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aalyn [17]
3 years ago
8

If r + 9 = 42, does r + 9 - 9 = 42 + 9? Why or why not?

Mathematics
1 answer:
pav-90 [236]3 years ago
7 0
No it does not because the answer is 33 to the first one and the answer is 51 for the second one
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Use natural logarithms to solve the equation 9e 4x = 54 forx. Give the exact solution and an approximate
GuDViN [60]

Answer:

.448

Step-by-step explanation:

9e^{4x} = 54 \\e^{4x} = 54/9\\e^{4x} = 6\\ln{6} = 4x\\ln{6}/4 = x\\.448 =x\\(approx)

8 0
3 years ago
20 POINTS and BRAINLIEST<br> Solve the simultaneous equation!
Zina [86]

Answer:

x=3   y=-1

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I need help ASAP ok ...
tankabanditka [31]
One positive plus another is always positive because:

+ and + is +
+ and - is -
- and - is +
8 0
4 years ago
For the function f(x) = x^2, what effect will multiplying f(x) by 1/4 have on the graph
ELEN [110]

Answer:

B. The graph will be compressed vertically.

Step-by-step explanation:

The given function is f (x) = x²

The new function is f 1 (x) = 1/4 x².

The general function of the form is f(x) = a · x²

i) If |a| < 1   the graph is compressed vertically by a factor of a.

ii)  If |a| > 1  the graph is stretched vertically by a factor of a.

Here:  a = 1/4 < 1

Answer:

B. The graph will be compressed vertically.

Hope this will helpful.

Thank you.

4 0
4 years ago
Read 2 more answers
Need help rn 30 points
Ilia_Sergeevich [38]

Answer: X = (-\frac{5}{4}\\, 6)

Step-by-step explanation:

x(4x - 19) = 30

4x^2 - 19x = 30

4x^2 - 19x - 30 = 0

ax^2 + bx + c = 0

X{1}=  \frac{-b+\sqrt{b^{2} -4ac}}{2a}\\= \frac{19+\sqrt{(-19)^{2} -4(4)(-30)}}{2(4)}\\ = 6

X{2}= \frac{-b-\sqrt{b^{2} -4ac}}{2a}\\=\frac{19-\sqrt{(-19)^{2} -4(4)(-30)}}{2(4)}\\= -\frac{5}{4} = -1.25

X = (-\frac{5}{4}\\, 6)

7 0
3 years ago
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