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Nutka1998 [239]

4 years ago

5

May someone help me on this question with the right answer

1 answer:

Lubov Fominskaja [6]4 years ago

3 0

A standard deviation of 24 means that the actual scores of students range from 24 less than to 24 greater than the mean (average) score of 120. So to find the score that is half a deviation less than the mean score, you would divide 24 by 2 (to get half the mean) and then subtract that number from 120 (the average score).

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Convert to rectangular form r=4 cos theta

Amiraneli [1.4K]

Hello,

x=r cos t
y=r sin t
x²+y²=r²

r=4 cos t
r=4x/r==>x²+y²=4x
==>(x-2)²+y²=4 (a circle center (2,0),radius 2)

5 0

4 years ago

Read 2 more answers

Find the value of. X (will mark brainliest)

ella [17]

Answer:

$x=30$

Step-by-step explanation:

$5x=3x+60$

$-3x$ $-3x$

$2x=60$

$/2$ $/2$

$x=30$

Check:

$5(30)=3(30)+60$

$150=90+60$

$150=150$

Hope this helps!

4 0

3 years ago

Read 2 more answers

Quadrilateral PQRS is a rectangle. What is the length of PQ?

RUDIKE [14]

Answer:

C

Step-by-step explanation:

remember SOHCAHTOA

SOH is for sin

CAH is for cosin

TOA is for tan

line PS=14 so line QR=14

line PQ is your x value. so to solve, write out tan30=14/x

rewrite it so it now says x= 14/tan. type that in to your calculator and you get your answer

3 0

3 years ago

Each person in a group of twenty people at a hotel orders one meal chosen from oatmeal, eggs, or pancakes and one hot beverage c

Paraphin [41]

Answer:

$S = \{(Oatmeal, Coffee),(Eggs, Coffee),(Pancakes,Coffee),$ $(Oatmeal, Tea),(Eggs, Tea),(Pancakes,Tea)\}$

Step-by-step explanation:

Given

$Meal = \{Oatmeal, Eggs, Pancakes\}$

$Beverage = \{Coffee, Tea\}$

Required

Determine the sample space

The sample space is a list of combination of 1 meal and 1 beverage.

Because one individual can order only one of the meals and one of the beverages at any one time, then no two orders can be the same

The sample space (S) is as follows:

$S = \{(Oatmeal, Coffee),(Eggs, Coffee),(Pancakes,Coffee),$ $(Oatmeal, Tea),(Eggs, Tea),(Pancakes,Tea)\}$

8 0

3 years ago

The number of days, d, to build a house is given by

Alenkasestr [34]

Answer:

Step-by-step explanation: 7 more workers

6 0

3 years ago