MATHEMATICS HIGH SCHOOL

(15−x)∙4=10
pls pls answer asapppp

Answers

Answer 1
Answer:

(15-12.5)*4=10

x=12.5

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Ann and Betty together have $60. Ann has $9 more than twice Betty's amount. How much money does each have?

Answers

first and mainly keep that 9 one side,
There are 2 people involved Ann and Betty, Then divide the TOTAL AMOUNT BY THE NUMBER OF PEOPLE.
· Then it will look like $60÷2= $30 per person.
In this case everyone has equal amount of money, but the question say Ann has $9 more than Betty's. so, Ann≈ $30 +$9= $39.
                                                       Betty≈ $30-$9= $21
         Because loses money because Ann has more,                        
                                      TOTAL=Ann+Betty
                                       $60= $39+$21

Final answer:

Betty has $17 and Ann has $43.

Explanation:

This problem is a basic algebraic equation. Let's denote Betty's amount as x. From the problem information, we know that Ann's amount is twice Betty's plus $9, so we can denote it as 2x + $9. It's also told in the problem that together they have $60, so we can form the equation: x (Betty's money) + 2x + $9 (Ann's money) = $60.

Solving this equation, we combine like terms, which gives us 3x + $9 = $60. Subtract $9 from both sides to get 3x = $51. Divide each side by 3, we get x = $17. So, Betty has $17. We substitute x = $17 into the equation 2x + $9 to find Ann's money, which gives us 2*$17 + $9 = $43. So, Ann has $43.

Learn more about Algebra here:

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When negative five is subtracted from a number the result is 10 find the number15
5
-5
-15

Answers

Answer: second option.

Step-by-step explanation:

Let be "x" the unknown number.

According to the information provided in the exercise, 10 is the result of the subtraction of "x" and -5.

Based on this, you can write the following equation:

x-(-5)=10

To find the value of "x" you must remember the multiplication of signs:

(+)(+)=+\n(-)(-)=+\n(-)(+)=-

Then:

x-(-5)=10\n\nx+5=10

Finally, subtracting 5 from both sides of the equation, you get:

x+5-(5)=10-(5)\n\nx=5

Answer:

x - (-5) = 10

x = 5

My final answer is 5

Step-by-step explanation:

What number can be added to -2 to get a
sum of O?
A -2
во
C 2

Answers

Answer:

C. 2

Step-by-step explanation:

-2+2=0

its the same like 2-2=0 when you change the places of the numbers

Answer:

c. 2

Step-by-step explanation:

Here is a problem from way back from my bro's math (elementary)3 cats eat 3 cats in 3 minutes
how long does it take for 100 cats to eat 100 fish?

show all work




(hint: answer is not 100 minutes, and if you answer 100 minutes you are wrong and will be reported)

Answers

3 cats -------------- 3  fish -------------3 minutes
100 cats------------100 fish -----------  x

The cats and fish are variables directly proportional, the cats and the time are varibles inversely proportional,
Therefore, 

3 cats * 100 fish * x=100 cats * 3 fish * 3 minutes
x=(100 cats * 3 fish * 3 minutes) / (3 cats * 100 fish)
x=3 minutes.

Answer: the time will be 3 minutes. 

At what point does the graph of 5x + 4y = 12 intersect the y-axis?

Answers

first step is to simplify the equation or calculate..... so the formate of y=mx+b
4y=-5x+12
y=-5/4+3

so slope m=-5/4
b=3
count 3 on the y intercept from zero going up 3,put a dot there . then go down -5 from 3 and then count right 4 and put a dot there.if you need more help ask me or message me.
In there x=0 so 4y=12 or y=3. The point is (0,3)
That x=0 is the definition for x intersecting the axis.
We're at the same lesson now, lol.

a flower bed is in the shape of triangle with one side twice the length of the shortest side and the third side is 28 feet more thanthe length of the shortest side. find the dimensions if the perimeter is 184 feet.

Answers

x - the shortest side
2x
x + 28

The sum of these must be equal to the perimeter of the flower bed, so 

x + 2x + x + 28 = 184

4 x + 28 = 184  Combined like terms

4x = 156  Subtracted 28 from both sides

x = 39  Divided both sides by 4.

So the dimensions are 39 feet, 78 feet, and 67 feet

Final answer:

The problem involves finding the sides of a triangle given the perimeter and conditions for each side. After setting up an equation based on the conditions and solving for x, which is assumed to be the shortest side, the sides of the triangle are found to be 39 feet, 78 feet, and 67 feet.

Explanation:

This is a mathematical problem involving triangles and perimeter. The perimeter of a triangle is the sum of all of its sides. In your case, if we assume the shortest side to be x feet, then the other two sides, according to the question, are 2x feet and x+28 feet. Since the perimeter is 184 feet, these can be added together and set equal to 184, as such:

x + 2x + (x+28) = 184.

Add together like terms:

4x + 28 = 184.

Subtract 28 from both sides:

4x = 156.

Divide both sides by 4:

x = 39 feet.

Therefore, the sides of the triangle are 39 feet, 78 feet (2 * 39), and 67 feet (39 + 28).

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