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Zinaida [17]
3 years ago
13

Pls help I will award brainiest

Mathematics
1 answer:
diamong [38]3 years ago
3 0

Answer:

189

Step-by-step explanation:

ratio is 8:9

multiply ratio by 21 to get 168:189

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Show your work to find x​
Karolina [17]

Use the Pythagorean Theorem Formula

a^2+b^2=c^2

a=12

b=9

12^2+9^2=c^2

144+81=c^2

225=c^2

Square root 225 and c^2

c=15

Answer: c=15

3 0
3 years ago
Read 2 more answers
What is the perimeter of a triangle with side lengths of 5 cm, 8 cm, and 9 cm?
IrinaVladis [17]
The answer is 22 cm, you just add up all the sides when doing perimeter
7 0
2 years ago
Plz help ill give u brainlist
sineoko [7]
The answer is 18.5, I believe



good luck
5 0
3 years ago
Read 2 more answers
Help me substitution method define variables
Rina8888 [55]
\left \{ {{S=14+L} (I) \atop {S+L=124}(II)} \right.

<span>Substitute (I) into (II), we have:
</span>S+L=124
(14+L)+L=124
14 + 2L = 124
2L = 124 - 14
2L = 110
L =  \frac{110}{2}
\boxed{L = 55}

<span>Replace (II) in (I), we have:
</span>S=14+L
S = 14+ 55
\boxed{S = 69}

Answer:
each student sell: 
Lori = 55 pizzas
Steve = 69 pizzas
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7 0
3 years ago
Anyone down to help? 12pts for PRE-ALGEBRA question Use the information in the table for 2–4.
Anni [7]

Answer:

See attached image

Step-by-step explanation:

If the number of blueberries is the x value, and number of calories is the y value, then we can create the ordered pairs (5,4) (10,8) (15,12) based on the data in the table.

Plotting these on the graph is simple - just go to the x value then the y value and plot where these lines meet.

The slope of a line is always the rise over run.

Every time our x increases by 5, our y increases by 4. The rise is 4, and run is 5, so the slope is \frac{4}{5}

Hope this helped!

8 0
3 years ago
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