3 years ago

Make a ten or a hundred to add mentally 339+123

Mathematics

1 answer:

prohojiy [21]3 years ago

8 0

The answer to the addition problem is 462.

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Write an equation for the nth term of the arithmetic sequence 37, 29, 21, 13, ....

aleksley [76]

Answer:

n= 37 -8n

the first n is the end result, the second in the equation is the __ number, the nth number

Step-by-step explanation:

4 0

3 years ago

Solve the quadratic equation. Show all of your steps. x 2 + 3 x − 5 = 0

AlladinOne [14]

For this case we have the following quadratic equation:

$x ^ 2 + 3x-5 = 0$

Where:

$a = 1\\b = 3\\c = -5$

We look for the solution using the following formula:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting the values:

$x = \frac {-3 \pm \sqrt {3 ^ 2-4 (1) (- 5)}} {2 (1)}\\x = \frac {-3 \pm \sqrt {9 + 20}} {2}\\x = \frac {-3 \pm \sqrt {29}} {2}$

Thus, we have two roots:

$x_ {1} = \frac {-3+ \sqrt {29}} {2}\\x_ {2} = \frac {-3- \sqrt {29}} {2}$

Answer:

$x_ {1} = \frac {-3+ \sqrt {29}} {2}\\x_ {2} = \frac {-3- \sqrt {29}} {2}$

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3 years ago

Which of the following characteristics best describes the given function of f(x) = 3x - 6?

Trava [24]

Answer:

Step-by-step explanation:

degree 1 ( linear function

4 0

3 years ago

Which points are on the graph of k(x)=(1/4)^x ?

Likurg_2 [28]

(-1,4) and (3 1/64)
I took the test like 5 minutes ago.
I hope this helps!

7 0

3 years ago

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A hyena can run of a mile in 22.5 seconds. At this rate, which equation can be used to determine how fast a hyena runs in miles

Mrac [35]

Answer:

90 miles per hour.

Step-by-step explanation:

1 mile = 22.5 seconds

22.5 seconds per hour

3,600 seconds in a hour

3600/22.5=160

90 miles per hour = 2025 seconds

7 0

3 years ago

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