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2 years ago

CAN SOMEONE PLEASE HELP ME PLEASE PLEASE PLEASE

Mathematics

1 answer:

Goshia [24]2 years ago

3 0

Answer:

628

Step-by-step explanation:

Deposit means money is going into the bank so add 129 onto 499

(b) writing a cheque means money is coming out of the bank so subtract 24 from your previous answer.

628 - 24 = 604

(d) round 604 to the nearest hundred

(it's between 600 and 610 but which is it closest to?)

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The expression −50x+100 represents the balance, in dollars, of a bank account after x months. What is the rate of change, in dol

Rom4ik [11]

Given expression = −50x+100.

Let us understand the structure of the above expression.

Actually above expression is written in slope-intercept form.

y= mx+b, where m is the slope and in other words we call a slope " rate of change", and b is the y-intercept, we take b as fix value.

If we compare −50x+100 by slope-intercept form mx+b, we can see that coefficent of x is -50 there,

Therefore, m=-50.

So, the rate of change of the bank account balance(in dollars per month) = $50/month.

And because it is a negative 50, so we could say the rate of decrease per month is $50.

5 0

3 years ago

Solve formula v=kt/p for t

juin [17]

Work backwards and the answer is :
t= Vp/k

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3 years ago

Add (7х2 – 3x) + (5х – 6).

Masja [62]

Option C: The solution is $7x^{2} +2x-6$

Explanation:

The given expression is $(7x^{2} -3x)+(5x-6)$

We need to solution of the given expression.

The solution of the given expression can be determined by adding the two expressions.

Let us remove the parenthesis.

Thus, we have,

$7x^{2} -3x+5x-6$

Adding the like terms, we have,

$7x^{2} +2x-6$

Thus, the solution is $7x^{2} +2x-6$

Hence, Option C is the correct answer.

5 0

3 years ago

Find the solution to the equation below.<br> 2x^2+3x-20=0

mariarad [96]

Answer:

x = -4, 5/2

Step-by-step explanation:

A quadratic can be solved may ways, including graphing, factoring, and the quadratic formula. You can also check possible answers by making use of the relationships between solutions and the coefficients.

A graph is attached. It shows the solutions to be -4 and 5/2.

When factored, the equation becomes ...

(2x -5)(x +4) = 0 . . . . . has solutions x=-4, x=5/2 (these make the factors zero)

Using the quadratic formula, the solutions of ax^2 +bx +c = 0 are found from ...

x = (-b±√(b²-4ac))/(2a)

x = (-3±√(3²-4(2)(-20))/(2(2)) = (-3±√169)/4 = {-16, +10}/4

x = {-4, 5/2}

For ax^2 +bx +c = 0, the solutions must satisfy ...

product of solutions is c/a = -20/2 = -10

Only the first and last choices have this product.

sum of solutions is -b/a = -3/2

Only the first choice (-4, 5/2) has this sum.

8 0

3 years ago

A data value is considered _______ if its z-score is less than minus2 or greater than 2.

elena-14-01-66 [18.8K]

Answer:

Unusual

Step-by-step explanation:

we know that

The z-score is a measure of how close the given data point is to the mean of the values given with the standard deviation

if its z-score is greater than or equal to -2, or less than or equal to 2., then the data value is considered ordinary

if its z-score is less than -2 or greater than 2, then the data value is considered unusual

5 0

3 years ago