Mathematics High School

Question 5
On problem #18, which variable will be the easiest to isolate in order to solve the system using
substitution?
A: x, in the top equation
B: y. in the top equation
C: x, in the bottom equation
D: y, in the bottom equation
Can someone please please please help me!

Question 5On Problem #18, Which Variable Will Be The Easiest To Isolate In Order To Solve The System

Answers

Answer 1
The answer is B because you would subtract 2x so the -y is by itself and then since there is a invisible -1 in front of the y you would divide everything by that -1 giving you the answer y=2x + 7 and you can just substitute that equation in for y in the bottom equation

Related Questions

PLZZZ HELP DUE IN 5mins

Answers

Answer:

y=-6x+360

Step-by-step explanation:

The y intercept, b, is easy; its already listed as 360.

The slope we find by using some points:

300-360

10-0

=

-60

10

=

m=-6

y=mx+b

y=-6x+360

Raja claims that to add two fractions with unlike denominators, first you need to determine the smallest number that is a multiple of both denominators. Then change the denominators in both fractions and keep the numerators the same.

Answers

Answer:

Incorrect

Step-by-step explanation:

This is incorrect. In order to add two fractions that have unlike denominators, it is true that you first need to find a common denominator. When you change a fractions denominator you must also change it's numerator in proportion to the change in the denominator. For example, if you change the denominator in the fraction [tex]\frac{1}{2}[/tex] into a 4 then you are multiplying the denominator by 2, therefore you will also need to multiply the numerator by 2 which would give you a new fraction of [tex]\frac{2}{4}[/tex]

20 points

When you find a point on a graph that you think is the intersection, the best way to double check your answer is to:

substitute in the x value to see if both of the y values of both of the equations match the one you approximated from the graph.


substitute in the x value to see if one of the y values of one of the equations matches the one you approximated from the graph.


substitute in the y value to see if one of the x values of one of the equations matches the one you approximated from the graph.


substitute in the x value to see if both of the x values of both of the equations match the one you approximated from the graph.

Answers

Answer: Substitute in the x value to see if both of the y values of both of the equations match the one you approximated from the graph.

Step-by-step explanation:

I guess that we are working with systems of equations like:

y = f(x)

y = g(x)

Where an intersection is a solution that works for both equations, which means that the graphs will intersect each other in that point.

This means that for a given value x = x0, we must have:

f(x0) = g(x0).

Now, when you find a point that you think that is an intersection, you should substitute the x value in both functions, and see if the y-values coincide.

This will be equivalent to look if f(x) = g(x) for that particular value.

then the correct option is:

substitute in the x value to see if both of the y values of both of the equations match the one you approximated from the graph.

what is the slope of a line parallel to slope 2 and Perpendicular to slope 2?

Answers

Answer:

it would be right next to the other line

Step-by-step explanation:

Parallel = same slope
It would still be slope 2

Perpendicular = opposite sign and reciprocal slope
It would be slope -1/2

pllllllllllllllzzzzzzzzzzzzzzz
hhheeeellllllllpppppppppppp

Answers

Answer:

I think it should be the third option

find the number of kilograms in 250 pounds. there are 1000 grams in a kilogram and 454 grams in a pound.

Answers

Answer:

113 kilograms

Step-by-step explanation:

PLZ help need this asap PLZ give an explanation. WILL GIVE BRAINLIEST

Answers

Answer: Its the third one from up. Second from bottom.

Step-by-step explanation: I looked at all of the other ones and they did not make sense. Let me know if I got wrong. God Bless!

Answer:

x = 73 is the number of hours she worked at her job last month.

Step-by-step explanation:

12 is the hourly wage that she earn at her job.

340 is the bonus she received.

1216 is the total she earn from her job.

Liliana has $5.60 to spend on tape. The tap cost $0.07 per foot. How many feet of tape can she buy? Which equation matches the scenario explained above?

Answers

Answer:

she can buy 70 ft tape

Step-by-step explanation:

5.6 ÷ 0.07

7. The owner of an ice cream stand needs to order wafle cones and sugar cones. There is
room to store 10 boxes of cones. Each box of sugar cones costs $100, and each box of
waffle cones costs $150. He has $1250 budgeted for the purchase of cones.
a. What variables will you use?

Answers

s = sugar cones

w = waffle cones

slope = 5, goes through the point (2, 7)

Answers

Y-7=5(x-2) -> y-7=5x-10 -> y=5x-3
Final answer is y=5x-3

Rawr ... someone help me :) please it’s math and the last word says Box btw !

Answers

Answer:

4/7

Step-by-step explanation:

Have a nice day

Answer:

4/7

Step-by-step explanation:

I said so hun

Two polygons that can be mistaken as similar

Answers

Answer:

polygons that have the same shape, but not the same size .

Step-by-step explanation:

Use the order of operations to evaluate this expression: 7 + (5 – 9)2 + 3(16 ÷ 8).​

Answers

Answer:

=  7 + (5 – 9)2 + 3(16 ÷ 8)

= 7 + (-4)2 + 3(2)

= 7 + (-8) + 6

= -1 + 6

= 5

Step-by-step explanation:

Remember to use PEMDAS when solving.

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

8,10,20 pls mark me as brainliest

Answer:

A triangle can not have a side that is longer than the sum of the other two sides.  In this case, the second answer does not fit a triangle, as 20 > 8 + 10.

Step-by-step explanation:

PLS HELP ME 5x+3=7x-1

Answers

Answer:

Hello! the answer is X=2

Step-by-step explanation:

Answer:

The answer is x=2

Step-by-step explanation:

the set of non integers

Answers

Step-by-step explanation:

A non negative integer is an integer that that is either positive or zero. It's the union of the natural numbers and the number zero

(ABCD) = (A'B'C'D'). If A is (6, −8), A' is (−2, 4), and B is (4, −6), what are the coordinates of B'?

Answers

Answer: (6, 6)

In this problem the point is moved over 2 up and 2 to the right form A to A'

The coordinates of B' are (-4, 6).

What is translation?

A translation is a geometric change in Euclidean geometry that involves moving each point in a figure, shape, or space by the same amount in one direction. A translation may alternatively be thought of as moving the origin of the coordinate system or as adding a constant vector to each point.

Since (ABCD) = (A'B'C'D'), we know that corresponding points in the two quadrilaterals have equal coordinates.

Therefore, we can use the coordinates of A and A' to find the translation vector that takes A to A'.

We can then apply this same vector to B to find its image B'.

The translation vector that takes A to A' is given by the difference A' - A:

A' - A = (-2, 4) - (6, -8) = (-8, 12)

So, the same translation vector takes B to B', and we have:

B' = B + (-8, 12) = (4, -6) + (-8, 12) = (-4, 6)

Therefore, the coordinates of B' are (-4, 6).

To learn more about translation in geometry;

https://brainly.com/question/2373420

#SPJ7

PLEASE HELP!
I NEED BOTH PARTS!

Answers

Answer:

a) Yes agree

and b) (I'm not too sure about this one but I think..) By CPCT that is Corresponding parts of congruent triangles are equal/congruent theorem.

Step-by-step explanation:

I'll use this " [ " symbol for angle.

a) yes agreed ;

AB = CB (B is the midpoint of AC)

[ ABD = [ CBD = 90°

BD = BD (common side)

--> therefore by SAS criteria triangle ABD is congruent to triangle CBD.

and by CPCT .... AD = CD .

b) AD = CD (proven by CPCT)

...answer for b you're likely suppose to write it that way. so yeah hope this helps.

The senior class has 412 students. They are assigned to different homerooms. There are 28 students in the smallest homeroom and the remaining 12 homerooms have the same number of students. How many students are in each of remaining 12 homerooms?


Just give me the equation.​

Answers

Answer:

There are 32 students in the other 12 homerooms.

Step-by-step explanation:

32x12=384

384+28=412

Full equation: 32x12=384 28=412

Savelot offers two types of baseballs bats the wood bat sell for 24$ and the metal bats sell for 30 in one day save lots sold 23 base ball bats these recipts for those bats totaled $606 how many of each type of bat was sold

Answers

Answer:

Step-by-step explanation:

Let us represent

Let the wood bat = w

Let the base ball bats = b

Savelot offers two types of baseballs bats the wood bat sell for 24$ and the metal bats sell for 30 in one day save lots sold 23 base ball bats these recipts for those bats totaled $606 how many of each type of bat was sold

System of Equations

w + b = 23.... Equation 1

b = 23 - w

24w + 30b = 606..... Equation 2

We substitute:30 - w for b

Hence:

24w + 30(23 - w) = 606

24w + 690 - 30w = 606

24w - 30w = 606 - 609

-6w = -84

w = -844/-6

w = 14 wood bats

b = 30 - 14

b = 16 base ball bts

Need this it is due tomorrow please.

Answers

Answer:

a) parallel lines : CE and BF

b)perpendicular lines : DE and EF

c) is FE parallel to CA : no

Step-by-step explanation:

hope this helps

Answer:

a. CE║BFb.DA and BFc. No, because Parallel lines are lines in a plane that are always the same distance apart. Parallel lines never intersect. Perpendicular lines are lines that intersect at a right (90 degrees) angle.

Step-by-step explanation:

There are 914.4 millimeters in a yard . There are 3 feet in a yard . How many millimeters are in a foot !

Answers

Answer:

304.8 millimeters

Step-by-step explanation:

Answer:

0.003

Step-by-step explanation:

What is the y-intercept of the equation?

Answers

The y intercept is 0
Y = mx + b
m = 7, there is no b

Lamar drinks 8 ounces of water with breakfast, 6 ounces of water with his vitamins, 16 ounces of water with his lunch, 16 ounces of water with his dinner, and 32 ounces of water from a bottle he carries throughout the day. Write and evaluate a numerical expression for the amount of water in ounces that he drinks in a week.

Answers

Given:

Lamar drinks water with,

Breakfast = 8 ounces

Vitamins = 6 ounces

Lunch = 16 ounces

Dinner = 16 ounces

Bottle = 32 ounces

To find:

The a numerical expression for the amount of water in ounces that he drinks in a week.

Solution:

One day consumption of water by Lamar is

[tex]8+6+16+16+32=78[/tex]

We know that,

1 week = 7 days

One day consumption of water = 78 ounces

1 week (7 days) consumption of water = 7× One day consumption of water

                                                               = 7×(8+6+16+16+32) ounces                                                                

                                                               = 7×78 ounces

                                                               = 546 ounces

Therefore, the required numerical expression for the amount of water in ounces that he drinks in a week is 7×(8+6+16+16+32) ounces and the value is 546 ounces.  

yooooooooooooooooooooooooooooooooooooooooooooooooooooo

Answers

Answer:

yooooooooooooooooooooooooooooo

3+(−4)−8−(−1)

can guy help me pls

Answers

Answer:

-10

Step-by-step explanation:

Answer:

-8

Step-by-step explanation:

2a^2-12a + 18, please try to explain or show how you got it...thank you :))

Answers

Answer:

35 is your answer!!

Step-by-step explanation:

have a good day <3

In the picture below A II b and m<23
angle measures
112°. Find the remaining

Answers

Answer:

Step-by-step explanation: dude i think we in the same class for math

solve for x
10x - 72
3x - 4

Answers

Answer:

9.71 Only way I could think of to solve it

Step-by-step explanation:

10x-72=3x-4

7x=68

x=9.71

Solve for g.

g - 15 = 4

Answers

Answer:

11

Step-by-step explanation:

Answer:

-11

Step-by-step explanation:

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