain a prediction about the nature of the solution to the following system of equations, and then solve the system.

Dominik [7]

Answer:

(3,-4) and (-3,4)

Step-by-step explanation:

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$4x+3y=0$

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The second equation is a line which has slope $\frac{4}{3}$

So, for 4 unit change in y there will be 3 unit chang in x.

The circle has its center at the origin and the line passes through the orgin.

The line will intersect the circle at two points giving us two solutions

From the second equation we get

$y=-\frac{4}{3}x$

Applying in the second equation

$x^2+\left(-\frac{4}{3}x\right)^2=25\\\Rightarrow x^2+\frac{16}{9}x^2=25\\\Rightarrow \frac{9x^2+16x^2}{9}=25\\\Rightarrow 25x^2=225\\\Rightarrow x^2=\frac{225}{25}\\\Rightarrow x^2=9\\\Rightarrow x=\pm 3$

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$y=-\frac{4}{3}x\\\Rightarrow y=-\frac{4}{3}\times 3\\\Rightarrow y=-4$

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So, the points where the line and circle intersect are (3,-4) and (-3,4)

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3 years ago