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3 years ago

Which statement about the zeros of the graphed function is true?

Mathematics

2 answers:

Anton [14]3 years ago

8 0

Answer:

A. The function has three distinct real zeros.

Step-by-step explanation:

kupik [55]3 years ago

5 0

Answer:

for PLATO users

Step-by-step explanation:

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What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti

Marat540 [252]

Answer:

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

Step-by-step explanation:

Given

$x^2 - 5x - 7 = 0$

Required

Solve for x using:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

First, we need to identify a, b and c

The general form of a quadratic equation is:

$ax^2 + bx + c = 0$

So, by comparison with $x^2 - 5x - 7 = 0$

$a = 1$ $b = -5$ $c = -7$

Substitute these values of a, b and c in

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

$x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}$

$x = \frac{5 \± \sqrt{25 +28}}{2}$

$x = \frac{5 \± \sqrt{53}}{2}$

Split the expression to two

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

To solve further in decimal form, we have

$x = \frac{5 + 7.28}{2}$ or $x = \frac{5 - 7.28}{2}$

$x = \frac{12.28}{2}$ or $x = \frac{-2.28}{2}$

$x = 6.14$ or $x = -1.14$

4 0

3 years ago

-54 - 7r = -5(-2 - 5r)

makkiz [27]

-54-7r=10+25r
-7r-25r=10+54
-32r=64
r=64/-32
r=-2

3 0

3 years ago

Use what you know about end behavior to match each function in standard form with its graph below.

LUCKY_DIMON [66]

Answer:

2=C

3=A

4=D

5=B

Step-by-step explanation:

5 0

2 years ago

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Can someone help me plz!!

ollegr [7]

Answer:

MRT or TRM

Step-by-step explanation:

RT and MR meet at point R. Point R must be included in the final angle as well as the endpoints of RT and MR. The resulting angle is thus MRT, or TRM

4 0

2 years ago

The volume of the rectangular prism is ________ cm3

just olya [345]

Answer:

volume of rectangular prism =l×w×h

volume of rectangular prism =4cm×2cm×7cm

volume of rectangular prism =56cm³

5 0

2 years ago

Read 2 more answers