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Bumek [7]
2 years ago
6

Simplify the expression: -2.3f+0.8f - 12-5

Mathematics
1 answer:
MaRussiya [10]2 years ago
8 0

Answer:

-1.5f - 17

Step-by-step explanation:

-2.3f + 0.8f - 12 - 5

= -1.5f - 17

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Solve the system using substitution. Check your solution.<br> 2x - y= 65<br> 5y = x
lyudmila [28]

Answer:

The solutions to the system of equations are:

x=\frac{325}{9},\:y=\frac{65}{9}

Step-by-step explanation:

Given the system of the equations

\begin{bmatrix}2x-y=65\\ 5y=x\end{bmatrix}

isolate 'x' for 2x-y

2x-y=65

Add y to both sides

2x-y+y=65+y

2x=65+y

Divide both sides by 2

\frac{2x}{2}=\frac{65}{2}+\frac{y}{2}

x=\frac{65+y}{2}

\mathrm{Subsititute\:}x=\frac{65+y}{2}

isolate 'y' for  5y=\frac{65+y}{2}

5y=\frac{65+y}{2}

10y=65+y

subtract y from both sides

10y-y=65+y-y

9y=65

Divide both sides by 9

\frac{9y}{9}=\frac{65}{9}

y=\frac{65}{9}

\mathrm{For\:}x=\frac{65+y}{2}

\mathrm{Subsititute\:}y=\frac{65}{9}

x=\frac{65+\frac{65}{9}}{2}

x=\frac{325}{9}

The solutions to the system of equations are:

x=\frac{325}{9},\:y=\frac{65}{9}

3 0
3 years ago
Whats the radical form of 4/-40
faltersainse [42]

Answer:

Step-by-step explanation:1

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3 years ago
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Aarav cleans 6 apartments in 2.5
tensa zangetsu [6.8K]
It will take 12.5 to finish 30 and I took 6x5 got 30 the I took 5x2.5 and got the answer
8 0
3 years ago
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Please help!
frosja888 [35]

a. The center of the circle will be the coordinate point of the marked point inside the circle.

center: (3,-5)

The radius is the distance between the center and any point on the circle.

radius: 4 units

b. standard form for circles: (x-h)²+(y-k)²=r² where (h,k) is the center

standard form: (x-3)²+(y+5)²=16

c. Simplify equation in standard form to get general form.

(x-3)²+(y+5)²=16

x²-6x+9+y²+10y+25=16

general form: x²+y²-6x+10y+18=0

Hope u find this useful!

7 0
3 years ago
What is the simplest form for 6-3 1/2
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Answer:

Step-by-step explanation:

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