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Anika [276]
2 years ago
7

7y-12-3y+9=0 help please

Mathematics
2 answers:
spayn [35]2 years ago
5 0
Hope this helps u....!!!

nasty-shy [4]2 years ago
3 0

Simplify. Combine like terms

7y - 3y = 4y

-12 + 9 = -3

----------------------------------------------------------------------------------------------------------------

4y - 3 = 0

Isolate the y. Note the equal sign. What you do to one side, you do to the other side. Do the opposite of PEMDAS.

4y - 3 (+3) = 0 (+3)

4y = 3

4y/4 = 3/4

y = 3/4

-----------------------------------------------------------------------------------------------------------------

y = 3/4 is your answer

-----------------------------------------------------------------------------------------------------------------

hope this helps

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What is the best estimate for the quotient 5,397 divided by 62
marysya [2.9K]

Answer:

The best estimate is 90.

Step-by-step explanation:

Given : Quotient 5,397 divided by 62 .

To find : The best estimate of the given situation.

Solution : We solve this by approximating the term and then divide to get solution.

Approximation is rounding off the number

→ When the ones digit is greater than 5 (5, 6, 7, 8, or 9) then it round the number up.

→ When the ones digit is less than 5 ( 0, 1, 2, 3, or 4) then it round the number down.

Approximation of 5397 to hundredth is 5400

Approximation of 62 to tenth is 60

Now, divide 5400 by 60

\frac{5400}{60}= 90

Therefore, The best estimate is 90.

We can also cross check by actual division of 5397 by 62.

\frac{5397}{62}= 87.04

When we approximate 87.04 it round off to 90.

4 0
3 years ago
Read 2 more answers
6 x 10 5 is how many times the value of 3 x 10 (Hint: Write your answer in standard form.)​
JulijaS [17]

Answer:

0.000036

Explanation:

When multiplying a number by 10 to the power of a positive exponent (e.g.  

10

3

), move the decimal in the number that many spaces to the right (e.g.  

4.5

⋅

10

3

=

4500

).

When multiplying a number by 10 to the power of a negative exponent (e.g.  

10

−

4

), move the decimal in the number (the absolute value of) that many spaces to the left (e.g.  

4.5

⋅

10

−

4

=

0.00045

).

For  

3.6

⋅

10

−

5

, move the decimal five spaces to the left:

0.000036

Step-by-step explanation:

5 0
2 years ago
What is the approximate age of a woman whose normal systolic pressure measures 125 mm Hg?
sashaice [31]

The approximate age of a woman whose normal systolic pressure measures 125 mm Hg is 31

The function is given as:

P(A) = 0.006A^2 - 0.02A + 120

When the normal systolic pressure is 125, it means that:

P(A) = 125

So, we have:

125 = 0.006A^2 - 0.02A + 120

Subtract 125 from both sides of the equation

0= 0.006A^2 - 0.02A + 120 -125

0= 0.006A^2 - 0.02A - 5

Rewrite the equation as:

0.006A^2 - 0.02A - 5 = 0

Using a graphing calculator, we have:

A = \{30.58, -27.25\}

But age cannot be negative.

So, we have:

A = 30.58

Approximate

A =31

Hence, the age of the woman is 31

Read more about quadratic functions at:

brainly.com/question/11441586

8 0
2 years ago
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What is the slope of the line that goes through -3,7 & -17,3
Natalka [10]

Point 1: (-3, 7)

Point 2: (-17, 3)

To find the slope, we need to use the slope formula which is as follows: m = (y2 - y1) / (x2 - x1). We will plug in each x and y coordinate from our points above, respectively.

m = (3 - 7) / (-17 - - 3)

m = (-4) / (-14)

m = 2/7

The slope of the line that goes through (-3, 7) and (-17, 3) is 2/7.

Hope this helps!! :)

7 0
2 years ago
I NEED HELP ASAP PLS WILL MARK BRINLIEST!!!
d1i1m1o1n [39]

Step-by-step explanation:

wait, I will look my lecture last year

5 0
2 years ago
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