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mash [69]
3 years ago
11

Is (5,1) a solution to the equation 2x-y=11? Explain

Mathematics
2 answers:
grigory [225]3 years ago
7 0
This is simple. Coordinate form is (x,y) so you would just plug in your values. 

2(5)-(1)=11

10-1 does not equal 11, so no it is not a solution.
nika2105 [10]3 years ago
6 0
Substitute the x for 5 and the y for 1.

(2)(5) - (1) = 11
10 - 1 = 9
9 does not equal 11
So, (5,1) is not a solution.
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1/2 percent, round to three positions
Tamiku [17]
I think the answer would be 0.005
8 0
3 years ago
When Ada was 15years and her sister ngozi was 18years. If Ada was born in 1970. In what year was ngozi born
Law Incorporation [45]

Answer: 1967

Step-by-step explanation:

Ada was 15 years when her sister Ngozi was 18 years.

This means that Ngozi is older than Ada by:

= 18 - 15

= 3 years

If Ngozi is older by 3 years, this means that she must have been born 3 years earlier than Ada

If Ada was born in 1970, Ngozi was born:

= 1970 - 3

= 1967

6 0
3 years ago
HELP!!!! geometry/trig pls help me thank u
patriot [66]

Answer:

the slide it's self is 10 feet long

Step-by-step explanation:

it says the height is 8ft off the ground which means that the slide being at a 45 degree angle it has to be at least 2 ft taller than the ladder

7 0
3 years ago
Algebra help?<br><br> 343 = (x/6) ^2/3
Vladimir79 [104]

I can only assume that you meant, "Solve for x:"

Apply the exponent 3/2 to both sides of this equation.  The result will be

     3/2

343 = x/6.    

Multiplying both sides by 6 isolates x:

          3/2

6*343           = x                         Since 7^3 = 343,  the expression for x

                                                  can be rewritten as

           3/2

6*(7^3)          =   x                      which can be further simplified, as follows:


x =  6^(3/2)*7^(9/2), or:

x = 6^(3/2)*7^(8/2)*√7, or

x = 6^(3/2)*7^4*√7

3 0
3 years ago
Z varies jointly as x and y. z=60 when x=5 and y=6. find z when x = 7 and y=3
Aneli [31]

Answer:

z = 42

Step-by-step explanation:

The question can be answered in 2 steps as follows:

Step 1: Calculation of the constant of the variation

The equation for the joint variation can be given as follows:

z = cxy ................... (1)

Where;

z = 60

c = constant = ?

x = 5

y = 6

Substituting the values into equation (1) and solve c, we have:

60 = c * 5 * 6

60 = c * 30

c = 60 / 30

c = 2

Step 2: find z when x = 7 and y = 3

Since from Step 1 c = 2, we now use equation (1) and substitute the values into it to find z as follows:

z = 2 * 7 * 3

z = 42

4 0
3 years ago
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