MATHEMATICS HIGH SCHOOL

What's X?
Thank youuu

Answers

Answer 1

Answer:

Answer:

35°

Step-by-step explanation:

Please see the attached picture for full solution.

Answer 2

Answer: Answer might be 35 degrees

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Maria bought several post stamps and paid one dollar. There are stamps costing five cents, two cents, and one cent in the post office. She bought 10 times as many one-cent stamps as two-cent stamps, while the rest of the stamps she bought were five-cent stamps. How many one-cent stamps did Maria buy?
Which value of x makes the following equation true?4(x - 1) = -4x + 60A. 8B. 12C. 11D. 9

PLEASE DON'T GUESS I NEED TO GET THIS RIGHT!!!!!!!!!Bob and his best friend Bill have the same birthday, but Bob is 3 years older than Bill. Let the variable x represent Bob’s age and y represent Bill’s age. Which equation models the relationship between Bill’s age and Bob’s age?
A. y = x/3
B. y = x + 3
C. x = y + 3
D. y = 3x

Answers

Well if Bob (represented by x) is three years older than Bill (y), the only one correct is x=y+3. Dividing by three wouldn't make sense (choice A), adding three more years onto Bob won't work (choice B), and multiplying Bob's age by three wouldn't work either (choice D). The answer is choice C.
x=y+3

Which systems of equations have exactly one solution?Choose all answers that are correct.
1. y = 2x
y=2x+1

2 . x =5
y = -4

3. y = x+6
y -6 =x

4 . y= 3x+ 4
y =3

Answers

1.
$y=2x \n y=2x+1 \n \n2x=2x+1 \n2x-2x=1 \n0=1 \nnot \ true - no \ solution$

2.
$x=5 \ny=-4 \nalready \ solved - one \ solution$

3.
$y=x+6 \ny-6=x \n \ny=x+6 \ny=x+6 \n \nx+6=x+6 \nx-x=6-6 \n0=0 \ntrue - infinitely \ many \ solutions$

4.
$y=3x+4 \ny=3 \n \n3=3x+4 \n3-4=3x \n-1=3x \nx=-(1)/(3) \n \n(x,y)=(-(1)/(3),3) - one \ solution$

The answer is 2 and 4.

7(2x+6)-4(9x+6)<-26 what is the answer ?

Answers

7(2x+6)-4(9x+6)<-26
14x+42-36x-24<-26
-22x + 42-24 <-26
-22x +18 < -26
-22x < -44
x < 2

$7(2x+6)-4(9x+6)\ \textless \ -26 \n 14x+42-36x-24\ \textless \ -26 \n -22x+18\ \textless \ -26 \n -22x\ \textless \ -26-18 \n -22x\ \textless \ -44 \n -x\ \textless \ (-44)/(22) =-2 \n x\ \textgreater \ 2$

Sue bought ten items at an average price of $3.60. The cost of eight of the items totaled $30. If the other two items were the same price, what was the price she paid for each ?1) $15, 2) $7.50, 3) $6, 4) $3, 5) $1.50I guess the answer is $7.50.What is yr answer ???

Answers

4) $3
Total price of the 10 items= $3.6x10=$36
The cost of the other two items=$36-$30=$6
The cost of each of the two= $6/2(because they are the same price)
=$3

The answer is 4.) $3 each

She bought 8 items at $30 so those cost $3.75 each

8*$3.75=$30

then add $6 +30= $36

$36/10 = $3.60 for average cost of each item

so the other 2 items cost $3 each

What is the meaning of the unknown factor or quotient

Answers

The quotient is the answer to a division problem.

At the local pet store, zebra fish cost $1.85 each and neon tetras cost $2.10 each. If Yumi bought 11 fish for a total cost of $21.60, not including tax, how many of each type of fish did she buy?A 7 zebra fish, 4 neon tetras
B 4 zebra fish, 7 neon tetras
C 6 zebra fish, 5 neon tetras
D 5 zebra fish, 6 neon tetras