MATHEMATICS MIDDLE SCHOOL

This week, Jolene withdrew $225 from her savings account. She made a deposit of $125 then bought $75.35 worth of groceries using her debit card. She now has $475.35. How much money did she have in her account at the beginning of the week?

Answers

Answer 1

Answer:

Answer:

675.7 dollars

Step-by-step explanation:

1) 475.35 + 75.35 + 125 = 675.7

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How many 2/5 are there in 4?
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Please help with this fast

40 percent of 112.5%

Answers

First 112% is 1.12 divide it by 100 to get .0112 then mutiply it by 40 to get .448 so .448 is the answer. Hope this helps.

What is 1024 written as a power of a number?

Answers

factor 1024
1024=2*2*2*2*2*2*2*2*2*2=2^10 (means 2 times itself 10 times)

the options re
A. 4^5
B. 512^2
C.254^4
D. 5^4
see if any of them can be simplified to 2^10

we know that
$x^{m^(n) } = x^(mn)$
so
4^5=(2^2)^5=2^(2*5)=2^10
true

he answer is A. 4^5

Your asnwer is

4^5

Why?

Because,

4^5 = 4 × 4 × 4 × 4 × 4 = 1024
4^5 = 1024

1024 written as a power of a number is 4^5.

Negative 5 divided by x minus 3

Answers

$(-5)/(x) -3$ is what you mean

Its Negative x minus 3. That's becuase negative divide by positive = negative.

(4-3√3)(2-√3)???? (the question marks signal the gap between the question and then me starting to distribute)4(2-√3)-3√3(2-√3)
I get stuck here!! Please help

Answers

You have two binomials. I would just FOIL them:

First:   4 x 2 = 8

Outside: 4 (-√3) = -4√3

Inside:   -3√3 (2) = -6√3

Last:   -3√3 (-√3) = 9

Addummup: 8 - 4√3 - -6√3 + 9 = 17 - 10√3

(4-3√3)(2-√3)
(4 - 3√3)(2 - √3) -> 4 x 2 = 8
(4 - 3√3)(2 - √3) -> -3√3 x 2 = -6√3
(4 - 3√3)(2 - √3) -> 4 x -√3 = -4√3
(4 - 3√3)(2 - √3) -> -3√3 x -√3 = 3√3 x √3 = √9√3 x √3 = √27 x √3 = √81 = 9

∴ (4-3√3)(2-√3) = 8 - 6√3 - 4√3 + 9

8 - 6√3 - 4√3 + 9
= 17 - 6√3 - 4√3
= 17 + (- 6 - 4)√3
= 17 - 10√3

Without decimals, you cannot go any further.
Tell me if I was confusing at all :)

UPDATED... AGAIN...

23.069 rounded to the nearest hundredth

Answers

23.07

Because 23.069 the 9 is higher than five and it will bring the hundredth place 1 number higher hope that helps!!!

23.069 rounded to the nearest hundredth is 24.000

What is the value of the coefficient 2x^3+18x^2-18x-162=2(x+k)(x-k)(x+9)

Answers

The polynomial
$2x^3+18x^2-18x-162=(2x^3+18x^2)-(18x+162)=$
$=2x^2(x+9)-18(x+9)=2(x+9)(x^2-9)=2(x+9)(x+3)(x-3)$ .
Then k=3.