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alexgriva [62]
2 years ago
6

Q6 (i) please i don’t know what i’m doing wrong

Mathematics
2 answers:
UkoKoshka [18]2 years ago
6 0

Answer:

x = 4

Step-by-step explanation:

Square both sides

x+5 = 25-10sqrt(x)+x

20 = 10sqrt(x)

sqrt(x) = 2

Square both sides again

x=4

Verify sol

x = 4

Dennis_Churaev [7]2 years ago
5 0
Start by squaring the numbers on both sides to get rid of the square root on both the left and right sides to get:

x + 5 = 5^2 – x

x + 5 = 25 – x

Then rearrange to make x the subject.

x + 5 = 25 – x

2x + 5 = 25

2x = 20

x = 10
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A)<br><br> B)<br><br> C)<br><br> D) None of the lines fit the data
Semmy [17]

Answer:

B

Step-by-step explanation:

Line B best fits the data because some of the points fall on line B.

Hope this helps!

7 0
2 years ago
Sam's total expenses last month were $1840. What was his total variable cost for last
likoan [24]

Answer:

$1500

Step-by-step explanation:

It is given that

Rent  = $100

Groceries and drinks = $1000

Insurance premiums   = $10

Loan interest payment  =$30

Clothes  = $200

Utilities  = $300

Home security fee  = $200​

Fixed cost are costs that does not vary and variable cost are costs that vary with goods and services.

In the given problem, rent , insurance premiums, loans interest payment ad home security fee are fixed cost.

Groceries and drinks, clothes and utilities are variable cost.

So, total variable cost for last month is

\text{Total variable cost}=\$1000+\$200+\$300=\$1500

Therefore, total variable cost for last month is $1500.

5 0
3 years ago
Need help in algebra fast
4vir4ik [10]

Answer:

D

Step-by-step explanation:

When adding to y (the function) the the function translates up

When multiplying x, the fuction dialates by a factor of what you are multiplying under 1, so multiplying x by 3 is the dilation by a factor of 1/3

7 0
3 years ago
Melinda has shown that a function, f(x), increases by 4 for every unit in the domain. What does this prove?
Virty [35]

Answer:

Option 1 is correct that is the function f(x) is an arithmetic sequence.

Step-by-step explanation:

We have been given the information that function is increasing by 4 for every unit in the domain.

That means difference between the consecutive terms will be same that is common difference exists

For example:

we have a function f(x)=x

Since, it is increasing by 4 for every unit means function becomes x,x+4,x+4+4

The common difference is 4.

Hence, the function f(x) is an arithmetic sequence.

therefore, option 1 is correct.

8 0
3 years ago
Read 2 more answers
1. Write down a pair of integers<br>(a) sum is -7 <br>​
rewona [7]

Answer:

-10, 3

Step-by-step explanation:

-10, 3 work since

-10 + 3 = -7

4 0
3 years ago
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