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3 years ago

Help due in 10 min ????

Mathematics

2 answers:

klio [65]3 years ago

8 0

Answer:

7×7×7= 343

Step-by-step explanation:

hope this helps

nalin [4]3 years ago

5 0

Answer:

7 x 7 x 7

Step-by-step explanation:

When raising a number or expression to an exponent, you are really just multiplying the number or expression by itself.

That means 7³ is 7 multiplied by itself 3 times.

7 x 7 x 7

Hope this helps!

You might be interested in

How can you tell if 78 is divisible by 2 3 OR 6

noname [10]

If its an even number its divisible by 2 if you add the answer (7+8) and it equals a number (7+8=15) divisible by 3 then 78 is divisible by 3 and if it is divisible by both 2 and 3 then you know it is divisible by 6 but you have to be able to divide the number by BOTH 2 AND 3

4 0

3 years ago

Create a linear regression equation that can be used to model the amount of money in the account (the balance), y, based on the

Karolina [17]

The regression equation is $\^y = 1.56\^x + 1.29$ , and it will take 31 weeks to have $50.00

(a) The linear regression equation

To do this, we make use of a graphing calculator;

From the graphing calculator, we have the following calculation summary:

The sum of X = 45
The sum of Y = 83
Mean X = 4.5
Mean Y = 8.3
Sum of squares (SSX) = 82.5
Sum of products (SP) = 128.5

The regression equation is then represented as:

$\^y = b\^x + a$

Where:

$b = \frac{SP}{SSX}$ and $a = M_Y - bM_X$

So, we have:

$b = \frac{128.5}{82.5}$

$b = 1.55758$

Approximate

$b = 1.56$

$a= 8.3 - (1.56 \times 4.5)$

$a= 1.29091$

Approximate

$a= 1.29$

This means that, the regression equation is $\^y = 1.56\^x + 1.29$

(b) Predict the time to have $50.00

This means that:

$\^y = 50$

So, we have:

$50 = 1.56\^x + 1.29$

Subtract 1.29 from both sides

$48.71 = 1.56\^x$

Divide both sides by 1.56

$31.22 = \^x$

Rewrite as:

$\^x = 31.22$

Approximate

$\^x = 31$

Hence, it will take 31 weeks to have $50.00

Read more about linear regression models at:

brainly.com/question/14585820

8 0

2 years ago

The difference of two numbers is 6 and their product is 55 what are the two numbers

Evgesh-ka [11]

Let one number be x.
The other number is x-6

Product of the number is 55
x(x-6) = 55
x² - 6x - 55 = 0
 (x + 5)(x - 11) = 0
x = -5 or x = 11

x = -5
x - 6 = -11

x = 11
x - 6 = 5

Answer: The two numbers are either -5 and -11 or 5 and 11.

4 0

4 years ago

( Write the word sentence as an equation.))) 25 is 9 more than a number x.

elena-14-01-66 [18.8K]

Answer:

25>x<9

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

The difference of twice a number and 3 is 11

Softa [21]

Let's break this down:

The difference: Something's gotta be subtracted
Twice a number: So 2 times a number, or n
and 3: So we gotta subtract 2n and 3
is 11: The final answer is 11
So altogether is:

2n - 3 = 11

7 0

4 years ago