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Fiesta28 [93]
3 years ago
9

Find the value of x in x+y=8 and x-y=6

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
7 0

Answer: x=-y+8 and x=y+6

Step-by-step explanation:

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Find the value of the polynomial-x -x^2+3x+2 what x =-4
Lelechka [254]
I got 270. hope this helped
4 0
2 years ago
13% of $99.99 =<br> $26.00<br> O $25.98<br> O $13.00<br> O $12.99
vova2212 [387]

Answer:

12.99 or 13 rounded

Step-by-step explanation:

99.99/(.13)=12.9987

8 0
2 years ago
Given f(x) and g(x) = f(k⋅x), use the graph to determine the value of k.
yan [13]

Answer:

The value of k is 3.

Step-by-step explanation:

The function f(x) passes through the points (0,4) and (-6,-2)

So the equation of the function is \frac{y-4}{4-(-2)} = \frac{x-0}{0-(-6)}

⇒ y = x + 4 ....... (1)

Again the function g(x) passes through the points (0,4) and (-2,-2).

Therefore, the equation of g(x) will be  \frac{y-4}{4-(-2)} =\frac{x-0}{0-(-2)}

⇒ y = 3x + 4

Therefore, g(x) = 3x + 4 = f(3x) {from equation (1).

So, the value of k is 3. (Answer)

3 0
2 years ago
Read 2 more answers
Eginning at 15,000 feet, a commercial jetliner begins climbing at a rate (in feet per minute) given by f(t)=e0.4t+8 f ( t ) = e
nydimaria [60]

Answer:

16,126 ft

Step-by-step explanation:

Using the net change theorem and letting s(t) represent the aircraft's position, and s(0) be the aircraft's position at time t = 0, s(0) = 15000 ft  and s(15 be the aircraft's position at time, t = 15 minutes respectively, then,

s(15) - s(0) = ∫₀¹⁵f(t)dt

s(15) - s(0) = ∫₀¹⁵[e^{0.4t}  + 8]dt

s(15) - 15000 = [\frac{e^{0.4t}}{0.4}   + 8t]₀¹⁵

s(15)  - 15,000 ft = \frac{e^{0.4X15}}{0.4}   + 8X15 - \frac{e^{0.4 X 0}}{0.4}   + 8(0)\\\frac{e^{6}}{0.4}   + 120 - \frac{e^{0}}{0.4}   + 0\\\frac{403.43}{0.4}   + 120 - \frac{1}{0.4}   + 0\\1008.57 + 120 - 2.5\\1126.07

s(15) = 15,000 ft + 1126.07 ft

s(15) = 16,126.07 ft

s(15) ≅ 16,126 ft to the nearest foot

4 0
2 years ago
_(_4×_3y-25) .we will
Wewaii [24]

We have the following expression:

-(-4x-3y-25)

We must find an equivalent expression without parenthesis, for this, we can apply the product of signs and apply the law of signs

4x+3y+25

The answer, in conclusion, an equivalent expression is:

-(-4x-3y-25)=4x+3y+25

8 0
1 year ago
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