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DiKsa [7]
4 years ago
15

Which ordered pair is a solution of the equation? y=8x+3 1/11 or -1/-5 or both

Mathematics
2 answers:
stepladder [879]4 years ago
4 0

Answer:

(1,11) and (-1,-5) are both solutions

Step-by-step explanation:

To determine if it is a solution, we substitute x into the equation and see if it gives us y

y = 8x+3

Let x =1

y = 8(1) +3

y = 8+3

y= 11

(1,11) is a solution

Let x = -1

y = 8(-1) +3

y = -8+3

y = -5

(-1,-5) is a solution

suter [353]4 years ago
3 0
<h3>✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽</h3>

➷ Substitute the values in:

1st option:

y = 8(1) + 3

y = 11

2nd option:

y = 8(-1) + 3

y = -5

The correct answer would be both.

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

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The equation d=0.05v2+1.1v models the distance, d, that it takes are car traveling v miles per hour to come to a complete stop.
liq [111]

Answer:

  • <u>Hannah was not speeding because her speed was about 61 mph, which is below the speed limit.</u>

Explanation:

Just to correct some typos, this is the complete question:

<em />

<em>The equation d=0.05v² +  1.1v models the distance, d, that it takes a car traveling at a speed of v miles per hour to come to a complete stop. If Hannah’s car stopped after travelling 250 feet on a highway with a speed limit of 65 mph, was Hannah speeding? Explain using math whether she was speeding and how you know.</em>

<em />

<h2>Solution</h2>

<em />

To find whether Hannah was speeding, you must find the velocity that is solution for the equation:

  • 250=0.05v² +  1.1v

<em />

Write it in standard form:

  • 0.05v² +  1.1v - 250 = 0

Use the quadratic formula:

       v=\dfrac{-1.1\pm\sqrt{(1.1)^2-4(0.05)(-250)}}{2(0.05)}

      v=\dfrac{-1.1\pm 7.1561}{0.1}

       v=60.6\text{ or }v=-82.6

The speed can only be positive; thus, it is about 61 miles per hour, which is below the speed limit of 65mph.

In conclusion, she was not speeding.

5 0
3 years ago
The formula for the area A of a trapezoid is A=1/2(b1+b2)h, where b1 and b2 represents the lengths of the bases and h represents
Vsevolod [243]
The answer:  [B]:  h = 2A / (b1 + b2) .
__________________________________________________________
Explanation:

Given:  A = (½) * (b1 + b2) * h ; 
________________________________
→Multiply EACH side of the equation by "2", to get rid of the fraction, "<span>½";
</span>____________________________________________________________
  → 2*A = 2 *  (½) * (b1 + b2) * h ; 

  → 2* A = 1 * (b1 + b2) * h ;
 
  → 2A =  (b1 + b2) * h ; 
____________________________
→ Now, divide EACH side of the equation by: "(b1 + b2)" ; to isolate "h" on one side of the equation; 
__________________________________________________________
  →   2A  / (b1 + b2) =  [(b1 + b2) * h] / (b1 + b2) ;

  →   2A  / (b1 + b2) =  h ; ↔ h = 2A / (b1 + b2) ; which corresponds to:
                                            "Answer choice: [B]" .
_____________________________________________________________
8 0
4 years ago
SOMEBODY PLEASE GIVE ME THE ANSWERS AND EXPLANATIONS FOR QUESTIONS NUMBER 5, 6, AND 7! I CAN'T GET BAD GRADES! ;(
MrRa [10]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Solve for x : x over 4 + 10 = 16
Alekssandra [29.7K]
Hi! X = 2
Because 4 + 10 = 14. 16-14 = 2
x =2
Does this make sense?
Please rate well, give thanks, mark as brainliest, and u can friend me if you want!
8 0
4 years ago
Two possible floor plans for a new bathroom are shown.
Neko [114]

Answer:

Hope it works for u

Step-by-step explanation:

As we have given two shapes bathroom

square and rectangle

Parameter of square= sum of all the sides   ( : In square all sides are equal

Parameter of square= 4*L  = 4*(x+3)       (:L=x+3

similarly,

In rectangle opposites sides  are equal hence

Perimeter of rectangle= 2*length+2*width  ( : length=x+4,width can't be seen clearly so I assume and take it width=x+1  hope this is equal to the width of ur question otherwise do the calculation by ur self).

Perimeter of rectangle= 2*(x+4)+2(x+1)

so now we have to find the value of "x" for which both perimeter are equal, so

perimeter of square= perimeter of rectangle

4*(x+3)=2*(x+4)+2(x+1)  we can also write as

<h2>2(x+3)+2(x+3)=2(x+4)+2(x+1)</h2><h3>This is the linear equation required</h3><h3>now to find value of "x"</h3><h3>simplify both sides, we get</h3><h3>4x+12=4x+10</h3><h2>0≠2 so that not true and also there is no value of "x"</h2>

for which both parameters become equal

<h2>so from my side "b" option is correct</h2>

Please brain-list it if u find it help-full it requires effort!

7 0
3 years ago
Read 2 more answers
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