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Nonamiya [84]
2 years ago
9

Calculate: 20+ 3 (5 – 1)

Mathematics
2 answers:
Natasha2012 [34]2 years ago
8 0

Answer:

23,4

Step-by-step explanation:

yanalaym [24]2 years ago
5 0

Answer:

32

Step-by-step explanation:

20 + 3(5 - 1)

20 + 15 - 3

35 - 3

32

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Help me please with this geometry
Tasya [4]
All Triangles are equilateral ( each side = 4)


Area of a Triangle is (B x H)/2. B being the base ( 4) & H the altitude.

WE know that altitude in an equilateral triangle, H = ( side x√3)/2

So H= (4√3)/2 = 2√3

The area of one triangle = (4 x 2√3)/2 = 4√3

And for the 3 triangles the lateral area = (4√3) x 3 = 12√3
6 0
2 years ago
Is {(2, –2), (1, 5), (–2, 2), (1, –3), (8, –1)} a function
NISA [10]

Answer:

No

Step-by-step explanation:

The set contains 2 different ranges for 1 domain. In this case, X = 1 returns 5 and -3, meaning it cannot be a function.

4 0
2 years ago
Match each line to its slope
ira [324]

Answer:

A is 1/2

B is 2

C is -2

Step-by-step explanation:

hope this helps :3

if it did pls mark brainliest

5 0
3 years ago
I will give brainilest
S_A_V [24]
Answer 19:1

Work:
Students scoring above 80 -
9+18+72+15= 114

Students score exactly 80-
6

114/6 = 19

19 students scored above 80 for every 1 student that scored exactly 80.
3 0
2 years ago
if there are two containers of sugar solution, the first is 4% concentration and second is 8% concentration. how much of each sh
Elina [12.6K]

Answer:

<u>30 gallons solution 4% and 10 gallons solution 8%</u>

Step-by-step explanation:

<h3>x•4%+y•8%=40•5% </h3>

<em><u>4x+8y=40•5 and x+y=40</u></em>

x=40-y

4(40-y)+8y=200

160-4y+8y=200

4y=200-160

4y=40 => y=10 (gallons solution 8%)

=> x=40-10=30 (gallons solution 4%)

30 gallons solution 4% and 10 gallons solution 8%

5 0
2 years ago
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