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Fynjy0 [20]
3 years ago
9

Examine the algebraic expression.

Mathematics
2 answers:
MArishka [77]3 years ago
8 0

Answer:

2 , 4 , 6

Step-by-step explanation:

EDGEEEEE frgthykl,kuyt5r4dwdcfghtrfedwadbfhtytre4w

NNADVOKAT [17]3 years ago
7 0

Answer:

2, 4, 6

Step-by-step explanation:

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What is 65% of 80 ??????????????
bazaltina [42]

Answer:

Step-by-step explanation:

65% of 80 is

65*80/100=52

4 0
3 years ago
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If the 16 boys in the classroom are 40% of the class how many students are there in the class
Galina-37 [17]

Answer:

56

Step-by-step explanation:

40+16=56

8 0
3 years ago
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The difference between two positive integers is 7 and the sum of their squares is 949. What are the numbers?
Darina [25.2K]

Answer:

25 and 18

Step-by-step explanation:

Let's say that the first number is x and the second one is y.

First, the difference between them is 7, so x-y=7

Next, the sum of their squares is 949, so x²+y² = 949

We have

x-y=7

x²+y²=949

One thing we can do to solve this problem is to solve for x in the first equation, plug that into the second equation, and go from there

Adding y to both sides in the first equation, we have

x = 7 + y

Plugging that into the second equation for x, we have

(7+y)²+ y² = 949

expand

(7+y)(7+y) + y² = 949

49 + y² + 7y + 7y + y² = 949

combine like terms

2y² +14y + 49 = 949

subtract 949 from both sides to put this in the form of a quadratic equation

2y² + 14y - 900 = 0

divide both sides by 2

y² + 7y - 450 = 0

To factor this, we want to find 2 numbers that add up to 7 and multiply to -450.

The factors of 450 are as follows:

1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 225, and 450.

Note that we want to find two numbers with a difference of 7, as one will have to be negative for the multiplication to end up at -450. Two numbers that stand out are 18 and 25. To make them add up to 7, 18 can be negative. We therefore have

y² + 25y - 18y - 450 = 0

y(y+25) - 18(y+25) = 0

(y-18)(y+25) = 0

Solving for 0,

y-18 = 0

add 18 to both sides

y=18

y+25 = 0

subtract 25 from both sides

y= -25

As the question states "two positive integers", this means that y must be positive, so y = 18. We know x-y=7, so

x-18 = 7

add 18 to both sides to isolate x

x = 25

7 0
3 years ago
Plsss help it’s due today in an hour!!! (test grade)
Rudik [331]

Answer:

the area is 50.24 cm^{2}.

Step-by-step explanation:

The formula to find area of a circle is A=πr^{2}. A is area, and r is for radius. Since we have the diameter here, we just need to divide by 2 to find the radius. 8÷2=4, so there, the radius is 4. Now we need to square 4, and do 4x4, which equals 16. Now to multiply 16 by π, or 3.14. 16 x 3.14 = 50.24. The final answer is 50.24 cm^{2}. Hope this helped! :]

8 0
3 years ago
Your commission is $60 for
klio [65]
It’s C becuase when you divide the 700$ by 200$, you will get 3.5. So you basically multiply it with 60$ and there you have your answer which is 60*3 + 60*0.5=210
7 0
3 years ago
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