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rosijanka [135]
2 years ago
12

May someone pls assist me on this question

Mathematics
2 answers:
OleMash [197]2 years ago
7 0

x = 4, -8

Isolate the Variable by dividing each side by factors that don't contain the variable

Arada [10]2 years ago
5 0

Answer:

x=-4 or x=-8

Step-by-step explanation:

I think those are correct. Pls let me know if they are wrong.

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Andy bought 4 hamburgers snd 2 milkshakes for $13.50. Danny bought 3 hamburgers and 1 milkshake for $9.25. What cost of a hambur
Molodets [167]

A hamburger costs $2.5 and a milkshake costs $1.75

Step-by-step explanation:

  • Step 1: Form equations from the given details. Let cost of 1 hamburger be H and cost of 1 milkshake be M.

   4H + 2M = 13.50 ------ (1)

&  3H + 1M =   9.25 ------ (2)

  • Step 2: Multiply eq(2) with 2 to make coefficients of M equal.

   6H + 2M = 18.50 ------- (3)

  • Step 3: Subtract eq(3) from eq(1)

⇒ - 2H = - 5

⇒ H = $2.5

  • Step 4: Substitute value of H in eq(2) to find M.

⇒ 3 × 2.5 + M = 9.25

⇒ 7.5 + M = 9.25

⇒ M = $1.75

4 0
3 years ago
Root 3 - root 3 over root 21
Airida [17]

Answer:

-6.205

Step-by-step explanation:

4 0
3 years ago
I need help big time. Will reward BRAINLIEST to BEST answer!!!
Kisachek [45]
The find the equation of a line in any form, you will have to find out the slope first:
m=(y2-y1)/(x2-x1)=(48-12)/(32-34)=-18
the simplified form is the slope-intercept form, so next we need to find the y intercept, 
y=mx+b =>y=-18x+b
Use any of the two given points to find out b: 12=-18(34)+b =>b=624
so the equation is: y=-18x +624
Please double check the calculation by yourself
4 0
3 years ago
Read 2 more answers
Bill is playing a game of chance with the following payout. 30% of the time you will lose 20 dollars, 20% of the time you lose 4
tensa zangetsu [6.8K]

Answer:

E(x) = -7

Step-by-step explanation:

This is middle school math? It uses some advanced statistics

E(x) = (.3*-20)+(.2*-40)+(.1*50)+(.4*5)

E(x) = -7

Bill should not play the game as he will lose money on average

If Bill owns the game, he should play it as it would be an effective way to launder money

4 0
4 years ago
Pls help !!!!
Nuetrik [128]

Answer:

At any given moment, the red ant's coordinates may be written as (a, a) where a > 0. The  red ant's distance from the anthill is a\sqrt{2} . The black ant's coordinates may be written  as (-a, -a) and the black ant's distance from the anthill is a\sqrt{2}  . This shows that at  any given moment, both ants are  a\sqrt{2} units from the anthill.

Step-by-step explanation:

Given:

red ant's coordinates written as (a,a)

black ant's coordinates are written  as (-a, -a)

To find:

The distance of red and black ants from anthill

Solution:

Compute the distance of red ant from the anthill using distance formula

d (red ant) = \sqrt{(a-0)^{2}+ (a-0)^{2}}

                 = \sqrt{a^{2} + a^{2} }

                 = \sqrt{2a^{2} }

                 = a\sqrt{2}

So distance of red ant from anthill is a\sqrt{2}

Compute the distance of black ant from the anthill using distance formula

d (black ant) = \sqrt{(-a-0)^{2}+ (-a-0)^{2}}

                    = \sqrt{(-a)^{2} + (-a)^{2} }

                    = \sqrt{a^{2} + a^{2} }

                 = \sqrt{2a^{2} }

                 = a\sqrt{2}

So distance of black ant from anthill is a\sqrt{2}

Hence both ants are a\sqrt{2}   units from the anthill.

4 0
3 years ago
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