Which is the best first step when solving the following system of equations?
5C+40= 10
3C+2d=16

Which Is The Best First Step When Solving The Following System Of Equations?5C+40= 103C+2d=16

Answers

Answer 1

Answer:

multiply the second equation by - 2

Step-by-step explanation:

Given the 2 equations

5c + 4d = 10 → (1)

3c + 2d = 16 → (2)

Multiplying (2) by - 2 and adding to (1) will eliminate d

- 6c - 4d = - 32 → (3)

Add (1) and (3) term by term to eliminate d

- c + 0 = - 22

- c = - 22 ( multiply both sides by - 1 )

c = 22

Substitute c = 22 into either of the 2 equations and solve for d

Substituting into (2)

3(22) + 2d = 16

66 + 2d = 16 ( subtract 66 from both sides )

2d = - 50 ( divide both sides by 2 )

d = - 25

solution is c = 22, d = - 25

Answer 2
-2 would be your answer




Hope it helps

Related Questions

Find the unknown angle A

Answers

40! When you add all four angles of a quadrilateral together, you will always end up with 360. So, 360-75-120-125=40 :) have a great day!

Answer:

easy i dont know points yah sorry

Step-by-step explanation:

4x=-20 solve for x show your work

Answers

Answer: x = 5

Step-by-step explanation:

Answer:

x = -5

Step-by-step explanation:

We have the expression 4x = -20 and are asked to solve x.

To solve, we need to isolate x.

4x = -20

Divide 4 :

x = -5

Priya is making burgers for a party. She has 5 pounds of meat and uses 1/3 of a pound for one burger. How many burgers can priya make?

Answers

Answer: Priya can make 15 burgers with 5 pounds of meat

Step-by-step explanation:

Step 1

From Priya's receipe,

1 burger can be made from  1/3 of a pound of meat  

  How many burgers can be made from 5 pound of meat

Step 2 Using the equation below, that

1 burger = 1/3 pound of meat

Therefore 5 pounds of meat

5 x 1 / 1/3 = 5/(1/3)

= 5 x3 = 15 Burgers.

what’s the slope of the line? i’m marking a brainliest!

Answers

Answer:

m = -2

Step-by-step explanation:

To get the slope of the line, we are going to use the 2-points slope equation form

That will be;

m = (y2-y1)/(x2-x1)

(x1,y1) = (-5,11)

(x2,y2) = (8,-15)

m = (-15-11)/(8-(-5)) = -26/13 = -2

The possible mistake she might have made is placing the x-values difference over the y and her formula will look like;

m = (x2-x1)/(y2-y1)

It is an error of switching the numerator for the denominator

Help Please................

Answers

Answer:

split then d the trinangle with the base and the height and do the rectangle as length times width

Step-by-step explanation:

Answer: 1152

Step-by-step explanation:

Construct a parallelogram whose diagonals
are 5.4 cm and 6.2 cm and an angle between
them is 70°.​

Answers

Answer:

15.73 cm²

Step-by-step explanation:

Construct a parallelogram whose diagonals are 5.4 cm and 6.2 cm and an angle between them is 70°.​

To construct the parallelogram, we find the Area of the parallelogram.

Area of a parallelogram = ½ × d1 × d2 × sin (y)

Where

d1 = Diagonal 1 = 5.4 cm

d2 = Diagonal 2 = 6.2 cm

y = Angle between them = 70°

Area of the parallelogram =

1/2 × 5.4 × 6.2 × sin 70

= 15.730454472 cm²

Approximately = 15.73 cm²

Is the following triangle congruent by SAS, ASA, or SSS? Why?

Answers

Answer:

ASA

Step-by-step explanation:

As it is shown

m<A = m<Z

m<Y = m<C and

|YZ| = |AC| so the triangles are congruent by ASA

3. Rohan spends * x daily and saves y per day. What is his income after 3 weeks ​

Answers

Answer:

21(x + y)

Step-by-step explanation:

Answer:

50 is an American American and is a well Sex book that is a a good way of solving a case of a circle with a diameter of 3m in and out of out the way of solving a problem with of the eye eye eye eye drops we

Radium-226 has a half-life of 1660 years. How many years does it take a radium sample to decay to 55% of the original amount? Round your answer to the nearest year.

Answers

Answer:

1432 years

Step-by-step explanation:

A(t) = I(0.5)^t/t1/2

Where t1/2 = half life = 1660

Final amount, A(t) = 0.55 of its original amount =. 0.55I

Hence, we have

0.55I = I(0.5)^t/1660

Take the log of both sides

Log(0.55) = log(0.5)^t/1660

t/1660 = log(0.55) / log(0.5)

t/1660 = 0.8624964

t = 0.8624964 * 1660

t = 1431.7441

t = 1432(nearest whole number)

What number is 75 percent of 64? Please help!

Answers

Answer:

The answer is 48.

For a school fundraiser, Troy sold 28 bags of popcorn and 40 candy bars and made $282. Jake sold 17 bags of popcorn and 20 candy bars and made $160.50.

What was the cost of a bag popcorn?

A. $10.35
B. $6.00
C. $6.27
D. $6.50

Answers

Answer:

Cost of a bag popcorn = $6.5

Step-by-step explanation:

Given:

Number of popcorn bags sold by Troy = 28

Number of candy bar sold by Troy = 40

Number of popcorn bags sold by Jake = 17

Number of candy bar sold by Jake = 20

Amount Troy earn = $282

Amount Jake earn = $160.5

Find:

Cost of a bag popcorn

Computation:

Assume;

Cost of a bag popcorn = a

Cost of a candy bar = b

28a + 40b = 282..........eq1

17a + 20b = 160.5...............eq2

eq2 x 2

34a + 40b = 321.........eq3

eq3 - eq1

6a = 39

a = 6.5

Cost of a bag popcorn = $6.5

A large rectangular box has a volume of 15.75 cubic feet. The box is 2.5 feet long and 1.5 feet wide. What is the height of the box?

Answers

Answer:

2.5 x 1.5= 3.75

15.75/3.75=4.2

Answer- 4.2

Step-by-step explanation:

A specialty shop procures silver necklaces for 15$ a piece and offers them to customers for 33$ each. What is the mark-up percentage?

Answers

Answer:

54.5%

Step-by-step explanation:

Given data

Cost price= $15

Selling price= $33

Mark up percent =????

%markup= selling-cost/selling*100

substitute

%markup= 33-15/33*100

%markup= 18/33*100

%markup=0.545*100

%markup= 54.5%

Hence the Percent markup is 54.5%

Jasmine buys a toy horse for $36 the store increases their purchase by 10% what is the sales price of her toy horse

Answers

Answer:

39.6

Step-by-step explanation:

36*0.10 = 3.6

36+3.6=39.6

obtenha os zeros da função
[tex]f(x) = 2x {}^{2} + 32[/tex]

Answers

———111111111111111111111111111111

Amy's fish tank has 16 liters of water in it. She plans to add 6 liters per minute until the tank has more than 88 liters. What are the possible numbers of minutes Amy could add water?

Answers

Answer:

12 minutes till 88 liters

Step-by-step explanation:

Select all the expressions equivalent to:
20a + 10b
a
5(4a + 2b)
b
10(2a + b)
C С
2(10a + 5)
2(10a + 5b)
Od
Оe
5(4a - 2b)

Answers

Answer:

5(4a + 2b)

10(2a + b)

2(10a + 5b)

Step-by-step explanation:

we are trying to find equations equivalent to (20a + 10b), so distribute

5(4a + 2b) = 20a +10b YES

10(2a + b) = 20a +10b YES

2(10a +5) = 20a + 10 NO

2(10a + 5b) = 20a +10b YES

5(4a - 2b) = 20a - 10b NO

What is the slope and y-intercept of the following equation: y = -4 +2x

Answers

Answer:

slope = 2, y- intercept = - 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 4 + 2x , that is

y = 2x - 4 ← is in slope- intercept form

with slope m = 2 and y- intercept c = - 4

need to know the middle part

Answers

[tex]\Large\boxed{\tt Answer:~3x=2x+10;~x=10}[/tex]

[tex]\tt Step-by-step~explanation:[/tex]

Since it shows us that both ends of the segment in the middle bisects the sides of the triangle in the middle, we know that the segment in the middle is half of the hypotenuse (4x + 20).

[tex]\tt a)~ 3x =\frac{1}{2} (4x+20)[/tex]

Let's solve the right side of the equation by distributing[tex]\tt 0.5 (4x+20)\\4x*0.5=2x\\20*0.5=10\\\\b)~2x+10;~3x=2x+10[/tex]

Now, we can solve for x by moving the variable x to one side of the equation and everything else on the other side.

[tex]\tt 3x-(2x)=2x-(2x)+10\\\\c)~x=10[/tex]

WILL GIVE BRAINLIEST ASAP!!

1. Determine the area and perimeter of the quadrilaterals below.

Part A:

Part B:

Part C:

(see picture)

Answers

Answer: A) 1888 B) 664.225 C)?

Step-by-step explanation:

A= 42+76(1/2) = 59

59(32)=1888

A=163/10(163/4)=664.225

In x^a=y, y^b=z, z^c=x, then prove that abc=1​

Answers

Step-by-step explanation:

Let, x^a =y......(1) and

y^b =z.....(2) and

z ^c =x......(3).

Now, using (1) in (2) we get,

x ^ab =z......(4).

Now, using (4) in (3) we get,

x ^abc =x

or, x ^abc =x ^1

or, abc=1.

Hope it will help :)

Step-by-step explanation:

hope the above solution will help you

Henrik is buying a television it has a 38 inch screen (this is the diagonal measurement). If it is 18 inches tall, how wide is the screen?

Answers

Answer:

18 inches

Step-by-step explanation:

In geometry the shorter side is the width.

Therefore 18 inches is the width.

(I didn't really get this question)

Which of the following nets is for a pyramid?

Answers

2nd one

hope it helps you

The net of the pyramid is given by figure B

What is the surface area of the pyramid?

The total surface area is the summation of the areas of the base and the three other sides. A = B + ( 1/2 ) ( P x h ), where B is the area of the base of the pyramid, P is the perimeter of the base, and h is the slant height of the pyramid

Surface Area of Pyramid = B + ( 1/2 ) ( P x h )

Given data ,

A net is a two-dimensional representation of a three-dimensional shape that, when folded along the edges, forms the shape of the solid.

In the case of a pyramid, the net consists of a polygonal base and triangular faces that meet at a common vertex.

The number of triangular faces depends on the type of pyramid (triangular, square, pentagonal, etc.).

To learn more about surface area of pyramid click :

https://brainly.com/question/15050758

#SPJ2

pls help with this math question !
thx !

Answers

Answer:

h^4

Step-by-step explanation:

Please let me know if you want me to write an explanation for my answer :)

HELP I NEED HELP ASAP

Answers

Answer:

d.

Step-by-step explanation:

Answer:

option c I guess - "It increases exponentially "

The average 12-ounce container of raspberries contains 120 raspberries. Since the size of the raspberries can vary, the actual quantity of raspberries in a container can range anywhere from 4 berries below average to 4 berries above average.

Write and solve an absolute value equation to calculate the minimum and maximum raspberry quantities in a 12-ounce container.

Enter your answers in the boxes below.

Minimum Quantity:
raspberries

Maximum Quantity:
raspberries

Answers

Ik someone else already answerd but here is confirmation just incase :)

Your garden has 9 pots that use 2 1/3 bag of soil. How much soil does each pot hold? ​

Answers

Answer:

2 6/7

Step-by-step explanation:

i divided

HURRYYYY FASTTT

There are 16 fluid Ounces of juice in 2 bottles of your favorite juice. How many fluid Ounces are there in 10 bottles?
80 fluid Ounces
72 fluid Ounces
160 fluid Ounces
96 fluid Ounces

Answers

Answer:

80 fluid ounces

Step-by-step explanation:

16*5=80

Answer:

80 fluid Ounces

Step-by-step explanation:

I majored in Mathematics

Which quotient is greater than 3?

Question 4 options:

42 ÷ 19


40 ÷ 18


38 ÷ 14


36 ÷ 11

Answers

Answer:

36/11

Step-by-step explanation:

Answer:

36/15

Step-by-step explanation:

28-3(2+4)+9


With explanation

Answers

Answer:

=19

Step-by-step explanation:

28-3*2+4)+9

28-3*6+9

28-18+9

=19

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