# Mira picked two numbers from a bowl. The difference of the two numbers was 4, and the sum of one-half of each number was 18. The system that represents Mira’s numbers is below. x – y = 4 x + y = 18 Which two numbers did Mira pick? (10, 8) (18, 4) (20, 16) (40, 32)

QUESTION POSTED AT 18/01/2020 - 07:05 AM

Let

x------> the first number

y-----> the second number

Assume

we know that

----> equation A

Multiply by both sides

-----> equation B

Adds equation A and equation B

Find the value of y

therefore

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Das test your knowlege of this exponential law

so

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QUESTION POSTED AT 20/02/2020 - 11:02 AM

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It would be: 7/8 * 40
= 7 * 5 = 35

Hope this helps!

ANSWERED AT 20/02/2020 - 10:31 AM

QUESTION POSTED AT 20/02/2020 - 10:31 AM

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Here, Out of all the options, Most appropriate expression for the linear value would be: Y = 5x
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x = a base.

Now, x = 7, then,
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Hope this helps!

ANSWERED AT 20/02/2020 - 10:21 AM

QUESTION POSTED AT 20/02/2020 - 10:21 AM

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ANSWERED AT 20/02/2020 - 10:02 AM

QUESTION POSTED AT 20/02/2020 - 10:02 AM

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The answer is the A :)
30*3 and you'll get the number of minutes Reggie walked

ANSWERED AT 20/02/2020 - 10:02 AM

QUESTION POSTED AT 20/02/2020 - 10:02 AM

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45.25%

Step-by-step explanation:

ANSWERED AT 20/02/2020 - 10:01 AM

QUESTION POSTED AT 20/02/2020 - 10:01 AM

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The standard equation for a hyperbola with a horizontal transverse axis is

(x-h)^2/a^2 - (y-k)^2/b^2  = 1
. The center is at (h, k) . The distance between the vertices is 2a . The distance between the foci is 2c and c^2 = a^2 + b^2. Therefore,

8^2 = 6^2 + b^2
b = 2
√7
Assuming it is located at the origin.

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ANSWERED AT 20/02/2020 - 09:54 AM

QUESTION POSTED AT 20/02/2020 - 09:54 AM

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ANSWERED AT 19/02/2020 - 06:08 PM

QUESTION POSTED AT 19/02/2020 - 06:08 PM

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1. 4+2 is 6
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ANSWERED AT 19/02/2020 - 06:02 PM

QUESTION POSTED AT 19/02/2020 - 06:02 PM

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24x-3+0.06x=4(6.7)
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ANSWERED AT 19/02/2020 - 06:01 PM

QUESTION POSTED AT 19/02/2020 - 06:01 PM

### Lilana takes 4 breaths per 10 seconds during yoga.At this rate about how many breaths would Lilana takes in 2 minuets of yoga?

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4 / 10 = x / 120.....4 breaths to 10 seconds = x breaths to 120 seconds
cross multiply
10x = 480
x = 480/10
x = 48 breaths <==

ANSWERED AT 19/02/2020 - 05:28 PM

QUESTION POSTED AT 19/02/2020 - 05:28 PM

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In this situation, the only 0 that could be found is the one that attached to 10.
For this, the 0 only represent the real value of the money,and basically nothing else.
It also represent the amount of money Katle has left, after borrowing \$12 and pay all of his debt.

ANSWERED AT 19/02/2020 - 02:39 PM

QUESTION POSTED AT 19/02/2020 - 02:39 PM

### The tip for excellent service in a restaurant is 20 for every 100 of the meal what is the total bill (cost of meal plus tip) for a 60 meal?

I would think the tip would be 15 wich would make the meal all together 85.

ANSWERED AT 19/02/2020 - 02:34 PM

QUESTION POSTED AT 19/02/2020 - 02:34 PM

### Hannah has 127 books in her collection. Her school is hosting a book donation. There are z students at her school, and they each plan to donate the same number of books and reach a total donation of 300 books! How many books will Hannah have in her collection after her donation? Write your answer as an expression.

b/50

Step-by-step explanation:                                                                          There were 150 students who donated a total of b books.

The students donated an average of b/150 books each.

Hannah donated 3 times as many books as the average.

b/150 * 3 = b/50

Hannah donated b/50 books.

ANSWERED AT 19/02/2020 - 02:30 PM

QUESTION POSTED AT 19/02/2020 - 02:30 PM

### Find the value of "a" for which the graph of the first equation is perpendicular to the graph of the second equation. 1) equation : y=a/3x-6 2) equation 4x+2y=6 Their is the same problems but different equation.1) 3y+ax=8 2)3/4x+2

Perpendicular lines will have negative reciprocal slopes. Example : if u r given a slope of 1/3, to find the negative reciprocal, flip the slope and change the sign. So the negative reciprocal of 1/3 is -3/1 or just -3. So slope 1/3 and slope -3 are perpendicular.
==================
equation 2 :
4x + 2y = 6
2y = -4x + 6
y = -2x + 3...the slope here is -2....a perpendicular line will have a slope of 1/2.

y = (a/3)x - 6......so we have to make a/3 = 1/2......1.5/3 = 1/2
so a = 1.5
===================
eq. 2 : 3/4x + 2
not sure what the entire equation is.....but it looks to have a slope of 3/4. That means a perpendicular line will have a slope of -4/3.

3y + ax = 9
3y = -ax + 9
y = (-a/3)x + 3.....therefore, a has to be 4

ANSWERED AT 19/02/2020 - 02:18 PM

QUESTION POSTED AT 19/02/2020 - 02:18 PM

### 33% of what number is 1.45?

It is 4.39 hope it helps

ANSWERED AT 19/02/2020 - 01:39 PM

QUESTION POSTED AT 19/02/2020 - 01:39 PM