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Neko [114]
3 years ago
11

Solve for x. Thank you! ;)​

Mathematics
1 answer:
stepan [7]3 years ago
3 0

Answer:

X=35

You have to simply the equation using cross multiplication, divide by both sidesof the equatiom by 2 and move the constant to the right and change its sign. Then add the numbers. I hope this helped :)

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Which expression can be modeled using the number line?
saul85 [17]

Answer:

7 x 1/10 = 7/10

Step-by-step explanation:

There are 7 "bumps" on the number line, and each "bump" moves the line 1/10.

This can also be modeled as

1/10 + 1/10 + 1/10 +1/10 +1/10 +1/10 +1/10 = 7/10

4 0
3 years ago
The cost of 250 ft of cable is 2950 what would 40 ft cost
kotegsom [21]

Use ratio and proportion:  


$29.50 is to 250 ft. as how much is to 40 ft.  

29.5 / 250 = x / 40  

x = 40(29.5) / 250  

x = 1180 / 250  

x = 4.72  

40 ft. would cost $4.72

6 0
4 years ago
Read 2 more answers
$750,000 is what percent of $3,000,000?<br> Please help
velikii [3]

Answer:

25

Step-by-step explanation:

Solution for 750000 is what percent of 3000000:

750000:3000000*100 =

(750000*100):3000000 =

75000000:3000000 = 25

Now we have: 750000 is what percent of 3000000 = 25

Question: 750000 is what percent of 3000000?

Percentage solution with steps:

Step 1: We make the assumption that 3000000 is 100% since it is our output value.

Step 2: We next represent the value we seek with $x$x​.

Step 3: From step 1, it follows that $100\%=3000000$100%=3000000​.

Step 4: In the same vein, $x\%=750000$x%=750000​.

Step 5: This gives us a pair of simple equations:

$100\%=3000000(1)$100%=3000000(1)​.

$x\%=750000(2)$x%=750000(2)​.

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

$\frac{100\%}{x\%}=\frac{3000000}{750000}$

100%

x%​=

3000000

750000​​

Step 7: Taking the inverse (or reciprocal) of both sides yields

$\frac{x\%}{100\%}=\frac{750000}{3000000}$

x%

100%​=

750000

3000000​​

$\Rightarrow x=25\%$⇒x=25%​

3 0
3 years ago
A test taker gets 70 on 1st exam, 80 on 2nd exam, 2/3 of 4/5 of his 2nd exam on his 3rd test. If the professor gives 5 points ex
Serga [27]
<h3>Answer:  127</h3>

=================================================

Explanation:

The phrasing "2/3 of 4/5 of his 2nd exam on his 3rd test" is a bit clunky in my opinion. It seems more complicated than it has to be.

The student got 80 on the second exam. 4/5 of this is (4/5)*80 = 0.8*80 = 64. Then we take 2/3 of this to get (2/3)*64 = 42.667 approximately. If we assume only whole number scores are given, then this would round to 43.

Let x be the score on the fourth exam. Since 5 points of extra credit are given, the student actually got x+5 points on this exam.

So we have these scores

  • first exam = 70
  • second exam = 80
  • third exam = 43
  • fourth exam = x+5

Adding up these scores and dividing by 4 will get us the average

(sum of scores)/(number of scores) = average

(70+80+43+x+5)/4 = 80

(x+198)/4 = 80

x+198 = 4*80

x+198 = 320

x = 320 - 198

x = 122

So the student got a score of x+5 = 122+5 = 127 on the fourth exam.

7 0
3 years ago
A spinner is divided into 10 equal parts and numbered from 1 through 10. What is the probability of spinning a number less than
r-ruslan [8.4K]
You can count from 6-10 and you would get c) 5/10
5 0
3 years ago
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