2 years ago

5) 5x-4= 20 у = 3х - 12 solve

Mathematics

1 answer:

vredina [299]2 years ago

6 0

Answer:

Step-by-step explanation:

5x-4=20

5x=24: x=24/5

y=3x-12

y=3(24/5)-12

y = (72-60)/5

y=12/5

You might be interested in

Q(–1, a) is 4 √5 units away from P(3, –2). Find all possible values of a.

vagabundo [1.1K]

Answer:

a=6,-10

Step-by-step explanation:

$4\sqrt{5}=\sqrt{(3+1)^2+(-2-a)^2} \\squaring\\80=16+(2+a)^2\\80-16=(2+a)^2\\(a+2)^2=64\\taking~square ~root\\\\a+2=\pm 8\\either \\a+2=8,\\a=8-2=6\\or\\a+2=-8\\a=-8-2=-10$

8 0

2 years ago

Please Help!!!

Mkey [24]

The equation looks like this:

26=x*3.5+8.50

where x is the number of pen you bought.

We solve it like this:
first, we subtract 8.50 from both sides:

17.50 =3.5*x

now we divide both sides by 3.5:
5=x

so you purchased 5 pens.

3 0

2 years ago

+23+-26 RESPUESTA PORFIS

den301095 [7]

Answer:

-3

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Sandra throws an object into the air with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet ab

Blababa [14]

<span>To solve it, use the quadratic formula with (½)(-32.174 ft/s²) = a, 38 ft/s = b, and 30 ft = c. There are two answers; the only positive answer is t = 2.986 s </span>

4 0

2 years ago

Read 2 more answers

One leg of a right triangle is 10 units, and its hypotenuse is 12 units. What is the length of the other leg?

denis-greek [22]

Answer:

about 7 units

Step-by-step explanation:

10 $10^{2} + b^{2} = 12^{2} \\100+b^{2} = 144 \\144- 100= 44\\=\sqrt{44} \\= 6.6\\round \\=7$

3 0

3 years ago