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3 years ago

How many times 700 great then 70

Mathematics

2 answers:

Mariulka [41]3 years ago

5 0

70 X 10 =700

Therefore, it is 10 times greater than 70.

Ludmilka [50]3 years ago

3 0

If you are asking how many times is 700 greater than 70, then the answer would be 10 times.

70 * 10 = 700

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What is the value of y in the sequence below? 2,y,18, -54,162,

snow_lady [41]

First, let's check if the sequence is geometric or arithmetric.

If arithmetric, the sequence will have common difference.

Arithmetric

$\displaystyle \large{a_{n + 1} - a_n = d}$

d stands for a common difference. Common Difference means that sequences must have same difference after subtracting.

Geometric

$\displaystyle \large{ \frac{a_{n + 1}}{a_n} = r}$

r stands for a common ratio.

To find the value of y, you can check the sequence. If we try subtracting the sequences, the differences are different. That means the sequences are not arithmetric. That only leaves the geometric sequence.

Let's check by dividing sequences.

We have:

2,y,18,-54,162,...

Let's check by divide -54 by 18 and 162 by -54. We need to divide more than one so we can prove that the sequence is geometric.

$\displaystyle \large{ \frac{ - 54}{18} = - 3 } \\ \displaystyle \large{ \frac{ 162}{ - 54} = - 3}$

Hence, the sequence is geometric.

Because the common ratio is -3. Let these be the following:

$\displaystyle \large{ a_{n + 1} = y } \\ \displaystyle \large{ a_n = 2 } \\ \displaystyle \large{ r = - 3 }$

From the:

$\displaystyle \large{ \frac{a_{n + 1}}{a_n} = r}$

Substitute the values in.

$\displaystyle \large{ \frac{y}{2} = - 3}$

Multiply the whole equation by 2 to isolate y.

$\displaystyle \large{ \frac{y}{2} \times 2 = - 3 \times 2} \\ \displaystyle \large{ y = - 6}$

Therefore, the value of y is -6.

7 0

2 years ago

The difference of two numbers is 15. Five times the smaller is the same as 9 less than twice the larger. Find the numbers

Usimov [2.4K]

Answer:

x= -13

y= -28

Step-by-step explanation:

To find the two numbers, write a system of equations with x as one number and y as another:

x-y=15

5x=2y-9

Use substitution to substitute one equation into another. Then solve for the variable.

x=15+y into 5x=2y-9

becomes

5(15+y) = 2y-9

75+5y = 2y- 9

75+3y= -9

3y = -84

y= -28

To find x, substitute y= -28 into one equation.

x - (-28) = 15

x+28 =15

x = 15-28

x=-13

6 0

3 years ago

Help SOS LOTS OF SOS

Galina-37 [17]

Answer:

i think its 12 :)

Step-by-step explanation:

20 + 48 = 68

180 - 68 = 112

20 + 48 + 112 = 18 (a full triangle!)

8 0

3 years ago

Read 2 more answers

Wich number is larger 40\100 or 5\10

stepan [7]

Answer:

5/10

Step-by-step explanation:

5/10 as a decimal is 0.5, and 40/100 as a decimal is 0.4 (or 0.50 and 0.40, it doesnt make a difference) which means 5/10 is bigger

8 0

3 years ago

Which graph represents the solution to the system of inequalities? x2 - 4y2 < 16 y< 2x

wel

The graph is 6-3 over 8 yw

8 0

3 years ago