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3 years ago

How do I solve this?

Mathematics

2 answers:

My name is Ann [436]3 years ago

7 0

Answer:

Step-by-step explanation:

x^2 + 2y^2

Let x=3 and y =2

3^2 + 2 ( 2)^2

Exponents first

9 + 2* 4

Then multiply

9+8

Then add

yulyashka [42]3 years ago

6 0

Answer:

Step-by-step explanation:

● x^2 + 2y^2

Replace x by 3 and y by 2

● (3)^2 + 2×(2)^2

● 9 + 2 × 4

● 9 + 8

● 17

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9) The base and the height of a rectangle are represented by the expressions below.

Nuetrik [128]

9 :

Given,
Perimeter = 88 units
Base = x + 4
Height = x - 6

= > Perimeter of Rectangle = 2( base + height )

= > 88 = 2{ ( x + 4 ) + ( x - 6 ) }

= > 88 / 2 = { x + 4 + x - 6 }

= > 44 = 2x - 2

= > 46 = 2x

= > 46 / 2 = x

= > 23 = x

Therefore,

Length of base = ( x + 4 ) units = ( 23 + 4 ) units = 27 units

Length of height = ( x - 6 ) units = ( 23 - 6 ) units = 17 units

10 :

Given,
First integer = x
Second integer = x + 2
Third Integer = x + 4

Given that the sum of all integers is 36

= > ( x ) + ( x + 2 ) + ( x + 4 ) = 36

= > x + x + 2 + x + 4 = 36

= > 3x + 6 = 36

= > 3x = 30

= > ( 3x ) ÷ ( 3 ) = ( 30 ) ÷ ( 3 )

= > x = 10

$\text{Hence, }$
Value of first integer = x = 10

3 0

2 years ago

1. A triangular swimming pool is an isosceles triangle in shape. The two

Nady [450]

Answer:

Side a = 35ft

Side b = 35ft

Side c = 20ft

Step-by-step explanation:

The formula for the perimeter of a triangle = Side a + Side b + Side c

In an isosceles triangle, 2 sides are equal to each other.

So, Side a = Side b

In the question, we are told that:

The two equal sides are each 5 ft less than twice the length of the third side.

Hence,

a = 2c - 5

b = 2c - 5

P = 90ft

P = a + b + c

90 = 2c - 5 + 2c - 5 + c

Collect like terms

90 = 5c - 10

90 + 10 = 5c

100 = 5c

c = 100/5

c = 20

The length of the third side = 20ft

a = 2c - 5

= 2 × 20 - 5

= 40 - 5

= 35 ft

b =2c - 5

= 2 × 20 - 5

= 40 - 5

= 35 ft

Therefore,

Side a = 35ft

Side b = 35ft

Side c = 20ft

3 0

3 years ago

Roger manages an ice cream stand. He keeps track of how many minutes each customer stands in line.

aalyn [17]

<span>0.5 = 2
0.75 = 2
1.0 = 3
1.25 = 4
1.5 = 5
2.0 = 2
2.25= 1
2.5 = 1

You should always count the numbers you used to make sure the total matched the total number of data. In this case, there are 20 numbers, and the total is also 20.</span>

5 0

3 years ago

Read 2 more answers

Find the value of x.

Zolol [24]

Answer:

Step-by-step explanation:

8 0

3 years ago

Point P on the number line shows Lara's score after the first round of a quiz: A number line is shown from negative 8 to 0 to po

Luda [366]

Answer:

The correct group of answer is D) 3 + (−4) = −1, because −1 is 4 units to the left of 3

Step-by-step explanation:

Consider the provided information.

Point P on the number line shows Lara's score after the first round of a quiz:

Point P is shown on 3.

That means after the first round her total was 3.

In round two, she lost 4 points.

Therefore, she score −4 points in 2nd round

To find the total points at the end of round 2, we need to add -4 to 3.

3+(−4)=−1

Here −1 is 4 units to the left of 3.

Hence, the correct group of answer is D) 3 + (−4) = −1, because −1 is 4 units to the left of 3

3 0

3 years ago

Read 2 more answers

How do I solve this?​

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