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IrinaK [193]
3 years ago
6

(4.1•10^-2)-(9.5•10^-3) please help me!!!

Mathematics
1 answer:
Gre4nikov [31]3 years ago
3 0

Answer:

0.0315

Step-by-step explanation:

(4.1 • 10^{-2}) - (9.5 • 10^{-3})

0.041 - 0.0095

0.0315

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A system of equations is shown:
Harrizon [31]

Answer:

<h2>(1, 4)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}2x=-y+6&(1)\\-4x+3y=8&(2)\end{array}\right\\\\(1)\\-y+6=2x\qquad\text{subtract 6 from both sides}\\-y=2x-6\qquad\text{change the signs}\\y=6-2x\\\\\text{substitute it to (2):}\\\\(2)\\-4x+3(6-2x)=8\qquad\text{use the distributive property}\\-4x+(3)(6)+(3)(-2x)=8\\-4x+18-6x=8\qquad\text{subtract 18 from both sides}\\-10x=-10\qquad\text{divide both sides by (-10)}\\x=1\\\\\text{put the value of x to (1):}\\\\y=6-2(1)\\y=6-2\\y=4

6 0
3 years ago
HELP............Graph. y+1=1/3(x−3) (it has to have 2 points)
natta225 [31]
The intercept method of graphing is quick and easy.

Find the x-intercept by setting y = 0 and solving for x:

y+1=1/3(x−3)   =>   0<span>+1=1/3(x−3)
  Multiply both sides by 3:  3 = x - 3.  Then x = 6, and the x-int. is (6, 0).

Find the y-int by setting x = 0 and solving for y:

</span><span>y+1=1/3(0−3)
Mult both sides by 3:  3y+3 = -3, so that 3y = -6, and y = -2.
Then the y-intercept is (0,-2).

Plot these 2 points.  Then draw a line thru them.</span>
5 0
3 years ago
Solve the equation. 5t^3 +40t^2 = -80t
Gnesinka [82]

Answer:

-5t2 + 40t - 3

Step-by-step explanation:

Step-1 : Multiply the coefficient of the first term by the constant   5 • 3 = 15

Step-2 : Find two factors of  15  whose sum equals the coefficient of the middle term, which is   -40 .

     -15    +    -1    =    -16

     -5    +    -3    =    -8

     -3    +    -5    =    -8

     -1    +    -15    =    -16

     1    +    15    =    16

     3    +    5    =    8

     5    +    3    =    8

     15    +    1    =    16

5 0
3 years ago
Given the function f(x)=x^2+2x+1, find a f(−7)
tatuchka [14]

Answer:

36

Step-by-step explanation:

f(x)=x^2+2x+1

Let x = -7

f(-7)=(-7)^2+2*-7+1

     = 49 -14+1

     = 36

3 0
3 years ago
Graph the following inequality.<br> y less than minus 4
Georgia [21]
Open circle with arrow going to the left
3 0
4 years ago
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