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3 years ago

15

Question 8,9 answer them fast plz

1 answer:

IRINA_888 [86]3 years ago

6 0

Hi there,

You will find the answers below.

Hope this helps !

Photon

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A mixture of 30 pounds of candy sells for $1.10 a pound. The mixture consists of chocolates worth $1.50 a pound and chocolates w

astra-53 [7]

$x-chocolate\ worth\ 1,50\$ \ per\ pound\\
y-chocolate\ worth\ 0,9\$\ per\ pound\\
\\\\
 \left \{ {{x+y=30} \atop {30*1,10=x*1,50+y*0,9}} \right.\\\\ \left \{ {{x=30-y} \atop {33=1,5x+0,9y}} \right. \\\\ Using \ substitution\ method:\\\\33=1,5(30-y)+0,9y\\\\
33=45-1,5y+0,9y\\\\ -12=-0,6y\ |:-0,6\\\\
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3 years ago

A painter earns $15 per hour. What is the minimum number of hours he must work to earn at least $200? write an inequality to rep

Amanda [17]

14 hours.......200 divided by 15 is 13.3333333 so your answer is 14

hope i could help sorry if i get it wrong

3 0

3 years ago

An art teacher has a jar containing b buttons to distribute to her class for a project. In order to give each in the class 6 but

Nastasia [14]

Answer:

22

Step-by-step explanation:

Given:

An art teacher has the total number of buttons = $b$

1. In order to give each in the class 6 buttons, she will need 18 more buttons.

2. If she gives each child 5 buttons, she will have 4 left over.

Question asked:

How many children are in the class ?

Solution:

<u>Let total number of children in the class = </u> $x$

<u><em>As given that, 18 more buttons will be needed to give 6 buttons to each.</em></u>

The equation will be:-

$b+18=6x\\b-6x=-18\ (equation\ 1)$

<em><u>Also given that, If she gives 5 buttons to each, she will have 4 left over.</u></em>

The equation will be:-

$b-5x=4\ (equation\ 2)$

Subtraction equation 2 from 1

$b-6x-(b-5x)=-18-4\\b-6x-b+5x=-22\\-6x+5x=-22\\-x=-22\\Minus\ canceled\ by\ minus\\x=22$

Hence, total number of children are 22.

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3 years ago

According to the school survey, 12% of the students at wok wood junior high school speak Spanish. There are 36 students at the s

aivan3 [116]

The correct answer should be 300

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2 years ago

Brandon earns a rebate each month on his meals and movie tickets. He earns $0.50 for each movie ticket and $2 for each meal. Las

Alex787 [66]

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B. 25 = (.5 * 22) + (2 * x)
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3 years ago