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malfutka [58]
3 years ago
7

Reminder: variables are on both sides

Mathematics
1 answer:
yarga [219]3 years ago
8 0
Start by multiplying both sides of the equation by 7 (the common denominator).

7 \left(\frac{6z}{7} -27 \right)=7\left(\frac{21-4z}{7} \right) \\ 6z-189=21-4z

Add 4z to both sides.

10z-189=21

Add 189.

10z=210 \\ z=21
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Which graphs represent functions?
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Answer:

Graphs B and D.

Step-by-step explanation:

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4 0
2 years ago
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Suman and Narayan riding bikes towards each other they are 480 Km apart. The speed of Narayan is 6km/hr faster than Suman. If bo
Masteriza [31]

Answer:

Suman 37 km/hr

Narayan 43 km/hr

(extremely sorry if this is wrong!!)

Step-by-step explanation:

We can use the formula distance divided by time is speed.

480/6 = 80.

Their speeds must add up to 80 km/hour

Lets set suman as a variable, lets say s.

Narayan has a speed 6 more than suman so we say 6+s

6+s+s = 80

subtract 6 from both sides

s+s = 74

add like terms

s+s = 2s

2s = 74

divide both sides by 2.

74/2=37

s=37

Suman's speed is 37 km/hr.

Narayan's speed would be 6 more than Suman's so we do 6+37

which makes 43 km/hr

4 0
3 years ago
Where is 14, 6 is on a coordinate plane.
ladessa [460]

Answer:

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Step-by-step explanation:

4 0
3 years ago
2. If a person is walking at a pace of 2/3 mile every 2/5 hour, how long would it take
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Alaina is selling wreaths and poinsettias for her chorus fundraiser. Wreaths cost $27 each poinsettias cost $20 each. If she sol
sleet_krkn [62]

Answer:

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Step-by-step explanation:

4 0
3 years ago
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