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Stels [109]
3 years ago
7

Each of the digits 7, 5, 8, 9 and 4 is used only one to form a three digit integer and a two digit integer. If the sum of the in

tegers is 555, how many such pairs of integers can be formed?A. 1B. 2C. 3D. 4E. 5
Mathematics
1 answer:
Advocard [28]3 years ago
7 0

Answer:

B. 2

Step-by-step explanation:

The 1st pair is 457 and 98

457 + 98 = 555

The 2nd pair is 498 and 57

498 + 57 = 555

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In the diagram, the radius of the outer circle is
JulijaS [17]

the value of x is 8 cm.

<u>Step-by-step explanation:</u>

Correct Question : In the diagram, the radius of the outer circle is 2x cm and the radius of the inside circle is 6 cm. The area of the shaded region is 220π cm2. What is the value of x? Enter your answer in the box.

We have ,

the area of a circle =  πr²

the outer circle area = \pi(2x)^2 =4\pi x^2

the inside circle area = \pi (6)^2= 36\pi

According to Question,

the outer circle area - the inside circle area = he shaded region

⇒ \pi (4x^2)-36\pi =220\pi

⇒ x^2-9 =55

⇒ x^2=64

⇒x =\sqrt{64}=8

Therefore , the value of x is 8 cm.

5 0
3 years ago
Please help with math question
Naddik [55]
1- Solution using graphs:
Take a look at the attached images.
The red graph represents the first given function while the blue graph represents the second given function.
We can note that the two graphs are the same line (they overlap).
This means that any chosen point on one of them will satisfy the other.
This means that there are infinite number of solutions to these two equations.

2- Solution using substitution:
The first given equation is:
y = -5x + 3 ...........> equation I
The second given equation is:
2y + 10x = 6 ...........> equation II

Substitute with I in II and solve as follows:
2(-5x+3) + 10x = 6
-10x + 6 + 10x = 6
0 = 0
This means that there are infinitely many solutions to the given system of equations.

Hope this helps :)

3 0
3 years ago
Which figure will this net make
Hitman42 [59]

Answer:

C

Step-by-step explanation:

Rectangle base, tiny triangle sides, but rectangle top

6 0
2 years ago
Read 2 more answers
HELPPPP <br><br> what is this
Alchen [17]

Answer:

Pls be specific with your question

8 0
2 years ago
Find the missing number + 8 = 4​
erik [133]

Answer:

-4

Step-by-step explanation:

5 0
3 years ago
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