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Misha Larkins [42]
3 years ago
6

Some one please help

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
6 0

Answer:

Its C

Step-by-step explanation:

Rational numbers contain decimals that do not repeat and whole numbers

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Solve using the substitution method<br> x-7y=19<br> 5x=-2y-16
Vikki [24]

x - 7y = 19          <em>multiply both sides by 5</em>

5x - 35y = 95

Substitute 5x = -2y - 16:

(-2y - 16) - 35y = 95

(-2y - 35y) - 16 = 95            <em>add 16 to both sides</em>

-37y = 111            <em>divide both sides by (-37)</em>

y = -3

Put the volue of y to the first equation:

x - 7(-3) = 19

x + 21 = 19            <em>subtract 21 from both sides</em>

x = -2

<h3>Answer: x = -2 and y = -3 → (-2, -3)</h3>
5 0
3 years ago
Read 2 more answers
Braden and Jason, who are florists, purchased flower bouquets and vases at the same store. Braden bought 3 flower bouquets and 5
Sergeeva-Olga [200]
The price of a flower bouquet is $2.75 according to the information on the question above. This problem can be solved using two linear equations with two different variables based on the transaction. The first equation is 3x +5y= 25.75 and the second equation is 8x+2y=29 which can be simplified as y=14.5-4x. You can find the x by substituting the "y" variable on the first with the second equation resulting in "x =2.75" which is the price of the flower bouquet<span>.</span>
3 0
3 years ago
Jim, Dan and David share some sweets in the ratio 3:2:1. Jim gets 27 sweets. How many sweets are there altogether?
Gemiola [76]

Answer:

54 sweets altogether

Step-by-step explanation:

Jim: 27

Dan:

David:

3:2:1

The amount is divided by 6

27/3=9

Dan— 9*2=18

David— 9*1=9

18+9+27=54

4 0
3 years ago
For shipping the retailer charges a $4.95 flat fee or 5.75% of the total purchase, whichever is greater. If Lucia's total purcha
Airida [17]
ANSWER: $4.95

EXPLANATION:

So it’s asking us to find out if $4.95 dollars is more than 5.75% of 78.99.

So we need to find 5,75% of 78.99

To find percentage turn the percent into a decimal.

5.75% become 0.575

Now we have 0.575 x 78.99

That is 45.41925

Move the decimal over again and you get 4.541925

Round to the nearest hundredth to get

$4.54

$4.54 < $4.95

So the answer is &4.95
5 0
2 years ago
Rewrite the following expression using the properties of rational exponents. Be sure your answer is in simplest form.
ivolga24 [154]

Answer:

12^(3/2)

Step-by-step explanation:

(2x6)^3/2

2x6=12

12^3/2= 41.5692193817

8 0
3 years ago
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