MATHEMATICS HIGH SCHOOL

15. Angle AOD has what measurement according to the protractor?

Answers

Answer 1

Answer:

Answer:

90 degrees

Step-by-step explanation:

We can see in the attachment that AOD extends from 0 degrees to 90 degrees, creating a 90 degree or right angle.

Hope this helps! :)

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Jude has seven times as many dimes as nickels their value is $5.25 how many nickels does he have.49
15
7

Answers

Let dimes be represented by d and n for nickels;
1 dime= 0.1 dollars
1 nickel=0.05 dollars
0.1d+0.05n=5.25
d=7n
so,
0.1(7n)+0.05n=5.25
0.7n+0.05n=5.25
0.75n=5.25
n=7
There are 7 nickels and 49 dimes

1 nickel = $0.05
1 dime = $0.10

n - number of nickels
7n - number of dimes

A equation:

0.05n + 0.1 · 7n = 5.25
0.05n + 0.7n = 5.25
0.75n = 5.25 |divide both sides by 0.75
n = 7

Answer: He have 7 nickels.

What is the name of the guy who invented the multiplication tables?

Answers

Hello,

It seems that multiplication tables were invented by Pythogore .

Later in the middle ages , a abacus has been invented by a guy who where living near my house : Gerbert d'Aurillac who became pape (Sylvestre 2 ,945-1003).

A man can paint one house in 12 hours. At this rate, how many houses could 18 men paint in 6 hours? A) 3 houses B) 6 houses C) 9 houses D)

Answers

Answer:

The correct option is C. 9 houses could 18 men paint in 6 hours.

Step by step explanation:

Let the number of houses paint by 18 men in 6 hours be x.

One man can paint one house in 12 hours.

The part of house painted by a man in 1 hour is $(1)/(12)$ .

The part of house painted by a man in 6 hour is

$(6)/(12)=(1)/(2)$

The total number of men is 18. Therefore the number of houses painted by 18 men is

$x=(1)/(2)* 18=9$

Therefore correct option is C. 9 houses could 18 men paint in 6 hours.

If carpet costs $12 per square yard. How much will it cost to carpet a room that is 180 square feet?

Answers

12$ per 3×3 if its square yard

so 180 ÷ 9 = 20

20×12$=240$

Answer:

12$ per 3×3

180 ÷ 9 = 20

20×$12=$240

Step-by-step explanation:

Whats the distance -6.1 and 8.4

Answers

Answer:

Step-by-step explanation:

Answer:14.5

Step-by-step explanation:

Medical researchers have determined that for exercise to be beneficial, a person’s desirable heart rate, R, in beats per minute, can be approximated by the formulasR=143-0.65a for women
R=165-0.75a for men,

where a represents the person’s age. What would the desirable heart rate be for a 46 year old woman?
a. 113 beats per minute
b. 172.9 beats per minute
c. 143.7 beats per minute
d. 63 beats per minute