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Maslowich
3 years ago
12

-8 + 2x + 17 – 9x + 20=??

Mathematics
1 answer:
Ugo [173]3 years ago
4 0

Answer:

- 8 + 2x + 17 - 9x + 20 \\  \\  - 7x + 29

I hope I helped you^_^

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Simplify the expression and find its value when a = 5 and b = -3 .
kenny6666 [7]

Answer:

\sf\longmapsto \: 38

Step by step explanation:

\sf\longmapsto \:  2a² + 2ab +3-ab

\sf\longmapsto \:  2a² + 3 + ab (2-1)

\sf\longmapsto \: 2a² + 3 + ab (1)

\sf\longmapsto \:  2a² + 3 + ab

\sf\longmapsto \:  2a² + ab + 3

  • Putting a = 5 b = - 3

\sf\longmapsto \: 2(5) {}^{2}  + (5) (-3) +3

\sf\longmapsto \:  2 (25) - 15 + 3

\sf\longmapsto \: 50 - 12

\sf\longmapsto \: 38

7 0
3 years ago
Read 2 more answers
Marco states that 7.696696669 is a rational number because it is a repeating decimal. is he correct
DochEvi [55]

Hello there! And welcome to brainly . com! Your number one asking and answering site.

Answer: No.

Why?

The said decimal is a string of numbers, but does not have the same number repeated over and over again, nor does it have a triple dot after it. Thus, it is not repeating.

Hope this helped you, and have a great day! ♥

7 0
4 years ago
Read 2 more answers
The inequality below is equivalent to which of the following
vova2212 [387]
Your answer will be C. :)
7 0
3 years ago
(a) Omar changed 800 rands into dollars when the rate was $1 = 6.25 rands.
fenix001 [56]

Answer:$128

Step-by-step explanation:

If $1=6.25 rands then we must divide 800 by 6.25

5 0
3 years ago
Find an equation of the plane tangent to the following surface at the given point.z equals tangent Superscript negative 1 Baseli
Sergeeva-Olga [200]

Let <em>f(x</em>, <em>y</em>, <em>z)</em> = <em>z</em> - arctan(<em>x y</em>). Compute the gradient of <em>f</em> at the point (0, 3, 0):

∇ <em>f(x</em>, <em>y</em>, <em>z)</em> = (-<em>y</em> / (1 + <em>x</em>²<em>y</em>²), -<em>x</em> / (1 + <em>x</em>²<em>y</em>²), 1)

∇ <em>f </em>(0, 3, 0) = (-3, 0, 1)

This vector is orthogonal to the surface <em>z</em> = <em>f(x</em>, <em>y)</em>. Then the equation of the tangent plane is

∇ <em>f </em>(0, 3, 0) • (<em>x</em>, <em>y</em> - 3, <em>z</em>) = 0

(-3, 0, 1) • (<em>x</em>, <em>y</em> - 3, <em>z</em>) = 0

-3<em>x</em> + <em>z</em> = 0

<em>z</em> = 3<em>x</em>

5 0
3 years ago
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