squares, cubes and circles

Answer:

emma is 20 because 49-9/2=40/2 which is 20

Step-by-step explanation:

Answer:20 years old

Step-by-step explanation:

49 = 20 + 29

40/2 = 20

9 years older than 20 is 29

The value of the expression in can be estimated by using LCM and algebraic rules and it comes 3.64.

To rewrite the equation 2/3x - 2 = 3/7 without fractions, we need to eliminate the fractions by multiplying both sides of the equation by the least common multiple (LCM) of the denominators.

The denominators in this equation are 3 and 7, and their LCM is 21. So, we will multiply both sides of the equation by 21:

21 x (2/3x - 2) = 21 x (3/7)

Simplifying the left-hand side, we distribute the 21 to both terms:

14x - 42 = 9

Adding 42 to both sides, we get:

14x = 51

Finally, dividing both sides by 14, we get

x = 3.64 (rounded to two decimal places)

Therefore, the equation 2/3x - 2 = 3/7, rewritten without fractions, is 14x - 42 = 9. The solution to the equation is x = 3.64.

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Answer:

______the answer is Y=0.25X+3

Answer: B) 40 miles for 5 hours

Divide both values by 5 and we'll simplify that to 8 miles for 1 hour. This is the same as saying 8 miles per hour, or 8 mph.

The ratio 8:1 is read as "8 to 1", meaning the first value is 8 times that of the second value. Note how 40 is 8 times that of 5, ie 40 = 8*5.

Answer:

i can't understand sorry

tanong mo sa iba

Answer:

21,753 is divisible by 3 and 9

Step-by-step explanation:

A number is  divisible by 2 if last digit of a number is 0, 2, 4 ,6 ,8

A number is  divisible by 3 if sum of digits is divisible by 3.

A number is  divisible by 5 if last digit of a number is 0 or 5

A number is  divisible by 9 if sum of digits is divisible by 9

A number is  divisible by 10 if last digit is 0.

So,  according to these rules  option (a) 3 ,9 is correct

Therefore , 21,753 is divisible by 3 and 9.          

Answer:

x = 8

Step-by-step explanation:

20:30 = 2:3 = 1:1.5

18×1.5 = 27

27 = 2x +11

16 = 2x

Answer:

x+y = 1

x = 3, y = -2

Step-by-step explanation:

Given the expressions

x-y = 5

x²-y² = 5

From 2:

x²-y² = 5

(x+y)(x-y) = 5 .... 3

Substitute equation 1 into 3;

(x+y)(5) = 5

Divide both sides by 5

x+y = 5/5

x+y = 1

b) To deduce x and y, we will solve the equation below simultaneously

x-y = 5

x+y = 1

Add both equations

x+x = 5+1

2x = 6

x = 6/2

x= 3

Substitute x = 3 into equation 1

Recall from 1:

x-y = 5

3-y = 5

y = 3-5

y = -2

Hence x = 3, y =-2

Answer:

D

2+3 is not a ratio it equals to 5

Answer:

1:3

That is it!

Answer:

<fgh <gfh

Step-by-step explanation:

Answer:

235 * 10^7

Step-by-step explanation:

HOPE THIS HELPED

Answer:

6

Step-by-step explanation:

42 bracelets per 7 days=

42/7= 6 bracelets per day

Answer:

[tex](x - y)(x + y + 1)[/tex]

Step-by-step explanation:

[tex]x(x + 1) - y(y + 1)[/tex]

[tex]=> x^{2} + x - y^{2} - y[/tex]

Lets re-arrange it.

[tex]=> x^{2} - y^{2} + x - y[/tex]

Now , lets expand x² - y².

[tex]=> (x + y)(x - y) + (x - y)[/tex]

Taking ( x - y ) common ,

[tex]=> (x - y)(x + y + 1)[/tex]

Answer:

[tex]x(x + 1) - y(y + 1) \\ → {x}^{2} + x - {y}^{2} - y \\→( {x}^{2}- {y}^{2}) + (x - y) \\→ (x - y)(x + y) + (x - y) \\→ \boxed{ (x - y)(x + y + 1)}✓[/tex]

Answer:

Y=-1

Step-by-step explanation:

Substitute 30 into x, now the equation is

y = 14 -0.5(30)

Now solve the RHS for the answer.

y = -1

Answer:

Since 36=0 is false, there is no solution.

D. No Solution

Answer:

15 divided by 3 = 5

Step-by-step explanation:

21 divided by 3 = 7

6 divided by 3 = 2

Have a Good Day : )

Answer:

5

Step-by-step explanation:

y=x/3

substituting x=15 in the above equation

y=15/3

y=5

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Answer:

x[tex]\geq[/tex]3

Step-by-step explanation:

You add 5 to both sides. Then divide it by 4 to get your answer.

Answer:

3g

Step-by-step explanation:

Answer:

17

Step-by-step explanation:

AC = AB + BC

Since we know what each variable equals, we can write out the equation as shown:

47 = 5x + 3x - 1

Combining like terms:

47 = 8x - 1

Add 1 on both sides:

48 = 8x

Divide 8 on both sides:

X = 6

Now that we know what X equals, we can solve BC.

BC = 3(6) - 1

BC = 18 - 1

BC = 17

Therefore BC = 17.

Answer:

- 5

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 7x - 5 ← is in slope- intercept form

with y- intercept c = - 5

The y-intercept of the line y = 7x - 5 is -5.

To find the y-intercept of the line represented by the equation y = 7x - 5, we need to determine the value of y when x is equal to zero. The y-intercept represents the point where the line crosses or intersects the y-axis.

In this case, when we substitute x = 0 into the equation, we get:

y = 7(0) - 5

y = -5

Therefore, the y-intercept of the line y = 7x - 5 is -5. This means that the line intersects the y-axis at the point (0, -5), with the y-coordinate being -5. Graphically, this indicates that the line crosses the y-axis at a height of -5 units.

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Answer:

11

Step-by-step explanation:

A positive will always be a positive. 2 positives is still positive. However, 2 negatives is a positive.

Answer:

15840 feet

Step-by-step explanation:

There are 5280 feet in a mile.

5280 * 3 = 15840 feet

Answer:

x=32 so one solution only

Step-by-step explanation:

6(x-8)+10=5x-6

6x-48+10=5x-6

6x-38=5x-6

x-38=-6

x=32

Therefore, the equation only has one solution which is x=32

Answer:

This question has 1 solution.

Step-by-step explanation:

Solve for X

First, distribute:

6x - 48 +10 = 5x - 6

Second, combine like terms:

6x - 38 = 5x - 6

Third, move like signs to one side:

x = 32

Answer:

x = 7, -5

Step-by-step explanation:

Answer:

X = 5, -7

hope this helps.

Answer:

Second Job

Step-by-step explanation:

I would take the second job because you will make more. And it has sick time in addition to vacation.

First job:

$15x40=$600 then add in overtime which will be paid at $22.50 (time and half) so $22.50x5=$112.50. Add the two together $600+112.50=$712.50 weekly.

Second job:

$38,000/52=$730.77 weekly

Answer:

A

Step-by-step explanation:

because your not describing how the variables are related if you don't have the variables

Answer:

y+4=-3(x+1)

Step-by-step explanation:

point slope form = y-y1=m(x-x1)

so plug in the numbers

y - -4 = -3 (x - - 1)

if there are two negatives it becomes a positive so your final answer is y + 4 = -3 (x +1)

Hope this helps

Answer:

Simplify both of them

Step-by-step explanation:

After simplify we get both ratio 2:7 and 10000:35000 are equal.

What is Ratio?

A ratio indicates how many times one number contain in another number.

Given that;

Both ratio are;

2:7 and 10000:35000

Now, Solve the ratio for simplifying;

Ratios are 2:7 and 10000:35000

First ratio is 2 : 7.

Clearly, This is already in simplest form.

Second ratio is 10000:35000

It can be written as;

10000:35000 = 10000/35000

                     = 10/35

                     = 2/7

Thus, After simplify we get both ratio 2:7 and 10000:35000 are equal.

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Answer:

Step-by-step explanation:

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Answer:

225

Step-by-step explanation: