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3 years ago

2 ( 3 x 4) - 10 + 14/2 = 21 true or false

Mathematics

1 answer:

larisa86 [58]3 years ago

7 0

Answer:

true

Step-by-step explanation:

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HELP! What is the measure of angle 2? Is it 145° WILL GIVE BRAINLIEST!

Elena L [17]

Answer:

Angle 2 is 35 degrees

Step-by-step explanation:

Angle 2 is 35 degrees because of the alternate interior angles theorem.

8 0

4 years ago

Read 2 more answers

Find anequation for the perpendicular bisector of the line segment whose endpoints are(3, -1) and (-9,5).

Mariulka [41]

The perpendicular bisector goes through the midpoint.

What is the midpoint of the 2 points?

We simply add up the x points and divide by 2. Then we add up the y points and divide by 2.

So,

Midpoint is:

$(\frac{3-9}{2},\frac{-1+5}{2})=(-3,2)$

Also, the perpendicular bisector's slope is the negative reciprocal of the line's slope.

The slope of the line is change in y points divided by change in x points.

Slope =

$\frac{5--1}{-9-3}=\frac{5+1}{-12}=\frac{6}{-12}=-\frac{1}{2}$

The slope (m) of the perpendicular line (negative reciprocal) is basically:

$2$

Equation of line is:

$y-y_1=m(x-x_1)$

m is the slope (what we got "2")

x1 and y1 are the respective point where it passes through (which is the midpoint, which is (-3,2)

So, equation of perpendicular bisector is:

$\begin{gathered} y-y_1=m(x-x_1) \\ y-2=2(x+3) \\ y=2x+6+2 \\ y=2x+8 \end{gathered}$

4 0

1 year ago

choose all statements about percentages that are true a. 15% of 30 is 12 b. 25% of 80 is 20 c. 30% of 50 is 25 d. 30% of 60 is 1

Mashcka [7]

Answer:a b c

Step-by-step explanation:

7 0

3 years ago

Use laws of exponents to simplify inside the parentheses of the given expression ((a ^ - 2 * b ^ 2)/(a ^ 2 * b ^ - 1)) ^ - 3

Annette [7]

Answer:

$(\dfrac{a ^{ - 2 } b ^ 2}{a ^ 2 b ^ {- 1}}) ^ {- 3}=(a^{-2-2}b^{2+1})^-3=(a^{-4}b^{3})^{-3}=a^{12}b^{-9}$

Step-by-step explanation:

hope this helps

6 0

4 years ago

Which of the following can be prepositions? a. past c. under b. except d. all of the above Please select the best answer from th

spayn [35]

Answer:

Step-by-step explanation:

Hello!

Prepositions are words that describe a noun's directional location, time, place, et cetera.

For example, the sentence:

Angela misplaced her toy under the bed: under is the preposition since it describes where the toy is at. All of these answer choices are prepositions

7 0

3 years ago