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Colt1911 [192]
3 years ago
12

Expand and simplify 2(5x+4)+ 3(2x-1)

Mathematics
1 answer:
tester [92]3 years ago
3 0
10x+8+6x-3
answer
16x+5
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mary and scott collect coins. mary has four times the number of coins that scott has. together they have 240 coins. how many coi
Gala2k [10]

Your equation would be 4x=240

Devide both sides of the equation by four

x=60

7 0
3 years ago
For each relation, decide whether or not it is a function.
Elodia [21]

Relation 1: No, the inputs of desk and leaf each correspond to two different outputs.

Relation 2: No, the input of 7 corresponds to three different outputs.

Relation 3: Yes, each input corresponds to only one output.

Relation 4: No, the input of -7 corresponds to two different outputs: a and h.

3 0
1 year ago
Sandra bought 30 T-shirts at the clothing store. 20% of the T-shirts were blue and half of the T-shirts were black. How many of
insens350 [35]
So you have 20% of blue and 50% of black.
So you have 70% in total that are both blue and black.
100%- 70%= 30%
So that means 30% were neither blue or black.
Do a proportion
30/100= x/30
30 x 30= 900
900 divided by 100= 9
Answer is 9 shirts are neither blue or black
8 0
4 years ago
Help. How do u convert units within a measurement system
Triss [41]
Step 1. Identify the unit you have 
Step 2. Identify the unit you want to covert to
Step 3. Count the number of units between them 

(<span>If </span>you<span> are going from a larger </span>unit<span> to a smaller </span>unit<span>, </span>you<span> multiply by 10 successively.)</span>
4 0
3 years ago
Find a​ point-slope form for the line with slope 1/5 and passing through the point ​(​-6,-9​).
Elenna [48]

Answer:

y=1/5x-39/5

Step-by-step explanation:

y=mx+b (slope y intercept formula)

y=1/5x+b

take (-6,-9) and put in appropiate places

-9= -6/5+b

*multiply lhs and rhs by 5

-45= -6+5b

-45+6=5b

-39=5b

-5b=39

b=39/-5

y=1/5x-39/5

5 0
3 years ago
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