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3 years ago

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Mr. Brown’s bank account is overdrawn $110.55 and he deposits $18 a week. His wife has a separate account and her account is als

o overdrawn $63.12 and she deposits $22.50 a week. How many weeks will it be before Mr. Brown’s wife has more in her account than her husband?

1 answer:

Basile [38]3 years ago

7 0

Answer:

y=mx+b sdi c xc xx cx cx cxc xc 87

Step-by-step explanation:

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The sum of 5 consecutive even numbers is 216. What is the third number in the sequence

alexandr1967 [171]

Hello from MrBillDoesMath!

Answer: NO solution possible!

Steps:

Let "n" be the first even number. We are told that

n + (n+2) + (n+4) + (n+6) + (n +8) = 216

The third number, the value we want, is boldfaced above.

Simplify the above equation:

5n + ( 2 + 4 + 6 + 8 ) = 216 or

5n + 20 = 216 or

5n = 196

n = 196/5 is NOT an integer value. This problem, as stated, has no solution.

Regards, MrB

4 0

3 years ago

Pls help i don’t know how to do this

Ne4ueva [31]

Step-by-step explanation:

to do what ?

the calculation of the 2 solutions for the quadratic equation is already done here.

so, what else do you need ? an explanation ?

in general, a quadratic equation looks like

ax² + bx + c = 0

and the formula for the solutions is

x = (-b ± sqrt(b² - 4ac))/(2a)

remember, a linear equation (x¹) has one zero solution.

a quadratic equation (x²) has 2 zero solutions.

a cubic equation (x³) has 3 zero solutions.

and so forth.

the 2 solutions here are created by the "±" operation. one solution is using the "+". and the other the "-". that is all.

so, what happened here was simply putting the values of the given equation into the solution formula and doing the calculations.

and the final line is saying that the solutions are the set of the 2 numbers represented by the "±" expression.

to finish this up for better clarity :

the first solution is

x = (-17 + sqrt(217))/4 = -0.567270034...

the second solution is

x = (-17 - sqrt(217))/4 = -7.932729966...

is there anything still unclear ? please let me know.

6 0

2 years ago

HELP ASAP ! TEST! The scatterplot shows the energy in watts and the light output in lumens per watt of several lightbulbs. Which

Nina [5.8K]

Answer:

D) There is no apparent association between the energy and light output. the image looks the most similar to a scatterplot with no relationship. im not finished with the test yet but im just trying to help anyone who might need it! i'll update with my test results.

3 0

3 years ago

6.) What is the similarity ratio?<br> A. 10:20<br> B. 10:28<br> (C.)5:14<br> D. 1:2

lesya692 [45]

Answer:

A AND D

B AND C

Step-by-step explanation:

If you change A into lowest terms it equals D

and if you cjange B into lowest terms it would equals C

5 0

3 years ago

What is the answer a, b, c, or d

podryga [215]

Answer: Choice B

(-2, 5)

==================================================

Explanation:

The original system is

$\begin{cases}-4x+3y = 23\\ x-y = -7\end{cases}$

Multiply both sides of the second equation by 3. Doing so leads to this updated system of equations

$\begin{cases}-4x+3y = 23\\ 3x-3y = -21\end{cases}$

Now add straight down

The x terms add to -4x+3x = -1x = -x

The y terms add to 3y+(-3y) = 0y = 0

The terms on the right hand sides add to 23+(-21) = 2

We end up with the equation -x = 2 which solves to x = -2

Now use this to find y. You can pick any equation with x,y in it

----------------

-4x+3y = 23

-4(-2)+3y = 23

8+3y = 23

3y = 23-8

3y = 15

y = 15/3

y = 5

Or

x-y = -7

-2-y = -7

-y = -7+2

y = -5

y = 5

Either way, we get the same y value.

So that's why the solution is (x,y) = (-2, 5)

6 0

2 years ago