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brilliants [131]

4 years ago

10

The difference between 2times r and 3 times the square root of t express algebraically

1 answer:

vagabundo [1.1K]4 years ago

7 0

$2\ times\ r=2\times r=2r\\3\ times\ the\ square\ root\ of\ t=3\times\sqrt{t}=3\sqrt{t}\\\\difference:"-"\\\\\huge\boxed{2r-3\sqrt{t}}\leftarrow your\ answer$

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Use the quadratic function f(x) = 2x^2 + 4x - 15. Find any x intercepts.

8_murik_8 [283]

So for this function we will be using the quadratic formula, which is $x=\frac{-b+\sqrt{b^2-4ac}}{2a},\frac{-b-\sqrt{b^2-4ac}}{2a}$ , to solve. a = x^2 coefficient, b = x coefficient, and c = constant. Using our equation, we can solve for the zeros (x-intercepts) as such:

$x=\frac{-4+\sqrt{4^2-4*2*(-15)}}{2*2},\frac{-4-\sqrt{4^2-4*2*(-15)}}{2*2}\\ \\ x=\frac{-4+\sqrt{16-(-120)}}{4},\frac{-4-\sqrt{16-(-120)}}{4}\\ \\ x=\frac{-4+\sqrt{136}}{4},\frac{-4-\sqrt{136}}{4}\\ \\ x=1.92,-3.92$

In short, your x-intercepts (rounded to the hundredths) are (1.92,0) and (-3.92,0).

6 0

4 years ago

Which is the graph of g(x) = 2^x-1 +3

nikdorinn [45]

Answer:

See attached picture

Step-by-step explanation:

The graph of $g(x) = 2^{x-1} +3$ is shown below. To find the graph, plug in a few key x values including -2, 1, and 2 then connect.

$g(x) = 2^{-2-1} +3 = \frac{1}{8}+3 = 25/8$

$g(x) = 2^{1-1} +3= 4$

$g(x) = 2^{2-1} +3 = 5$

3 0

3 years ago

1. The sum of the measures of two exterior angles of a triangle is 263. What is the measure of the third exterior angle?

Sergio039 [100]

<span>c. 107
</span><span>d. 9 sides
</span><span>c. greater than
please give brainliest</span>

7 0

4 years ago

A bar diagram for 12×1/2

tekilochka [14]

12* 1/2 is 6. It is 6 because just like 6 times 2 is 12 1/2 times two is 12 it is really the same pretty much.

8 0

4 years ago

Find the x- and y-intercepts of<br>5x-3y = 12.<br>x-intercept:<br>y-intercept:

Lady bird [3.3K]

Answer:

-5x -5x

-3y=-5x +12

/-5x /-5x

-5-3y=x+12

/-3 /-3

-5+y=x-4

+5 +5

y=x+1<---(y intercept(and it is its slop))

5x-3y = 12

/-3y /-3y

5x=-3y+12

/5 /5

x=-3y+2.4

/-3 /-3

-3+x=y+2.4

+3 +3

x=y+5.4<---(x intercept(not the slop because the y is not the first number))

8 0

3 years ago