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3 years ago

The sum of j and 47 is 55.

Mathematics

2 answers:

lord [1]3 years ago

8 0

Answer:

j = 8

Step-by-step explanation:

Since the sum of j and 47 is 55, you would add j and 47. But since u need to find out j, you would subtract 55 - 47 which equals 8.

Check:

8 + 47 = 55 :)

Hope this helps!

mote1985 [20]3 years ago

6 0

Answer:

j=8

Step-by-step explanation:

j + 47 = 55

55-47=8

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Chapter : Circles 1 question

erica [24]

We can solve this question in 2 ways: either using degrees or converting the degrees into radians.

Since, the question says degrees itself and there is no specification of using radians only, so I have solved it using degrees itself.

Part (a):

Perimeter of sector ORS = 2*Radius + Arc RS = 2*21 + $60* \frac{ \pi }{180} *21 = \frac{ \pi }{3} *21 = 7 \pi$

Part (b):

Area of sector ORS = $\frac{60}{360} * \pi * 21^{2} = \frac{1}{6} * \pi *21*21= \frac{147}{2} \pi$

Area of sector POQ = $\frac{36}{360} * \pi * 14^{2} = \frac{1}{10} * \pi * 196 = \frac{196}{10} \pi$

Thus, area of shaded region
= Area of sector ORS - Area of sector POQ

= $\frac{147}{2} \pi - \frac{196}{10} \pi = \frac{735 - 196}{10} \pi = \frac{539}{10} \pi = 53.9 \pi$

5 0

3 years ago

Y = ax + 4x - 2 is x= 1. What is the value of a?

puteri [66]

Y = ax + 4x - 2 x= 1
y = a(1) + 4(1) -2
y = a + 2
y - 2 = a

6 0

3 years ago

Solve the system of equations. \begin{aligned} & -10x+3y = 5 \\\\ & x=y-4 \end{aligned} −10x+3y=5 x=y−4

Ksenya-84 [330]

Answer:

x = 1

y = 5

Step-by-step explanation:

You can use either substitution or elimination for this problem. I will use substitution.

Step 1: Replace x in the 1st equation

-10(y-4) + 3y = 5

-10y + 40 + 3y = 5

-7y = -35

y = 5

Step 2: Plug y into an original equation to find x

x = 5 - 4

x = 1

And you have your final answers!

7 0

3 years ago

Pls help i need this asap

Zielflug [23.3K]

Answer:

Let x = # of commercials

y = # of movies

System of Equations:

x + y = 90

40x + 110y = 500

Step-by-step explanation:

We have to set our variables before we start solving. After setting the variables, we can set up the equations. If x = # of commercials and y = # of movies, then we can assume x + y = 90, as there have been a total of 90 commercials and movies played altogether. Then, we know that their worth is $500, so the price of all the commercials played and the price of all the movies played (which is 40x + 110y) sum to $500.

8 0

2 years ago

The current United States population is about 314,000,000 people. If an iPad costs $500.00, what would be the total cost of purc

Helga [31]

Answer:

157,000,000,000

Step-by-step explanation:

314,000,000 X 500

5 0

2 years ago