Multiply each equation by a constant that would help to eliminate the y terms.
2x-5y = -21
3x-3y = -18
What are the resulting equations?
6x-15y = -63
- 15x+15y = 90
6x-15y = 63
-15x+15y = 90
6x-15y=-63
- 15x+ 15y = -90

Answers

Answer 1
6x-15y=-63
-15x+15y=90

This is because you are multiplying the first equation by a constant of 3 and the second equation by 5 so that you can have -15y and +15y which will cancel each other out.

Related Questions

I want to take the measurements of my 5 avocado trees and order their
heights from shortest to tallest, that way they can get enough sunlight to
continue growing. I have to worry about sea level, so those above sea
level get sunlight more easily (positive is above sea level, negative is
below sea level). The 5 heights are in feet: 6,-3, 2,-8,-6. Please help me
order them from shortest to tallest so I plant them in the right order to get
enough sunlight.


Answers

Answer:

If we are saying everyhing above sea level is taller then plants under sea level. Then here is the order

Step-by-step explanation:

-8, -6, -3, 2, 6

And just in case it's above sea level the shortest then 6, 2, -3, -6, -8

PLEASE HELP! WILL GIVE BRAINLIST!

Jimmy wants to keep track of a friends college savings account and use slope intercept form to build a function, y = mx + b. What information will he need to know to accurately keep track of the account and create a function that will give the number of dollars in the account based on the number of months his friend will save money for college?

A. The initial amount of money use to start the account, and use that deposit for B

B. All of the above

C. The amount of money he will save each month, and use that for slips or m

D. The amount of months he will save money for a college, and use that amount of time for x

Answers

Answer: here is all the answers for assess it #70: day 122

1. F(x) = 225x + 45

2. F (x)= 7x - 105

3. the function would be a curved line if you were to graph it using intercepts or a simple function table

4. The x-intercept is (10,0)

5. All of the above

The lines 2x=ky+2 and (k+1)x=6y-3 have same gradient. Find possible values of k
I need the answers ASAP please!

Answers

Answer:

k = 3 or k = -4

(Anyone can correct me if I'm wrong)

Step-by-step explanation:

[tex]2x=ky+2\to\ eq1\\(k+1)x=6y-3\to\ eq2\\$Change to this form: $y=mx+c\\ky=2x-2\\y=\frac{2x-2}{k}\\$gradient of eq1: $\frac{2}{k}\\6y=(k+1)x+3\\y=\frac{(k+1)x+3}{6}\\y=\frac{k+1}{6} x+\frac{3}{6}\\y= \frac{k+1}{6} x+\frac{1}{2}\\$gradient of eq1: $\frac{k+1}{6}\\$Since gradient, m, is the same for both lines,$\\\frac{2}{k}=\frac{k+1}{6}\\12=k^{2}+k\\k^{2}+k-12=0\\(k-3)(k+4)=0\\k=3 $ or $ k=-4[/tex]

What is the mean?
-9 -9 -3 -6 -7

Answers

Answer:

-6.8

Step-by-step explanation:

To find the mean, you add all the numbers together, then divide that number by the amount of numbers there were, so:

-9 + -9 + -3 + -6 + -7 = -34

-34/5 = -6.8

Yoooo, if you gave me brainliest that would be pretty pog. Because as it turns out, only a small percentage of the people I answer actually give me brainliest. I'm trying to get Virtuoso by the end of the day, and you giving me brainliest would really help out. Also while you're at it leave a thanks and a 5-star rating to help boost this answer in the brainly algorithm.

Which expression is equivalent to 4a+2b
A.a+a+a+a+b+b
B. 4+2+a+b
C.6(a+b)
D.4+a x 2+b

Answers

Answer:

Answer is A

Step-by-step explanation:

a+a+a+a+b+b =4a+2b

The answer is a
A hope that helps you

The formula for volume of this rectangular prism is:
V=2x(exponent is 3) +17x (exponent is 2) +46x

Answers

The answer for you question is 343

Find the class mark of the class 160- 165​

Answers

Answer:

the classmark of the class is 162.5

Step-by-step explanation:

The computation of the class mark is shown below:

Given that

160 - 165

So, the class mark of the class is

= (Upper limit + lower limit) ÷ 2

= (160 + 165) ÷ 2

= 162.5

Hence, the classmark of the class is 162.5

(Help please) Find both the perimeter and the area of the following rectangle
2x+3
X+6
Perimeter:_____
Area:____

Answers

Given:

Length of a rectangle = (2x+3) units

Width of the rectangle = (x+6) units

To find:

The perimeter and the area of the rectangle.

Solution:

We know that, the perimeter of the rectangle is

[tex]Perimeter=2(Length+Width)[/tex]

[tex]Perimeter=2((2x+3)+(x+6))[/tex]

[tex]Perimeter=2(3x+9)[/tex]

[tex]Perimeter=6x+18[/tex]

The area of rectangle is

[tex]Area=Length\times width[/tex]

[tex]Area=(2x+3)\times (x+6)[/tex]

[tex]Area=2x^2+12x+3x+18[/tex]

[tex]Area=2x^2+15x+18[/tex]

Therefore, [tex]Perimeter=6x+18[/tex] and [tex]Area=2x^2+15x+18[/tex].

Help me please with this math question

Answers

34 34/100. 17

27. 27/100. 13.5

21. 21/100. 10.5

18. 18/100. 9

I think this is right!

What is the equation of the graph below?
А
y = 2(x + 4)2 – 2
B
y = (x – 4)2 – 2
C y = 2(x - 4)2 – 2
D
y = 2(x – 4)2 + 4

Answers

Answer:

f(x) = 1(x - 4)^2 - 2

Step-by-step explanation:

Recall that the vertex form of the equation of a parabola is

f(x) = a(x - h)^2 + k, where (h, k) is the vertex and a is a scale factor which stretches or compresses the graph vertically.

Looking carefully at the graph, we see that h must be 4 and k must be -2.

Thus, the equation of this parabola is f(x) = 1(x - 4)^2 - 2 (which matches Answer B)

ANSWER QUICK!!

Which of the following is an example of the ASCEND?

A. a bird landing on the ground
B. a hiker climbing a mountain
C. a car traveling through a tunnel
D. a submarine lowering below the surface

Answers

Answer:

answer is B

Step-by-step explanation:

he goes up

B
Ascend means to go upward and when the hiker climbs a mountain he is climbing upwards

The helicopter can travel 75 miles per hour. How many miles per minute can the helicopter travel?

Answers

Answer:

4.69 miles per minute

Step-by-step explanation:

75 ÷ 60 (60 minutes in an hour) = 4.6875

4.6875 rounded to the nearest hundredth is 4.69

Kathy is making 3 batches of pancakes for a brunch party. If each batch needs 1712 cups of milk, how much milk does she need altogether?

Answers

Answer:

5,136

Step-by-step explanation:

because 1,712×3=5,136

Cody rented a bike from John's Bikes. It
cost $16 plus $4 per hour. If Cody paid
$24, then he rented the bike for how many
hours?

Answers

It would be two hours. This is because 24-16=8 and 8 divided by 4 is 2. Hope this helps

Find the missing length of the right triangle below

Answers

Answer:

C = 13

Step-by-step explanation: According to the pythagorean theorem, which states A² + B² = C². This means that in this equation 5²+12²=x². When we solve this we get 169=x². Since 169 is the perfect square of 13 therefore the answer is 13.

24.
Tyannah purchased 4 dozens of eggs for $50.00. She sold each egg for
$2.00. How many eggs must she sell to make a profit of $34.00?​

Answers

Answer:

I think it would be 17 because 34 ÷ 2 = 17

Identify the first step when evaluating the expression 11 – 10 ÷ 2 + 6 × 1

Answers

Answer: use cymath

Step-by-step explanation:

Answer:

6.5

Step-by-step explanation:

i think

Who understands how to do this mess?

Answers

Answer: 140

Step-by-step explanation:

Angle 4 and A are supplementary meaning they add to 180

Thus you can do 180-40 = 140 to get that angle A = 140.

Since the two lines are parallel, Angle A is congruent to Angle D. Then, since Angle D is opposite Angle 3, we know that that Angle 3 and Angle D are congruent.

What is the answer????

Answers

Jenna would’ve been on the job for 23 years

Select the correct expressions.
Identify the equivalent expressions of 412x + x - 3) - 3x + 3 by substituting x = 2 and x = 3.
9x - 9
9x - 1
9x + x - 9
9(x - 1)
4(3x - 3) + 3 - 3x

PLEASE I’LL GIVE BRAINLIEST

Answers

Answer:

9x -9

9(x - 1)

4(3x-3) - 3x + 3

 

( Hope this helps ) <(^w^)>

hmm i sure do ask a lot of questions

Answers

Answer:

A bc it show that it travels 25 miles to the hour.

In other words Miles per hour= 25 to 1 hour

Step-by-step explanation:

Hope this helps :)

A bc the other ones literally make no sense lol

In triangle RST the vertices have coordinates of R(-1,10),S(5,4)and T (-4,-2). If the midpoints of side RS and RT were connected with a segment, what would the slope of this segment be?


Plz helppp

Answers

Answer:

[tex]\frac{2}{3}[/tex]

Step-by-step explanation:

Midpoint of a line segment joining points [tex](x,y)[/tex] and [tex](u,v)[/tex] is given by [tex](\frac{x+u}{2},\frac{y+v}{2} )[/tex]

Points are R(-1,10),S(5,4)and T (-4,-2).

Midpoint of RS = [tex](\frac{-1+5}{2},\frac{10+4}{2} )=(\frac{4}{2},\frac{14}{2} )=(2,7 )[/tex]

Midpoint of RT = [tex](\frac{-1-4}{2},\frac{10-2}{2} )=(\frac{-5}{2},\frac{8}{2} )=(\frac{-5}{2},4)[/tex]

Slope of a line joining points [tex](a,b)[/tex] and [tex](c,d)[/tex] is given by [tex]\frac{d-b}{c-a}[/tex]

Slope of line joining midpoints of side RS and RT = [tex](\frac{4-7}{\frac{-5}{2}-2 })=(\frac{-3}{\frac{-9}{2} })=\frac{2}{3}[/tex]

Write an expression equivalent to 6 − 2 + 5 + 4 that only has two terms. PLS HELP

Answers

Answer:

15 - 2

Step-by-step explanation:

hope this helps :)

Answer:

4 + 9 should be the answer

Step-by-step explanation:

What’s the Awnser my dudes and dudetts

Answers

What’s the question?

Answer: What do you want us to solve there is no photo and you didn't write any problem

Step-by-step explanation:

Please help :) i will give brainliest for correct

Answers

ANSWER - Number Five - Yep
Number Six - NO!!!!!!!!

use adjacent angles to solve for X

Answers

Answer:

69 degrees!

Step-by-step explanation:

Angle MKL = 180 - 146 = 34 (Angles on a straight line add up to 180)

Angle x = 180 - 77- 34 = 69 (Angles in a triangle add up to 180)

Hope this helps! Please mark as brainliest!

;)

There are 24 boys and 16 girls in a hall, each holding coins in their hand.The mean number of coins for the children is 11, The mean number of coins for the boys is 9 Work out the mean number of coins for the girls.

Answers

Answer:

14

Step-by-step explanation:

The computation of the mean number of coins for the girls is shown below:

Since there are 24 boys and 16 girls so the total children is 40

So the number of coins for all children is

= 40 × 11

= 440

And, the number of coins for all boys is

= 9 × 24

= 216

Now the mean is

= (440 - 216) ÷ 16 girls

= 14

SOMEONE PLEASE ANSWER QUICK IM STUCK ON THIS ONE Factor 4n^2+12n.

Answers

4n (n+3), hope this helped

What is 15% of a restaurant check for $46.72? Round your answer to the nearest hundredth, if necessary.

Answers

Answer:

$7.01

Step-by-step explanation:

46.72 * 0.15 = 7.008

7x -2(x-11)=-103
what is x

Answers

Answer:

the answer is x=−25

Step-by-step explanation:

hoped I helped:)

Answer:

7x-2x+22=-103

5x. =-103-22

5x =-125

X.=-25

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