4 years ago

What is -X (squared) -9x +3 simplified

Mathematics

2 answers:

Fed [463]4 years ago

8 0

To do this you just factor out the negative since it's already in simplest form
-(x+9x-3)

AlekseyPX4 years ago

5 0

The simplified answer is x = 1/3

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Which equation is equivalent to 7(x-2) = 149? Will give Brainly points

Effectus [21]

Answer:

B. $\log_{7} 149+2 = x$

Step-by-step explanation:

Let $7^{x-2} = 149$ , we proceed to find its equivalent expression by applying logarithm properties:

1) $7^{x-2} = 149$ Given.

2) $\log_{7} 7^{x-2} = \log_{7} 149$ Definition of logarithm.

3) $(x-2)\cdot \log_{7}7 = \log_{7} 149$ $\log_{a} b^{c} = c\cdot \log_{a} b$

4) $x-2=\log_{7}149$ $\log_{a}a = 1$

5) $x = \log_{7}149+2$ Compatibility with addition/Existence of additive inverse/Modulative property

6) $\log_{7} 149+2 = x$ Symmetrical property/Result.

Hence, the right answer is B.

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3 years ago

Which expression calculates the speed in meters per second of an object that travels a distance of 40 m every 10 s?

RideAnS [48]

Speed = distance/time

So speed = 40/10

= 4m/s

3 0

4 years ago

a trapezoid has an area of 20cm squared and a height of 5 cm. what is the sum of its top and bottom sides

bonufazy [111]

$A=\frac{a+b}{2} h$
A - area
h - height
a+b - sum of its top and bottom sides

$20=\frac{a+b}{2} \cdot 5 \\
4 = \frac{a+b}{2} \\
a+b=8$

The sum of its top and bottom sides is 8 cm.

6 0

3 years ago

AAAH HELP! Assume that r varies directly as p. What is the constant of proportionality if r = 3 when p = 15. k = 1\5 k = 5 k = 3

Alexus [3.1K]

Answer:

k = $\frac{1}{5}$

Step-by-step explanation:

Given that r varies directly as p then the equation relating them is

r = kp ← k is the constant of variation

To find k use the condition r = 3 when p = 15, then

3 = 15k ( divide both sides by 15 )

$\frac{3}{15}$ = k , that is

k = $\frac{1}{5}$

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3 years ago

A spinner is divided into 8 equal sections. Two of the sections are red, 3 are green, and 3 are blue. What is the probability of

xxTIMURxx [149]

The answers are 1/4, 56 times .

Hope this helps!<3

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3 years ago