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Yuliya22 [10]
3 years ago
13

Winnie wrote the following riddle.I am a number between 60 and 100.My ones digit is two less than my tens digit.I am a prime num

ber.
Mathematics
1 answer:
Kazeer [188]3 years ago
5 0

Answer:

79

Step-by-step explanation:

60<xy<100

y -2 =x


if it is prime

y cannot be even

so y could be      1,3,5,7,9

x would then be 9,1,3,5,7

but to be between 60 and 100

x must be 7 or 9

so the number must be 79 or 57

57 is not prime so

the number is 79

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allsm [11]

Answer:

  • 6.75 square units

Step-by-step explanation:

The triangle has the same base and height as the rectangle.

<u>Triangle</u> area:

  • A = 1/2bh

<u>Rectangle area: </u>

  • A = bh

<u>The shaded area is equal to half of the area of the rectangle:</u>

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4 0
3 years ago
Mixed numbers and improper fractions are often the result of measurements or calculations.
lesya [120]
The answer will mostly be true if you know the answers


3 0
3 years ago
Read 2 more answers
Write an expression in simplest form for the perimeter of each figure
Juli2301 [7.4K]
QUESTION 12

The given figure has five unequal sides.

The perimeter is the distance around the figure.

So we add all the lengths of the sides of the rectangle to get,

Perimeter = 5x + 4x + 2.8y + 2x + 2.2y

We regroup the like terms to obtain,

Perimeter = 5x + 4x +2x + 2.8y + 2.2y

This will simplify to give us,

Perimeter = 11x + 5.0y

Perimeter = 11x + 5y

QUESTION 13

The given figure has two pairs of sides that are equal in length and three unequal sides.

The perimeter can be found by adding all the lengths of the sides of the of the figure.

This will give us

Perimeter = 6b + 5a + 3b + 4 + 3a + 2b + 5a

We regroup like terms to obtain,

Perimeter = 6b + 2b+ + 3b + 5a + 5a +3a + 4 +

This finally simplifies to ,

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Perimeter = 11b + 13a + 4 +

QUESTION 14

This plane figure has four sides that are equal to 4j and two sides that are equal to 2h.

We add all the lengths of the sides of the plane figure to get,

Perimeter =4j + 4j+ 4j+ 4j + 2h + 2h

This will simplify to give us,

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6 0
3 years ago
Samaria has 6 more than three times as many pieces of candy as sydney. samaria has 36 pieces of candy. how many does sydney have
lesya [120]

For this case we have:

x: Number of candies that Sydney has

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We want to clear x:

3x = 36-63x = 30

x = \frac{30}{3}

x = 10

So, Sydney has 10 candies

Answer:

Sydney has 10 candies


4 0
3 years ago
Read 2 more answers
F (x) =2x -4; find f (-4)
NemiM [27]

Answer:

f(-4) = -12

Step-by-step explanation:

f(x)=2x-4

To calculate f(-4), we need to substitute x in our equation above with -4:

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Note that 2*(-4) = -8

Answer: f(-4) = -12

6 0
3 years ago
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