Solve |7x+21| =14x
identify the solution and extraneous solution.


a) solution: x=3;
extraneous solution x=-3

b) solution x=3;
extraneous solution: x=-1

c) solution: x=-1
extraneous solution: x=3

d) solution: x=1
extraneous solution: x=-3

Answer:answer is b

Step-by-step explanation:

1 and 3 are ___
angles.

1.corresponding
2.complementary
3.vertical
4.supplementary

An experiment consists of rolling two fair dice and adding the dots on the two sides facing up. What is the probability that the sum of the dots is 12?
A. 1/36

B. 1/18

C. 1/12

D. 1/9

help quick!!!!! be original

Can anyone please help me with this question!!

5x-3y=-9 does anyone know an easy way to solve this

PLZZ HELP ASAP MEH DUDES
how many solutions does this linear equation have:
-3 (x + 3) = -3x - 11
one solution
infinite solutions
no solutions

Algebra 2, help ASAP.

Solve the equation using the Properties of Equality. 2/9m -1/9 = 1/18 M=

Classify the following numbers as rational
or irrational.

How much does an isosclese triangle add up to

is 2.81 an irrational number

To pass a course with a C ​grade, a student must have an average of 70 or greater. A​ student's grades on three tests are 69​, 75​, and 64. Find what score the student must get on the next test to get a C average

Solve the absolute value equation
algebraically: 3|2x - 3| + 2 = 3

m21 = (4x + 9)° and m2 2 = (x - 14)° in the given figure. Find x.
K
37
O 19
7
8

Dino has 14 coins and 2 one dollar bills which describes the relationship between the coins and the dollar bills?

Period
Write the slope-intercept form of the equation of each line. Also create a table of values that
displays 8 coordinate pairs.
A) y = 3x - 4
B) y=-3x - 4
C) y = 2x - 4
D) y=-x-4

Joan won a multi-million dollar lottery. She decides to give $1000000 of her winnings to charity. Her plan is to give 1/2, or 2^-1 to charity in January, then give half of the remaining amount in February, half again in March and so on. a) What fraction remains after 6 months? b) what fraction remains after 12 months? c) Write a fraction as a power of 2 with a negative exponent. d) What amount is remaining at the end of the year?

Complete this item.


Identify ∠1 and ∠ 2. Select all that apply of the following terms: acute, right, obtuse, adjacent, vertical, complementary, supplementary.

Given t(x)=-4.9t^2+3t+10, what is the value of t(1)?

My grandmother collects rubber ducks. She has 178
ducks and gives away x ducks. Write an expression to
show how many ducks she has left

Write the equation of the line that passes through the given points. (0, -2) and (-5, -8)

90 POINTS I WILL GIVE BRAINLIEST! - If a line with the equation y = x is dilated by a factor of 2 what is the equation of the resulting line? If it is then moved three units up, what is the equation of the resulting line? - I want to say that the equation does not change, is that correct or am I missing something?

These numbers are multiples of
16, 24, 32, 40
A) 3
B) 6
C) 7
D 8

A photographer charges customers a one-time
booking fee and an hourly rate of $50. For a 1-hour
photo session the photographer charges $95. Write
a linear equation that represents the total charge t
for h hours of service.

plss help asap i’ll give brainliest

Is -49 a equivalent form of 7^-2

Find the inverse of f(x)

​
​ ​Lisa smiled at her reflection, then made a funny face. She wore a cap, and her long hair blew in the wind. Her cheeks were pinkish from the cold and the wind, and her nose was moist. Lisa stepped away from nature’s mirror and was debating what after-school snack she would fix when she spied a lake of rainwater that extended from their squat trailer to the rusting tractors parked in the back.
​
“Oh, wow,” she remarked. The afternoon glare off the lake made her squint. How strange, she mused. It had rained just after lunch at school, but the downpour hadn’t seemed that heavy. Had a cloud stalled above their trailer and poured out its little heart?
​
She strolled around the new lake, occasionally gazing back at her footprints in the soggy earth. The chickens in the yard were soggy, too, their feathers parted and showing the yellow skin underneath. Still, they scratched and pecked at the ground and left their own shallow prints in the wet earth.
​
​​I’ll draw the lake, Lisa decided. She liked drawing birds, but had grown tired of sparrows, blue jays, and blackbirds wrapped in glossiness. These days she liked doing portraits, though she could draw objects, too. The previous week she had drawn the pile of tires behind the tractors; the drawing now adorned the front of the refrigerator.
​
​Lisa produced a pencil and her sketch pad from her backpack. She had to capture this lake before it disappeared into the earth, taking with it the fluffy clouds mirrored on its surface. Birds the color of asphalt flittered about the edges of the puddle, and she recognized them as common finches. She knelt on the wet ground, putting down on paper what her eye beheld, what her fingers were able to portray.
​
​ ​Her gift was a mystery, as neither of her parents could draw. Their talent was to bring their faces together, like lovebirds, and warble Mexican songs, although most of the time they were working. Her father was employed by a dairy and her mother, from windy March to scorching July, worked in the fields—she thinned beets and cotton and was sometimes on a women’s crew that harvested cantaloupes. There were also two seasons when she packed peaches.
​
​ ​Lisa’s dog, Pecas, roamed in the background. He paused, head raised and fur parting from the wind. Lisa had to smile. He seemed to be posing as the subject of her artwork. His breath hung in the air when he barked at movement in the grass—a rabbit, she wondered, or a quail in search of a mate? The gopher that had tunneled under their garden patch last summer and nibbled at everything her father had planted: cucumbers, tomatoes, chilies, and eggplant?
​
​I’ll surprise my parents with this new drawing, Lisa thought. “Cállate!” 1 she ordered Pecas, who turned, head lifted and tail wagging, and happily trotted toward her. But when two large white birds dropped from the sky, Pecas lurched in fear, kicking up water. “Oh my gosh,” Lisa uttered, dropping her pencil. She searched the sky for other birds. But the sky was vacant, except for blackbirds wheeling over the fields across the street.
​
​As she took a cautious step toward the birds, she remembered that the night before she had been looking in her Audubon book at a picture of a bird that she would like to draw: the egret. Now before her stood a pair of egrets, which, against the backdrop of the grayish lake, were white as snow.
​
​Lisa’s heart thumped with excitement and Pecas’s tail wagged briskly. Lisa again turned her attention skyward: Where had they come from? What wind had brought them here at this moment? She reached for the pencil on the ground and rolled it between her palms to spark the fires of creation. She had to draw these rare and silent birds, who, if she remembered right, seldom whistled or twittered with song.

​Lisa turned and gasped. Over the lake arched a rainbow that began somewhere behind the tractors. The centerpiece was the pair of egrets, still as statues. Even Pecas stopped his whining. Lisa wondered, Can he really see the rainbow? She had read that dogs were mostly color-blind, but that birds, even common ones like the sparrow and finch, could slice the color red into a dozen shades. Their world was richer in color than some of the greatest paintings.
​
​Lisa tried to sketch the scene quickly before it disappeared: First the egrets would fly away, then the rainbow fade, and finally the deposit of rain sink into the earth.
​
​“It’s so beautiful,” she remarked.
​
​A black-and-white calf ambled out from between the rusty tractors. Splattered with mud, it moved with a heavy sway toward the water. The calf stopped, then raised its heavy head to Lisa, as if saying, “Go ahead—draw me.” It lowered its gaze to turn and present a mournful profile, spittle hanging from its mouth.
​
​ ​“Oh,” Lisa let out, and added the cow to the scene. She made a face when she heard the telephone ring.
​

!!15 POINTS!! What is the range of the function in this table?

prove that :

tan^2(theta) - tan^2(alpha) = sec^2(theta) - sec^2(alpha)​