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vampirchik [111]
3 years ago
11

Explain how you know...?

Mathematics
1 answer:
Anestetic [448]3 years ago
8 0

Answer:

60

Step-by-step explanation:

Because 7.7^2 equals 60,

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What value of x is in the solution set of 3(x – 4) ≥ 5x + 2? <br><br> –10<br> –5<br> 5<br> 10
emmasim [6.3K]

<u>Answer:</u>

The value of x is in the solution set of 3(x – 4) ≥ 5x + 2 is -10

<u>Solution:</u>

Need to determine which value of x from given option is solution set of 3(x – 4) ≥ 5x + 2

Lets first solve 3(x – 4) ≥ 5x + 2

3(x – 4) ≥ 5x + 2

=> 3x – 12 ≥ 5x + 2

=> 3x – 5x ≥ 12 + 2

=> -2x ≥ 14

=> -x ≥ 7

=> x ≤ -7

All the values of x which are less than or equal to -7 is solution set of 3(x – 4) ≥ 5x + 2. From given option there is only one value that is -10 which is less than -7  

Hence from given option -10 is solution set of 3(x – 4) ≥ 5x + 2.

7 0
4 years ago
Read 2 more answers
One positive number is 8 more than twice another. If their product is 234 find the numbers
Setler [38]

Answer:

Step-by-step explanation:

Let the larger number = x

Let the smaller number = y

x = 2*y + 8

x * y = 234              Put the first  equation into the second.

(2y + 8)*y = 234      Remove the brackets

2y^2 + 8y = 234     Subtract 234 from both sides

2y^2 +  8y - 234 =0 Factor out 2

2(y^2 + 4y - 117) = 0 Divide by 2

y^2 + 4y - 117 = 0

(y + 13)(y - 9)

y = 9 is one answer

x * y = 234

x * 9 = 234         Divide by 9

x = 234/9

x = 26

The two numbers are 9 and 26

3 0
2 years ago
Write the equation of a line in slope intercept form of a line that has a slope of 1/2 and contains (-4,1)
Delicious77 [7]
The general form of the line is:
y = mx + c where:
m is the slope 
c is the y-intercept

Now, we are given that the slope = 1/2.
The equation now became:
y = (1/2) x + c

Now, we need to get the y-intercept. We are given that (-4 ,1) belongs to the line. Therefore, this point satisfies the equation of the line. Based on this, we will substitute with this point in the equation above and solve for c as follows:
y = (1/2) x + c
1 = (1/2)(-4) + c
1 = -2 + c
c = 1+2
c = 3

Based on the above, the equation of the line is:
y = (1/2) x + 3
6 0
3 years ago
Find the surface area of the pyramid. The side lengths of the base are equal.
alexdok [17]

Answer:

362.02

Step-by-step explanation:

8 0
3 years ago
2.Dawood can proofread 50 pages in 40 minutes. How many pages can he proofread in 2 hours? 4 marks
Elden [556K]

Answer:

Q1:

150 pages is the answer

2 hours= 60+60minutes

So 120/40 =3

Answer= 50×3= 150.

Q2:

Using Work=men×days we get

Work=20×20

Work=400

Now, work is same and number of days are to be calculated

400=25×days

days= 16

400 = 25 x 16

so it will take 16 days

Step-by-step explanation:

Hope this helps!

8 0
3 years ago
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