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Anestetic [448]
3 years ago
7

−4x + 15= -13 what is x?

Mathematics
2 answers:
Annette [7]3 years ago
8 0
Solve your equation step-by-step.

−4x+15=−13

Subtract 15 from both sides.

−4x+15−15=−13−15

−4x=−28

Divide both sides by -4.

−4x/−4 = −28/−4

x=7

skelet666 [1.2K]3 years ago
4 0
-4x+15=-13 \ \ \ |-15 \\ \\ -4x=-28 \ \ \ |:(-4) \\ \\ x=7

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Find the 15th term of the geometric sequence 2 , -8 , 32
marishachu [46]

Answer:

first term (a)= 2

second term (b) = -8

common ratio (r) = -8/2 = -4

15th term = ar^ (n-1)

                = 2* (-4)^ 14 =536870912

Step-by-step explanation:

5 0
2 years ago
The population of a certain species of bird in a region after t years can be modeled by the function P(t)= 1620/1+1.15e^-0.042t
natka813 [3]

Answer:

A

Step-by-step explanation:

The function is  \frac{1620}{1+1.15e^{-0.042t}}

To find the maximum population, we need to set t towards infinity to get our answer.

So, we replace time with maximum (\infty). Let's check:

\frac{1620}{1+1.15e^{-0.042t}}\\=\frac{1620}{1+\frac{1.15}{e^{0.042t}}}\\=\frac{1620}{1+\frac{1.15}{e^{0.042(\infty)}}}\\=\frac{1620}{1+\frac{1.15}{\infty}}\\=\frac{1620}{1+0}\\=\frac{1620}{1}\\=1620

The population of birds approaches 1620 as t goes towards infinity. So we can say the max population of the species is 1620.

Correct answer is A

5 0
3 years ago
Read 2 more answers
O graph the equation 2x + 5y = 10, Zeplyn draws a line through the points (5, 0) and (0, 2). What is the slope of the line repre
JulijaS [17]
2x + 5y = 10
Change to y = mx + b
subtract 2x from both sides
5y = -2x + 10
divide both sides by 5
y = -2/5x + 2
slope = -2/5
LETTER B
6 0
3 years ago
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Question 7 of 15
IgorC [24]

Answer:

4 is in the tenths place. 9 is in the ones. 5 is in the hundredths. 3 is in the thousandths.

4 0
2 years ago
Solve for x <br><br><br><br><br><br>.problem down below ​
AleksAgata [21]
A: no solution!

first, simplify each side of the equation.

3x + 5 - 10x simplifies to -7x + 5.
8 - 7x - 12 simplifies to -7x - 4.

then, add +7x on both sides of the equation to get the variable alone. if you add 7x to each side, you get left with 0.

so, that leaves 5 = -4 which is not true. so, that means there is no solution.
5 0
3 years ago
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