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2 years ago

Find the value of x? thanks

Mathematics

2 answers:

denis-greek [22]2 years ago

8 0

Answer:

Step-by-step explanation:

Solution

3x - 3 2x - 2

===== = ====== Cross Multiply

5 4

4(3x - 3) = 5(2x - 2) Remove the brackets. Distributive Property

12x - 12 = 10x - 10 Subtract 10 x from both sides

12x-10x - 12 = 10x-10x - 10 Combine

2x - 12 = - 10 Add 12 to both sides

2x-12+12 = -10 + 12 Combine

2x = 2 Divide by 2

2x/2 = 2/2

Answer

x = 1

lyudmila [28]2 years ago

5 0

Answer:

x=1

Step-by-step explanation:

20(3x-3/5) = 20(2x-2/4)

12x-12= 10x-10

12x-10x =12-10

x= 1

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2+4+3i+8i
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3 years ago

In the United States, there were approximately 1,664 ride-related injuries in fixed-site amusement parks in 2007, compared to 1,

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3 years ago

Read 2 more answers

A car is traveling at a speed of 20 meters per second. What is the cars speed in kilometers per hour

IRISSAK [1]

Answer:

72 km/h

Step-by-step explanation:

We need to convert units

so:

20 m ----- 1 km -------- 3600 s

1 s ----- 1000 m ----1 h

and solve ot

20 x 1 x 3600 s = 72000 we multiply numerators

1s x 1000 m x 1 h = 1000 we multiply denominators

we divide de results 72000/1000 = 72

4 0

3 years ago

Can anyone help me with these questions plz

KonstantinChe [14]

Answers:

7: 20 miles

8: 28 miles

9: 1 error

10: Their speed is 50

11: 365 words in 5 mins

Step-by-step explanation:

#7 and #8

Our equation is: $f=2.25+0.20(m-1)$ With f meaning "fare" (price) and m meaning "miles".

Question 7 - Juan's fare for his ride costs $6.05. We must solve for $m$ .

Step 1. Substitute - Substitute the fare for $f$ in the equation.

$6.05=2.25+0.20(m-1)$

Step 2. Simplify/Solve - Solve for $m$ .

$6.05=2.25+0.20(m-1)$

- Distribute

$6.05=2.25+0.2m-0.2$

- Subtract 0.2 from 2.25

$6.05=2.05+0.2m$

- Subtract -2.05 from 6.05

$4=0.2m$

- Divide both sides by 0.2

$20=m$

And you have your answer of 20 miles.

Question 8 - Same equation, different fare.

Step 1. Substitute

$7.65=2.25+0.20(m-1)$

Step 2. Solve

$7.65=2.25+0.20(m-1)\\7.65=2.25+0.20m-0.20\\7.65=2.05+0.20m\\5.6=0.20m\\28=m$

And like so, we have $m = 28$

Questions 9 - 11

The equation given is $S=\frac{1}{5} (w-10e)$ . S = typing speed, w = words per 5 mins, and e= errors.

Question 9 -

We are given this information: S = 55, W = 285. We are solving for e.

Substitute -

$55=\frac{1}{5} (285 -10e)$

Solve -

$55=\frac{1}{5} (285 -10e)\\55=\frac{1}{5} (285 -10e)\\55= 57-2e\\-2=-2e\\1=e$

So they would make 1 error.

Question 10 -

Information given: 300 = w, 5=e. We are solving for S

Substitute -

$S= \frac{1}{5} (300-10(5))$

Solve -

$S= \frac{1}{5} (300-10(5))\\S= \frac{1}{5} (300-50)\\S= \frac{1}{5} (300-50)\\S= \frac{1}{5} (250)\\S= 50$

Their speed is 50.

Question 11 -

Information given: S = 65, e = 4. We are solving for w.

Substitute -

$65=\frac{1}{5} (w-10(4))$

Solve -

$65=\frac{1}{5} (w-10(4))\\65=\frac{1}{5} (w-40)\\65=\frac{1}{5}w-8\\73=\frac{1}{5}w\\365=w$

So w = 365.

Hoped this helped!~

7 0

3 years ago

Given that a task would take 40 people a total of 4 days to complete it, how many days would it take 10 people to complete the s

velikii [3]

100 days because 40 divide by 4 = 10 10 x 10 =100

7 0

3 years ago

Find the value of x? thanks ​

Find the value of x? thanks