MATHEMATICS HIGH SCHOOL

HELP PLEZ!!!!!!!!!!!Which equations are true for the values of x, y, and z? Select three options.

X° + 65° = 180°
x° = z°
y° = 65°
x° = 65°
x° + y° + z° = 115°

Answers

Answer 1

Answer:

Answer:

a, b, and c

Step-by-step explanation:

a. x°+65°=180°

b. x°=z°

c. y°=65°

d. x°=65°

e. x°+y°+x°=115°

x = 115°

y = 65°

z = 115°

Related Questions

When it goes on sale for $1,600, Mikah buys a new plasma television that is valued at $1,800. He takes $300 from his savings account to use as a down payment and finances the rest. Choose the true statement.a. Mikah's assets increased by $1,300. b. Mikah's assets increased by $1,500. c. Mikah's assets increased by $1,600. d. Mikah's assets increased by $1,800.
Please 20 points I need it fast
L is the midpoint of MN¯¯¯¯¯¯¯, ML=2x+7 and LN=3x−3. Find ML, LN, and MN.
How do you work out 5x + 5 = 2x + 11 in steps with a lot of detail?
Look at this sequence.95, 80, 65, 50,... Which function represents this sequence? A. a(n) = 110n - 15 B. a(n) = 15n + 80 C. a(n) = 95n - 15 D. a(n) = -15n + 95

Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given question. Listed below are the weights in pounds of 1111 players randomly selected from the roster of a championship sports team. Are the results likely to be representative of all players in that sport's league? 186 229 240 257 187 221 309 293 257 274 221

Answers

Answer:

(a) Mean =243.0909

(b) Median = 240

In other words it is the middle value of the data arranged in order.

(d) Mid Range = 247.5

Variance = 1578.5037

Standard Deviation = 39.730

Range = 309-186= 123

(e) No the results are not likely to be representative of all players in that sport's league because they are not similar.

Step-by-step explanation:

First arranging the data in ascending order

186 187 221 221 229 240 257 257 274 293 309

(a) Mean = Sum of observations/ No of observations

= 186 + 187 + 221 +221 + 229 + 240 + 257 + 257 + 274 + 293 + 309 /11

= 2674/11=

= 243.0909

(b) Median for un grouped data is

Here n = 11 and n/2 = 11/2 is not an integer

Median = Results obtained by ([n/2] +1) player

= (11/2 +1) = 6th player in ordered data

= 240

In other words it is the middle value of the data arranged in order.

(c) Mode = Most frequent values.

There are two modes : 221 and 257 . These both values occur repeatedly.

(d) Mid Range = Maximum Value + minimum value/ 2= 186+ 309/2= 247.5

Now we will find the variance and standard deviation

The variance is given by

s² = (186-243.0909)²+ (187-243.0909)²+ (221-243.0909)²+ (221 -243.0909)²+(229-243.0909)²+ (240-243.0909)²+( 257-243.0909)²+ (257 -243.0909)²+ (274-243.0909)²+ ( 293-243.0909)²+ (309 -243.0909)²/11-1

s²= 3259.370 + 3146.139+ 488.008+ 488.008+ 198.553+ 9.554+ 193.463 + 193.463 + 955.372 + 2509.098 + 4344.009/10

s²= 15,785.037/10= 1578.5037

And Standard Deviation = s= √1578.5037= 39.730

Variance = 1578.5037

Standard Deviation = 39.730

Range = 309-186= 123

(e) No the results are not likely to be representative of all players in that sport's league because they are not similar.

A theater needs to place seats in rows. The function, f(r) as shown below can be used to determine the number of seats in each row, where r is the row number.f(1) = 8
f(r) = f(r – 1) + 3
Use the function to complete the table indicating the number of seats in each row for the first four rows of the theater.

Answers

The row counts start at eight and count up by three:

$f(1)=8$
$f(2)=f(2-1)+3=f(1)+3=8+3=11$
$f(3)=f(3-1)+3=f(2)+3=11+3=14$
$f(4)=f(4-1)+3=f(3)+3=14+3=17$
.
.
.
and so on.

Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 5x − 1). If the final answer is written in the form Ax2 + Bx + C, what is the value of A? Numerical Answers Expected! Answer for Blank 1:

Answers

Taking out the parentheses of expression
(5x2 + 3x + 4) − (2x2 + 5x − 1)

= 5x2 + 3x+ 4 -2x2 - 5x + 1

Grouping together the like terms and arranging the expression:
= 5x2 - 2x2 + 3x - 5x + 4 + 1

Combining the like terms:
= 3x2 - 2x + 5

Therefore,
A = 3

Answer: 3

Step-by-step explanation:

Solve for x.
- 1 /2 (x + 5) = -10

Answers

-1/2(x+5=-10
multipl yboth sides by -1 since I don't like negatives
1/2(x+5)=10
multiply both sides by 2/1 to clear fraction
x+5=20
subtract 5
x=15

ANSWER: x=15

ORIGINAL EQUATION:
-1/2(x+5)= -10

Simplify by multiplying (x+5) by (-1/2)
-0.5x+(-2.5)= -10

Add 2.5 on both sides
-0.5x= -7.5

Divide by -0.5 on both sides
x=15

A certain type of water lily doubles the area it covers every year. Ten years after being planted in our lake the water lilies cover a quarter of the lake's surface. How many more years will it be before they cover the entire surface of the lake?

Answers

2 years. The first time it would go from a quarter of the lake to half. The next year it would double that, taking over the whole lake.

A scientist writes the equation n(h)100e^0.25h to model the growth of a certain bacteria in a petri dish, where N represents the number of bacteria after h hours. After approximately how many hours will 450 bacteria be present? Round your answer to the nearest whole number.1 hour
6 hours
13 hours
15 hours

Answers

Answer: Second option is correct.

Step-by-step explanation:

Since we have given that

$n(h)=100e^(0.25h)$

where, N represents the number of bacteria after 'h' hours.

So, we have given that there are 450 bacteria present.

N = 450

According to question,

$450=100e^(0.25h)\n\n(450)/(100)=e^(0.25h)\n\n4.5=e^(0.25h)\n\n\text{Taking natural log 'ln' on both sides}\n\n\ln (4.5)=0.25h\n\n1.50=0.25h\n\nh=(1.50)/(0.25)\n\nh\approx 6\ hours$