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3 years ago

Find the slope and the y-intercept of the line y=-2/5x+5

Mathematics

1 answer:

nexus9112 [7]3 years ago

5 0

Answer:

slope is -2/5, y intercept is (0,5)

Step-by-step explanation:

The slope is the number in front of the x, or how steep the line is on the graph. In this case, it is -2/5.

The y intercept happens when x = 0, so if you make x = 0 in this equation, you find that you are left with y = 5. That gives you the point (0,5) as your y intercept.

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What is the missing number in the series?<br><br> 1, 16, 81, __, 625, 1296

Alinara [238K]

Answer:

256

Step-by-step explanation:

We are given the series

1, 16, 81, __, 625, 1296

The missing number in the sequence is the fourth term

From the above sequence, we know that

1, 4², 9² , __, 25² , 36²

Difference between first term = 4 - 1 = 3

9 - 4 = 5

x - 9 = 7

x = 9 + 7 = 16

Hence, the fourth term = 16²

= 256

6 0

2 years ago

Help with my homework <br> Evaluate the exponent expression for a = 1 and b = –2.

Snowcat [4.5K]

Answer:

-1/16

Step-by-step explanation:

Put the values where the variables are and do the arithmetic.

1 to any power is 1, so you can ignore all of the 'a' factors. That leaves ...

1/(2b^3) = 1/(2(-2)^3) = 1/(2(-8)) = -1/16

___

A calculator can help you figure this out.

7 0

3 years ago

Angle relationships with parallel lines please help can someone answer

aleksley [76]

Answer:

x=56

Step-by-step explanation:

when it's parallel lines they're just equal idk how to explain sorry twji44ktgrohubi

6 0

3 years ago

Logarithm 2. The alkalinity of a fluid (pH) can be modeled in terms of its hydrogen ion concentration (H^+,measured in moles/lit

makkiz [27]

ok. We are given the following equation:

$ph=-\log (H)$

Where:

$\begin{gathered} P=\text{ alkalinity} \\ H=\text{ hydrogen ion concentration} \end{gathered}$

Since we are asked to determine "H" we will solve for "H" in the equation. To do that we will first multiply both sides by -1:

$-ph=\log (H)$

Now, we will use the following property of logarithms:

$\log _aB=c\rightarrow B=a^c$

Applying the property and having into account that:

$\log (H)=\log _{10}(H)$

We get:

$10^{-pH}=H$

Now we substitute the given value of "pH = 4.5":

$10^{-4.5}=H$

Solving the operation:

$0.000032=H$

Therefore, the hydrogen ion concentration of the fluid is 0.000032

7 0

1 year ago

What’s the addition expression that has the value of 8

Kisachek [45]

Answer:

There are a few.

Here are some:

1+7=8

4+4=8

2+2+2+2=8

8+0=8

7 0

3 years ago