All categories

3 years ago

Help me solve this problem please

Mathematics

2 answers:

kenny6666 [7]3 years ago

7 0

Answer:

(2, -2)

Step-by-step explanation:

4x + y = 6

x - 2y = 6

x = 2y + 6

4(2y + 6) + y = 6

8y + 24 + y = 6

9y + 24 = 6

9y = 6 - 24

9y = -18

y = -18 ÷ 9

y = -2

4x + (-2) = 6

4x - 2 = 6

4x = 6 + 2

4x = 8

x = 8 ÷ 4

x = 2

Confirm:

4x + y = 6

4(2) - 2 = 6

8 - 2 = 6

6 = 6 (Correct)

(2, -2)

harina [27]3 years ago

6 0

Answer: (2, -2)

x=2, y=-2

You might be interested in

4x ≥ 12 What does it mean?

Pepsi [2]

Answer:

X = 3 or higher

Step-by-step explanation:

hope it helps, let me know if it doesn't :)

5 0

3 years ago

Read 2 more answers

11. Health. Sherri is considering joining a health club. To be a member of Roman's Gym, she would

sergeinik [125]

Answer:

help

Step-by-step explanation:

4 0

3 years ago

A fast food restaurant sells two sizes of fries, small and large. On Friday they sold 24 fries

mihalych1998 [28]

Answer:

5:1

Step-by-step explanation:

So, we know that 20 fries were large, and 4 were small. So, we just set it up as 20:4 <em>(for every 20 large fries, there are 4 small ones)</em>. However, it needs to be simplified which results in 5:1.

Hope I helped!!

7 0

2 years ago

Need help for 2 and 3 fast

gulaghasi [49]

Answer:

$2^{-4}$ = 1/16

$6^{-5}$ × $6^{5}$ = 1

Step-by-step explanation:

$2^{-4}$ = 0.0625

0.0625 = 1/16

$6^{-5}$ × $6^{5}$ = 1

3 0

2 years ago

Read 2 more answers

Please help with 3. 4. 5.

Eddi Din [679]

3.
$\text{The Triangle Sum Theorem:}\\m\angle A+m\angle B+m\angle C=180^o$
$x+2x-1+3x+1=180\\6x=180\ \ \ |:6\\x=30$
$x^o=30^o\\(3x+1)^o=(3\cdot30+1)^o=91^o\\(2x-1)^o=(2\cdot30-1)^o=59^o$
4.
$r-6+3r-3+5r=180\\9r-9=180\ \ \ |+9\\9r=189\ \ \ |:9\\r=21$
$(r-6)^o=(21-6)^o=15^o\\(3r-3)^o=(3\cdot21-3)^o=60^o\\(5r)^o=(5\cdot21)^o=105^o$
5.
$\text{The Exterior Angle Theorem:}\\m\angle CAB+m\angle ABC=m\angle DCB$
$2g+9g=110\\11g=110\ \ \ |:11\\g=10$
$m\angle A=2\cdot10^o=20^o\\m\angle ACB=180^o-110^o=70^o\\m\angle B=9\cdot10^o=90^o$

4 0

3 years ago