What is the first step in solving the system by the substitution method?
x + 2y = 8
3x - 4y = 4
19
O Subtract 2y from cach side of x + 2y = 8
O Add x + 2y = 8 to 3x - 4y = 4
O Multiply x + 2y = 8 by-3
O Set x + 2y equal to 3x - 4y = 4

Answers

Answer 1
i think it’s multiply x+2y= by -3

Related Questions

If the dollar store is 5 miles away from my house, and my dad walks at 5 Mph, why has it taken my dad 12 years to come back?

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Hes friends with my dad

In 1970, the U.S. population was about 205 million people. In 2007, it was about 301 million. What was the percent increase?
I WILL GIVE BRAINALIST

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The increase is about 47%
The increase percentage was about 47%

PLEASE HELP!! Geometric Series

Answers

Answer:

Step-by-step explanation:

[tex]S_{n}[/tex] = [tex]\frac{a_{1} (1-r^{n} )}{1-r}[/tex]

[tex]S_{75}[/tex] = [tex]\frac{10(1-0.9^{75} }{1-0.9}[/tex] = 10(1 - 0.00037) / 0.1 = 99.96

Find the value of x.
(5x + 5)

Answers

5( x + 1)

I hope this helps:)

Select all ratios equivalent to 7:2 ?

Answers

Answer: 14:4 , 21:6 , 28:8 , 35:10

Step-by-step explanation:

Which term describes the place where two planes intersect?

A collinear

B coplanar

C point

D line

Answers

According to my geometry notes two planes intersect at a line. Hope that helps:)

Suppose a stage for the Lunar New Year festival has a length of 24 feet and a width of 4x + 4 feet. If the area of the stage is 384 square feet, what is the value of x?

Answers

Answer:

The value of x is 3

Step-by-step explanation:

The stage is rectangular in shape.

The formula for area of a rectangle is:

Length × Width

Length = 24 feet

Width = 4x + 4 feet

Hence:

384 = (4x + 4) × (24)

384 = 96x + 96

Collect like terms

384 - 96 = 96x

288 = 96x

x = 288/96

x = 3

The value of x is 3

quadratic equations
9 + 2x2 + 2 =0

Answers

Answer:i kinda don't understand but i guess you mean sqrt11/2?

Step-by-step explanation:2x^2+11=0 easy move

is 1/5 a integer rational irrational or real. (there can be more than one answer)

Answers

Answer:

rational

Step-by-step explanation:

A rational number is a number that can be expressed (for example, 1/3 is irrational) Hope I helped! Please mark Brainliest!!!

PLEASE HELP QUICKLY
What is the value of y

Answers

Answer:

y= 8

Step-by-step explanation:

In a Triangle we know,

W+Y+X=180 degree

then,

(180-52)+(4y-4)+3y=180

or, 128+4y-4+3y= 180

or, 7y= 180- 124

or, y= 56/7

or, y= 8

hope you got it.

Determine if the given lines are parallel, perpendicular, or neither
19. y + 5 = -12
x-y=10
20. 3x-5y=10
10x+6y=-36
I WILL GIVE BRAINEST!!! I NEED HELP DUE IN 2 HOURS
19 AND 20!!
I WILL ONLY GIVE BRAINEST IF YOU ACTUALLY DO THAT PROBABLY

Answers

Answer:

i had to do this like a few weeks ago but i only remember that the parallel ones have the same slope

Step-by-step explanation:

Step-by-step explanation:

19.y+5=-12

y=-12-5

y=-17

x-y=10

x+17=10

x=10-17

x=-7

20.3x-5y=10

3*-7-5*-17=10

-21+85=10

64=10

10x+6y=-36

10*-7+6*-17=-36

-70+102=-36

32=-36

The ratio
1 mm represents 1 cm
is the same ratio as
1:10
Complete the following
The ratio
1 cm represents 1 km
is the same ratio as
1 :

Answers

1 : 100,000
Because there are 100cm in a m and 1000m in a km
100 x 1000 = 100,000

Fill in the missing numbers in these equation
(-2) . (-4.5)= ?
?=

Answers

9
Multiplying two negatives makes it positive.

Games with this rating contain content which the ESRB believes is generally suitable for those age 10 and older
Question 3 options:

A T Teen

B eC Early Childhood

C M Mature

D E10+Everyone

Answers

Answer:

D. Everyone 10+

Step-by-step explanation:

This is the most popular age group when it comes to age ratings. For example, Mario Kart is an Everyone 10+ game.

D E10+Everyone would be the answer

The average speed of a car that travels 130 miles in 2 hours.

Answers

Answer:

65mph

Step-by-step explanation:

Answer:

speed = distance/time

speed = 130/2

speed = 65 mph

Step-by-step explanation:

Please help

Find the distance between points P(2, 2) and Q(7, 4) to the nearest tenth.

7

5.4

10.8

4.5

Answers

Answer:

5.4

Step-by-step explanation:

since they are 5 apart on the x-axis, and 2 on the y-axis. You'd multiply by the power of 2 add both of them together and square root. Giving you about 5.38516 rounding to the nearest tenth of 5.4

your answer is 5.4 because you need to divide

for each graph below, state wether it represents a function.

Answers

Answers:

Row 1: No, No, No

Row 2: Yes, Yes, Yes

===============================

Explanation:

Use the vertical line test. If it is at all possible to draw a single vertical line through more than one point on the relation curve, then the relation is not a function. This is because a function is only possible when any x input leads to exactly one y output.

So that's why graphs 1,2,3 are not functions, while graphs 4,5,6 are functions.

PLEASE HELP ME 18 POINTS PLEASE HELP

Answers

Answer:

the y-intercept it at 3

Answer:

(3,0) !

Step-by-step explanation:

The y intercept is where the given line touches the y axis (the vertical line of a coordinate plane)

I hope this helps!

The floor of the room where the documents will be displayed is rectangular
in shape. The length of the floor is four times the width. The floor area is
144 square feet. Write and solve a quadratic equation to find the length
of the display floor. Show the steps you used to solve the problem and
write your answer in a complete sentence.

Answers

Answer:

576

Step-by-step explanation:

Which of the following cannot be simplified?

Answers

Answer:

C

Step-by-step explanation:

Answer:

c. 8x-1

Step-by-step explanation:

all of the other ones can be simplified in some way

Graham drove 42 1/3 miles in 1 1/3 hours
How many hours did he take to drive one mile?

Answers

Answer: 1.89 minutes

Step-by-step explanation: If we take 1 and 1/3 hours and turn that into minutes we get 80 minutes we then divide it by the number of miles 42 1/3. We would get about 1.89, so it took about 1.89 minutes

Please answer correctly !!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

79°

Step-by-step explanation:

A straight line is 180°.

180°-101°=79°

al made a treehouse last summer. He started by making a model. the model included a window with height 1/3 inch. and width 1/6 inch. the actual tree house window had height of 1/2 yd. and width 1/4 yd. al incorrectly said that the ratio of the height of the window in the model to the height of the window in the tree house was 3/2. what was the correct ratio?

What’s is Al’s likely error?

A- He reversed the order of the terms in the ratio
B-he found the ratio of the height to width for one window instead of the ratio of heights
C- He did not covert one of the units before finding the ratio
D-He found the ratio of the widths instead of the ratio of the heights.

Answers

Answer:

b

Step-by-step explanation:

I lookdit up on google

If g(x) = 8-2 (3x-4) what is the value of g(-5)

Answers

Answer: 46

Step-by-step explanation: g(-5)= 8-2 (3(-5)-4), equals 46! Hope this helps :)

Margie couculated she would spend $175on school supply’s this year. She actually spent $96.50. What was margies percent of error

Answers

Answer:

Prob 150

Step-by-step explanation:

It costs $4.25 per game at the bowling alley.
plus $1.90 to rent shoes. If Wayne has $20.
how many games can he bowl?

Answers

Answer:

Wanye can only bowl 4 times.

Step-by-step explanation:

the expression for this equation is

20 = 4.25x + 1.90

subtract  1.90 from both sides

18.10 = 4.25x

See how many times 4.25 can go into 18.10

1.) 18.10 - 4.25 = 13.85

2.) 13.85 - 4.25 = 9.60

3.) 9.60 - 4.25 = 5.35

4.) 5.35 - 4.25 = 1.1

1.1 < 4.25 so you can't subtract it

the answer is 4 times

solve for x
(-7/6)x-6= -48
a36
b49
c-36
d-49

Answers

Answer:

-7x/6-6=-48

-7x-36=-288

-7x=-288+36

x=-252/-7

x=36 answer

Answer:

a. 36

Step-by-step explanation:

Solve for x:

[tex] \longrightarrow [/tex] [tex] \sf - \dfrac{7}{6} x [/tex] - 6 = -48

Add 6 both sides:

[tex] \longrightarrow [/tex] [tex] \sf - \dfrac{7}{6} x [/tex] + (6 - 6) = -48 + 6

6 - 6 = 0

[tex] \longrightarrow [/tex] [tex] \sf - \dfrac{7}{6} x [/tex] = -48 + 6

-48 + 6 = -42

[tex] \longrightarrow [/tex] [tex] \sf - \dfrac{7}{6} x [/tex] = -42

Multiply both side by [tex] - \dfrac{6}{7} [/tex]:

[tex] \longrightarrow [/tex] [tex] \sf - \dfrac{7}{6} x \times \bigg(-\dfrac{6}{7} \bigg) = -42 \times \bigg(-\dfrac{6}{7} \bigg) [/tex]

[tex] \sf - \dfrac{7}{6} x \times \bigg(-\dfrac{6}{7} \bigg) = x: [/tex]

[tex] \longrightarrow [/tex] [tex] \sf x= -42 \times \bigg(-\dfrac{6}{7} \bigg) [/tex]

[tex] \sf -42 \times \bigg(-\dfrac{6}{7} \bigg) = 36: [/tex]

[tex] \longrightarrow [/tex] x = 36

Which graph shows the solution to the inequality –0.5x ≤ 7.5?
__________________________________________________
A) A number line going from negative 18 to negative 8. A closed circle is at negative 15. Everything to the right of the circle is shaded.

B) A number line going from negative 18 to negative 8. A closed circle is at negative 15. Everything to the left of the circle is shaded.

C) A number line going from negative 5 to negative 2.5. A closed circle is at negative 4. Everything to the right of the circle is shaded.

D) A number line going from negative 5 to negative 2.5. A closed circle is at negative 4. Everything to the left of the circle is shaded.
__________________________________________________

Answers

Answer:

The first option

Step-by-step explanation:

Finished assignment

Answer:

the first option

Step-by-step explanation:

Jack takes out a student loan for $6,000 at a simple interest rate of 11.3% per year. How much total
interest will Jack owe at the end of 6 years? Assume he does not make any payments during that time?

Answers

Answer:

$10,068

Step-by-step explanation:

Step-by-step explanation:

6000

100+11.3÷100=1.113

6000x1.113(^6)

=

11405.71

or 11405.70

Find the surface area of this cuboid.
3 cm
5 cm
2 cm

Answers

Answer:

62 cm^2

Step-by-step explanation:

the sides are 3*5, 3*2, and 2*5, and there are two of each. 3*5 is 15, 3*2 is 6, and 2*5 is 10.

we need to find 15*2, which is 30, 6*2, which is 12, and 10*2 which is 20. then we need to add all of these together, which is 62

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