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3 years ago

Using the quadratic formula I can't remember what to do next

Mathematics

1 answer:

Advocard [28]3 years ago

4 0

Answer: you square root it.

5r^2/5 = 80/5 =16

Sqr root of r^2=Sqr root of 16

r=4

Step-by-step explanation:

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the equation of the line a is given as y = -3/4 x -2. Suppose the line a is parallel to line b and lime t is perpendicular to li

Burka [1]

Answer: The equation for line b is $y = -\frac{3}{4}x + 5$

The equation for line t is $y= \frac{4}{3} x+5$

The attachment shows the original line in green, the parallel line b in red, and the perpendicular line t in blue.

Step-by-step explanation: Use slope intercept form, y = mx + b

The given coordinate, (0,5) is on the y-axis, so 5 will be the y-intercept of the equation. Keep the slope of the original equation and substitute the new value for "b"

To write the equation for line t

Both lines share the y-intercept, (0,5) so the "b" term will be the same. The slope of a perpendicular line is the reciprocal of the original slope with the opposite sign.

So invert 3/4 to become 4/3 and change the negative sign to positive.

The resulting equation is y = 4x/3 + 5

3 0

3 years ago

Is the set of numbers one 1,5,25 and 125 a geometric sequence

Strike441 [17]

Short answer: Yes.
Each member of the sequence is multiplied by 5 to get to the next member of the sequence.

Find the general equation.
tn = a*5^(n - 1)

Example
t4 = 1*5^(4 - 1)
t4 = 1*5^3
t4 = 125 just as the sequence shows.

t5 = 1^5^4
t5 = 625 Any member of the sequence can be found this way.

6 0

3 years ago

I don't know how to solve this 2/4 + 3/8=?

algol [13]

Answer:

7/8

Step-by-step explanation:

look it up

your wel3

6 0

3 years ago

Read 2 more answers

In 1990, the population of Boston, Massachusetts was 574,283. In 2000, the population was 589,141. What is the percent of change

MrMuchimi

Answer:

Percent of change in population is $2.6$ %

Step-by-step explanation:

Given population of Boston is $574,283$ measured in year $1990$ .

And population of Boston in year $2000$ is $589,141$ .

We need to find percent of change in population.

So, percent change $=\frac{New\ population-Old\ population}{Old\ population}\times100$ %

Here old population is $574,283$ and new population is $589,141$

Plugging these value in formula we get,

Percent change $=\frac{589,141-574,283}{574,283}\times100\\\\=\frac{14858}{574,283}\times100=0.0258\times100\\\\=2.587$

Rounding to nearest tenth 2.6%

8 0

4 years ago

Midge baked 6 cookies and 4 brownies. Midge only has enough ingredients to bake at most 25 cookies or brownies total. Let x repr

GenaCL600 [577]

Given:
baked: 6 cookies and 4 brownies
can bake 25 more either cookies or brownies

Let x represent the number of more cookies that Midge can bake
Let y represent the number of more brownies that Midge can bake.

cookies = 6 + x
brownies = 4 + y

(6 + x) + (4 +y) ≤ 25
10 + x + y ≤ 25
x + y ≤ 25 - 10
x + y ≤ 15

y ≤ 15 - x

The following graphs best represents the relationship between x and y is:

line joining ordered pair 0, 15 and 7, 8 and the region below this line which lies in the first quadrant is shaded

4 0

3 years ago

Read 2 more answers

Using the quadratic formula I can't remember what to do next ​

Using the quadratic formula I can't remember what to do next