solve the system by substitution 2x + 5y = - 3 and y = - 1

Answers

Answer 1

Answer:

x = 1

y= -1

Step-by-step explanation:

Plug in for y

2x + (5)(-1) = -3

2x - 5 = -3

2x = - 3 + 5

2x = 2

x = 1


Related Questions

Marnita is collecting seashells she starts bher colletion with 16 shells and everyday walks on the beach and finds 4 more how many seashells will she have after 6 days?

Answers

X=number of days
X=6
16+4•X=
16+4•6=
16+24=40
Marnita will have 40 seashells after 6 days

The triangles on the grid below represent a translation.

On a coordinate plane, triangle A B C is shifted 5 units up to form triangle A prime B prime C prime.

Which translation is shown on the grid?
a horizontal translation only
a vertical translation only
a horizontal translation followed by a vertical translation
a vertical translation followed by a horizontal translation

Answers

Answer:

B. Vertical Translation only

Step-by-step explanation:

:>

The triangle ABC is vertically translated only. Then the correct option is B.

What is a transformation of geometry?

A spatial transformation is each mapping of feature shapes to itself, and it maintains some spatial correlation between figures.

Reflection does not change the size and shape of the geometry.

Rotation does not change the size and shape of the geometry.

Translation does not change the size and shape of the geometry.

On a coordinate plane, triangle ABC is shifted 5 units up to form triangle A'B'C'.

The diagram is given below.

From the diagram, we can clearly observe that the triangle ABC is vertically translated only.

Then the correct option is B.

More about the transformation of geometry link is given below.

https://brainly.com/question/22532832

#SPJ5

(2.5) to the power of 2 in expanded form is ? answer please ASAP pleaseeee

Answers

Answer:

2.5*2.5

Step-by-step explanation:

the power of 2 means multiply that many times, so you would multiply 2.5 by itself twice, or 2.5*2.5. Simplified this is 6.25

6.25 in expanded form is 6+0.2+0.05

-1 = d/4

solve the equation.

Answers

Answer:

d = -4

Step-by-step explanation:

Multiple both sides by 4 to get rid of the fraction

Answer:

d = - 4

Step-by-step explanation:

Given

- 1 = [tex]\frac{d}{4}[/tex] ( multiply both sides by 4 to clear the fraction )

- 4 = d

Is w = 1 a solution to the inequality below?
w>27?
yes or no?

Answers

Answer:

no

Step-by-step explanation:

w would have to be bigger or greater than 27. 1 is less than

Answer: yes, 1> 27 is an inequality. This states 1 is greater than 27, which is incorrect the correct solution would be w<27.

hope this helps :)

One copy of a new book by Amanda's favorite author cost $9.45. If a total of 2,740 copies of the book were sold on the first day of the book's release, what were the total sales that day?

Answers

Answer:

$25893

Step-by-step explanation:

Answer:

$25,893

Step-by-step explanation:

Take a factor out of the square root:

Answers

Answer:

[tex]-y\sqrt{3}[/tex]

Step-by-step explanation:

Under the radical there is a perfect square, one can take the perfect square out, and write it by its square root. The result of taking the principal square root is always positive, but it is given that the perfect square factor is negative, thus, one must multiply the square root by the negative sign to ensure that the result is positive.

Answer:

[tex]-y\sqrt{3}[/tex]

Step-by-step explanation:

Is this correct?????

Answers

Answer:

yes

Step-by-step explanation:

Please Help!!!! need it just right now

Answers

Answer:

A. y = x² + 12x - 8

Step-by-step explanation:

The u-shaped function should have:

positive leading coefficienteven degree

The only function with mentioned parameters is:

y = x² + 12x - 8

Correct option is A

The other options don't fit:

B. Even degree with negative leading coefficientC. Odd degreeD. Odd degree

What is the volume of a hemisphere with a radius of 60.7 m, rounded to the nearest tenth of a cubic meter?

Answers

Answer:

468408.4m

Step-by-step explanation:

The guy above knows

The volume of a hemisphere with a radius of 60.7 m is 468170.95 cubic meter.

What is the volume?

Volume is the measure of the capacity that an object holds.

Formula to find the volume of the object is Volume = Area of a base × Height.

Given that, a radius of a hemisphere is 60.7 m.

Half of a sphere, or a hemisphere, is a three-dimensional (3D) shape. The form we obtain when a sphere is split by a plane going through its centre is known as a hemisphere. A hemisphere has one flat circular base and a curving surface. The quantity of unit cubes that can fit inside a hemisphere is known as its volume.

We know that, the volume of a hemisphere is (2/3)πr³.

Here, volume is 2/3 ×3.14×60.7³

= 2/3 ×3.14×223648.543

= 468170.95 cubic meter

Therefore, the volume is 468170.95 cubic meter.

To learn more about the volume visit:

https://brainly.com/question/13338592.

#SPJ3

Can someone give me the correct answer to this question.

I will mark you brainliest for the correct answer.

The answer choices are at the bottom of the pick.

This is a big test.

Please help!!!

Answers

Answer:

Step-by-step explanation:

Supplementary

180-112= 68

alternate exterior

112

Answer:

∡4 and ∡3 are supplementary

∡3 = 68°

∡5 is an alternate-exterior to ∡4

∡5 = 112°

Step-by-step explanation:

Solve the simultaneous equation:
2x+3y=13

X+2y=9​

Answers

Answer:

2x + 3y = 13

4x - y = -2

In the second equation, subtract 4x from both sides.

-y = -2 - 4x

Divide both sides by -1.

y = 2 + 4x

Put this into the first equation in place of y.

2x + 3(2 + 4x) = 13

Multiply everything in the parenthesis by 3.

2x + 6 + 12x = 13

Combine like terms.

14x + 6 = 13

Subtract 6 from both sides.

14x = 7

Divide 14 on both sides.

x = 7 / 14

x = 0.5

Put this into the second equation in place of x.

4(0.5) - y = -2

2 - y = -2

Subtract 2 from both sides.

-y = -4

Divide both sides by -1.

y = 4

So x = 0.5 and y = 4.

Step-by-step explanation:

There are 150 children at an art camp. 71 signed up for painting. 62 children signed up for sculpting and 28 of them also signed up for painting. Create a two-way table using the given data.

Answers

Answer:

99/150= 62/150

Step-by-step explanation:

Write the equation in standard form for the circle x2+y2–49=0.

Answers

Answer:

2x+2y=49

Step-by-step explanation:

tell me if this is wrong

a coin is tossed and a dice is rolled. What is the probability of getting tails with rolling a 2?

Answers

Answer:

50% for the coin and 1/6 chance for the dice

What is the positive solution to this equation?
4x2 + 12 x= 135

Answers

The answer is 2.25.

Please help!! Find the radius r.

Answers

if u need to go from radius to diameter multiply radius times 2: d=2r

What is the shaded area ? Help Asas please !..

Answers

Answer:312

Step-by-step explanation:

hii please help i’ll give brainliest

Answers

Answer:

A :) Sorry if it's wrong, I'm learning this too

What is the
approximate value of x?

Answers

Answer:

There is no work shown

Step-by-step explanation:

So you find the derivative root X you'll get 1 over 2 X to the power 1 by 2 and exactly after that you write the formula for the approximation.

A mad scientist is trying to turn herself into a superhero in her lab at point B. There is an explosion and
anyone within a radius of 8 miles from the lab turns into a superhero. Unfortunately, anyone between 8 and
10 miles from the blast turns into an evil villain. If the population is evenly distributed over the total area,
are there more evil villains or more superheroes?

Answers

Answer:

superheros

Step-by-step explanation:

area of the 8 milrs- 201.06sq miles

area of 10 miles- 314.16sq miles

subtract the 210.06 from 314.16, 104.1

so, 210.06 square miles of heros, 104.1 square miles of villians

Write 3-5 sentences about the process of the Difference of squares Factoring Method

Answers

To factor a difference of squares, the following steps are undertaken: Check if the terms have the greatest common factor (GCF) and factor it out. Remember to include the GCF in your final answer. Determine the numbers that will produce the same results and apply the formula: a2– b2 = (a + b) (a – b) or (a – b) (a + b)

Write the equation of the line in slope-intercept form passing through the points (-4,2) and (1,12)

Answers

Answer:

y = 2x + 10

Step-by-step explanation:

Find the slope:

12 - 2 / 1 - (-4)

10 / 5 = 2

Write in point-slope form:

y - 12 = 2(x - 1)

rearrange:

y - 12 = 2x - 2

y = 2x + 10

What is the slope of the line ??

Answers

Answer:

slope = 2

Step-by-step explanation:

slope is...

rise/run

this is rising by 2 and going to the right by 1

2/1=2

Algebra 2
Please help!
Will give brainliest if it’s correct!

Answers

I’m not sure but I think it’s either c or d
The answer to your question is C

which is grater .856 or .8561

Answers

Answer: .8561

Step-by-step explanation: If you make them the same number by adding a 0 to .856 it would look like

.8561

.8560

Answer:

I think it would be .856

Step-by-step explanation:

0.5 is greater than 0.05. There are many ways to deduce this:

The more the # of zeroes after the decimal point the smaller the number is. Suppose there are x number of extra zeroes after the decimal point in number a than number b. Then, b is 10^x times larger than a.

Multiply both numbers by 100. we can see 0.5*100 (=50) > 0.05*100 (=5)

Fractionalize both numbers, we get 0.5=(5/10) but 0.05=(5/100). This makes 0.05<0.5

Thanks for reading. Hope this helps. And maybe can i have brainliest?

Doreen bought 2 liters of lemonade. How many millimeters of lemonade did Doreen buy? ​

Answers

Answer:

2000 milliliters, because 1 liter equals 1000 milliliters, so 2 equals 2000! hope this helped!

(BRAINLIEST!!) Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
The polygons are similar, but not necessarily drawn to scale. Find the value of x.


question 3/4

Answers

Answer:

i am having trouble with that too

Step-by-step explanation:

Answer:

Since we are told that the two given polygons are said to  similar, their corresponding side lengths are proportional to each other.

so to solve

(x - 3)/2.5 = 16/4

(x - 3)/2.5 = 4

Multiply both sides by 2.5

x - 3 = 4 × 2.5

x - 3 = 10

Add 3 to both sides

x = 10 + 3

x = 13

So the value of x is 13.

hope this helps

A waffle cone has a volume of 31.254 cubic centimeters and a radius of
2.5 centimeters. What is the approximate height of the cone?

Answers

Answer:

4.78 cm

Step-by-step explanation:

The formula for the volume of a cone of radius r and height h is

V = (1/3)πr²h.  Here, V = 31.254 cm³ and r = 2.5 cm.  

We begin by solving V = (1/3)πr²h for the unknown height, h:

         31.254 cm³              3(31.254 cm³)            93.762 cm³

h = ------------------------  =  --------------------------  =  --------------------  ≈  4.78 cm

            (1/3)πr²                       π(2.5 cm)²               19.635 cm²

Al principio Eduardo y Adrián tenían el mismo número de dulces. Eduardo le dio a Adrián la mitad de los dulces que tenía. Después, Adrián le dio a Eduardo la mitad de los dulces que tenía él en ese momento, así que a Adrián le quedaron 12 dulces. ¿Cuántos dulces tenía Eduardo al final? *

Answers

Answer:

Al final, Eduardo tenía 20 dulces.

Step-by-step explanation:

Dado que al principio Eduardo y Adrián tenían el mismo número de dulces, y Eduardo le dio a Adrián la mitad de los dulces que tenía, y después, Adrián le dio a Eduardo la mitad de los dulces que tenía él en ese momento, así que a Adrián le quedaron 12 dulces, para determinar cuántos dulces tenía Eduardo al final se debe realizar el siguiente cálculo:

Eduardo 1X = Adrián 1X

Eduardo 0.5X = Adrián 1.5X

Eduardo 1.25X = Adrián 0.75X

0.75 X = 12

X = 12 / 0.75

X = 16

1.25 X = 16 x 1.25 = 20

Así, al final, Eduardo tenía 20 dulces.

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