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3 years ago

Is the expression 3(x+1 1/2)-3 equivalent to 3x+ 1 1/2

Mathematics

1 answer:

stira [4]3 years ago

7 0

Answer:

Yes

Step-by-step explanation:

3(x+5.50)-3

3x+16.50)-3

-3(3x+16.50)

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svetlana [45]

15.99 + 9.99 = 26
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3 years ago

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Between which two ordered pairs does the graph of f(x) = x2 + x – 9 cross the negative x-axis? Quadratic formula: x =

katrin2010 [14]

(-6,0) and (-5,0) I got it right

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2 years ago

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Find the value of b.

Nesterboy [21]

Answer: $230^{\circ$

Step-by-step explanation:

For convenience, I labeled some points as shown in the attached picture.

Also, I assume $\overline{AB}$ and $\overline{BC}$ are tangents to the circle.

$\overline{BO} \cong \overline{BO}$ (reflexive property)
$\overline{AB} \cong \overline{BC}$ (tangents drawn from a common external point are congruent)
$\angle BAO \cong \angle BCO$ (right angles are congruent)

Therefore, we know $\triangle ABO \cong \triangle CBO$ by HL.

Thus, by CPCTC,

$\angle AOB \cong \angle BOC \implies m\angle BOC=65^{\circ}\\\\\implies m\angle AOC=130^{\circ}$

This means the measure of minor arc AC is $130^{\circ}$ , and thus $b=360^{\circ}-130^{\circ}=\boxed{230^{\circ}}$

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1 year ago

Write a verbal expression for 5x cubed + 2

gladu [14]

Answer:

2 added to cube of 5 times x

Step-by-step explanation:

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3 years ago

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What is y=2 plus 4?<br>

Volgvan

Answer:

y=6

Step-by-step explanation:

all you do is add 4 and 2

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3 years ago