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Viktor [21]
2 years ago
8

Help me with all these​

Mathematics
2 answers:
frosja888 [35]2 years ago
8 0
Number 4 is C because when you do 28 times 5 your get 140 then you do 140 divided by 20 to get 7 when you do proportions to find the missing number you cross multiply with the numbers there and divide with the number that is across from the missing
Number 5 is $6 because to find the missing number you have to see which way makes sense you could do 4 divided by 3 but you get a really long number so if you do 3 divided by 4 you get .75 and you get .75 for all cost is usually the y-axis so you do y divided x so then do .75 times 8 to get the answer
Number 6 to plot them you just go in the middle of the line for the first because it is not directly 2
Number 7 to change a fraction to decimal do the numerator divided by denominator even if the denominator is bigger so 6 divided by 25 is .24 for decimal form to get the percent move the decimal point two places to the right so it will be 24%
Archy [21]2 years ago
4 0

Answer:

<em>1)</em> C. 7

<em>2a)</em><em> </em>$10.66

<em>2b)</em><em> </em>plot each price and amount at the correct spot

<em>3a)</em><em> </em>0.24

<em>3b)</em><em> </em>%24

Step-by-step explanation:

<em>1)</em> cross multiply the equation: 5*28 =140 and m*20=20m

tun the answers back into an equation: 20m=140

divide both sides by 20: <u><em>m=7</em></u>

<em>2a)</em><em> </em>divide 3 by 2.25: 3/2.25=$1.33(repeating)

divide 4 by 3: 4/3.00=$1.33(repeating)

divide 6 by 4.5=$1.33(repeating)

(because now you know that 1 box of Mac N' Cheese is $1.33) multiply 8 by 1.33(repeating):8*1.33(repeating)=<u><em>$10.66</em></u>

<em>3a)</em> divide 6 by 25: 6/25= <em><u>0.24</u></em>

<em>3b) </em>multiply 0.24 by 100: 0.24*100= <em><u>%24</u></em>

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Brooke has to set up 70 chairs in equal rows for the class talent show. But, there is not room for more then 20 rows. What are t
grin007 [14]

Answer:

The answer is 2, 5, 7, 10, and 14.


Step-by-step explanation:

Let x be the number of rows. There is not room for more than 20 rows:

x ≤ 20


Since all rows must be equal, when we divide 70 by x, we must get a whole number. So, we must find all divisors of 70 smaller or equal to 20 and they are: 2, 5, 7, 10, and 14.

So, the possibilities are:

2 rows with 35 chairs in each row

5 rows with 14 chairs in each row

7 rows with 10 chairs in each row

10 rows with 7 chairs in each row

14 rows with 5 chairs in each row

Hope this helps!!


~CoCo

7 0
3 years ago
Write the slope intercept form through: (5,1) and(2, -2)
victus00 [196]

We see that the slope of this line is \frac{-2-1}{2-5}=1, so we plug this and the point (5,1) into the point-slope form y-y_1=m(x-x_1) (note that there's nothing special about the point I picked; you can choose any point on the line):

y-1=x-5. This rearranges to the slope-intercept form \boxed{y=x-4}.

3 0
3 years ago
What is the result of increasing 50 by 30%?
kogti [31]

Answer:

50 increased by 30% is 65

Step-by-step explanation:

'Percent (%)' means 'out of one hundred':

p% = p 'out of one hundred',

p% is read p 'percent',

p% = p/100 = p ÷ 100.

30% = 30/100 = 30 ÷ 100 = 0.3.

100% = 100/100 = 100 ÷ 100 = 1.

Percentage increase = 30% × 50

New value = 50 + Percentage increase

Calculate

New value =

50 + Percentage increase =

50 + (30% × 50) =

50 + 30% × 50 =

(1 + 30%) × 50 =

(100% + 30%) × 50 =

130% × 50 =

130 ÷ 100 × 50 =

130 × 50 ÷ 100 =

6,500 ÷ 100 =

65

Or just find 30% of 50 (15) and add that

8 0
2 years ago
7. algebra sara allen is interested in buying a notebook
seropon [69]

A percentage is a way to describe a part of a whole. The regular selling price of the computer notebook will be $937.5.

<h3>What are Percentages?</h3>

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Let the selling price of the computer notebook be represented by x.

Now, if Sara buys the computer this week, the selling price of the computer will be (100%-16%)x = 0.84x.

Also, the saving she made by buying this week will be $150, therefore, we can write,

x-0.84x = $150

0.16x = $150

x = 937.5

Hence, the regular selling price of the computer notebook will be $937.5.

Learn more about Percentages:

brainly.com/question/6972121

#SPJ1

4 0
2 years ago
Hey does anybody live in pickens on here
slega [8]

Answer:, yes i do

Step-by-step explanation:

6 0
3 years ago
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