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Korolek [52]
2 years ago
5

Solve #14 for x and y plsss I WILL GIVE BRAINLY

Mathematics
1 answer:
frez [133]2 years ago
6 0

7x - 44 = 4x + 4

Add both sides 44

7x - 44 + 44 = 4x + 4 + 44

7x = 4x + 48

Subtract both sides 4x

7x - 4x = 4x - 4x + 48

3x = 48

Divide both sides by 3

3x ÷ 3 = 48 ÷ 3

<h2>x = 16 </h2>

______________________________

Suppose that the angle between 39 and 4x + 4 is t degrees as you know they make a straight line together thus :

39 + t + 4x + 4 = 180

39 + t + 4(16) + 4 = 180

39 + t + 64 + 4 = 180

39 + t + 68 = 180

t + 107 = 180

Subtract both sides 107

t + 107 - 107 = 180 - 107

<h2>t = 73 </h2>

_____________________________

8y - 43 = 4x + 4 + t

8y - 43 = 4(16) + 4 + 73

8y - 43 = 64 + 4 + 73

8y - 43 = 68 + 73

8y - 43 = 141

Add both sides 43

8y - 43 + 43 = 141 + 43

8y = 184

Divide both sides by 8

8y ÷ 8 = 184 ÷ 8

<h2>y = 23 </h2>

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A scientist was in a submarine below sea level, studying ocean life. Over the next ten minutes, she ascended 63.9 feet. How many
kati45 [8]

Answer:

-85.9 feet below sea level.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
= 4. The sum of Ben's and David's ages is 62 yrs now. Five years from now David will be twice as old as Ben. How old is Ben now?
ki77a [65]

The age of ben and david is 24 and 38 years.

According to the statement

we have to find the age of the Ben now.

So,For this purpose, we know that the

One application of linear equations is what are termed age word problems. When solving age problems, generally the age of two different people (or objects) both now and in the future (or past) are compared.

From the given information:

The sum of Ben's and David's ages is 62 yrs now

And

Five years from now David will be twice as old as Ben.

Let the ben age is x

and the david age is y.

So, from given information:

x+y = 62  -(1)

5 years from now,

y = 2x  -(2)

put (2) in the (1) then

x+y = 62 -5

x+2x = 57

3x = 57

x = 19.

And the age of davud become

y = 2(19)

y = 38 years

So, five years from now the age of ben is 19 and david is 38 years.

And now the age of the ben and age of david is

Age of ben now = 19+5

Age of ben now = 24.

Age of david now  = 62 -24

Age of david = 38.

So, The age of ben and david is 24 and 38 years.

Learn more about age word problems here

brainly.com/question/13818690

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5 0
1 year ago
What is $6.25 marked up 25%
Marta_Voda [28]

Answer:

$6.25 marked up 25% is $7.81

Step-by-step explanation:

First, you have to find what 25% is of 6.25.

Step 1: Our output value is 25.

Step 2: We represent the unknown value with x.

Step 3: From step 1 above, 25=100%.

Step 4: Similarly, x=6.25%.

Step 5: This results in a pair of simple equations:

25=100%(1)

x=6.25%(2)

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

<u>25 </u> =   <u>100</u>

 x       6.25

Step 7: Again, the reciprocal of both sides gives

<u> x </u> =  <u>6.25</u>

25     100

x= 1.5625

x≈ 1.56

Once you've known what 25% is, you add it to 6.25.

1.56+6.25= 7.81

7 0
3 years ago
Please help me solve this.<br>​
erastovalidia [21]

Answer:

B. Subtract 7

Step-by-step explanation:

You always want to isolate the <em>x</em> term to solve for <em>x</em> in any equation. Therefore, we need to move the 7 to the other side. Only way to do that is to subtract 7 on both sides.

8 0
3 years ago
2+3w&lt;-1&lt;3w+5<br><br><br><br><br><br>Answer please
Dafna1 [17]

2 + 3w < -1 < 3w + 5       |subtract 3w from all sides

2 < -1 - 3w < 5       |add 1 to all sides

3 < -3w < 6        |change the signs

-3 > 3w > -6      |divide both sides by 3

-1 > w > -2 → -2 < w < -1 → w ∈ (-2, -1)

7 0
3 years ago
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