#4) Solve the following systems of equations by any method.

x - y = 7

3x + y = 1


A (2,-5)
B (3,-4)
C (2,5)
D (-4,3)​

Answers

Answer 1
A (2,-5) i used the substitution method

Related Questions

Is 0.3 the multiplicative inverse of 3 1/3? Why or why not?

Chapter : Rational Numbers ​

Answers

Answer:

3 1/3 = 10/3

0.3 = 3/10

a * 1/a =1

then 1/a is multiplicative inverse of a

0.3* 3 1/3 = 3/10 * 10/3 =1

0.3 is multiplicative inverse of 3 1/3

Step-by-step explanation:

Answer:

3 1/3 = 10/3

10.3 = 0.3 = 3 1/3

x * 1/x = 1

∴ yes, the multiplicative reverse of 3 1/3 is 0.3

hope this answer helps you.....

find the missing length!!!!!

Answers

Answer:

2x^2+4x

HOPE THIS HELPS

-Todo <3

Step-by-step explanation:

9x^2+2x

2x^2+4x

(if you would like an explanation let me know :D)

Joanna went school supply shopping. She spent $21.45 on notebooks and pencils. Notebooks cost $1.97 each and pencils cost $1.16 each. She bought a total of 15 notebooks and pencils. How many of each did she buy?
A.
5 notebooks; 10 pencils
B.
3 notebooks; 12 pencils
C.
8 notebooks; 7 pencils
D.
10 notebooks; 5 pencils

Answers

I’m sure it’s A :DDD

Question 5 options:
The radius of a circle is 18.4 inches. The circle's circumference is about ___ inches.

Use 3.14 for ​.

my answer was 115.61, please check for me?

Answers

Yes your answer is correct

Guys pls help me the question and answere choices are in the image pls help

Answers

Answer:

Zoe is wrong because she added all the dimensions instead of multiplying all the dimensions

Step-by-step explanation:

to find the volume of a rectangular prism the formula is: Multiply its 3 dimensions: length x width x height. The volume is expressed in cubic units.

if you answer this question i will give brainliest

Answers

Answer:

the line plot in the bottom right corner

Step-by-step explanation:

Answer:

D is the correct graph.

Step-by-step explanation:

First you put the entries in ascending order, because that's how the line plot needs to be ordered.

1/4, 3/8, 1/2, 3/4, 7/8, 1, 1 1/4

So right there, you can rule out A.

You can rule out C because 1/4 does not occur 5 times in the data set.

B is incorrect because 3/8 isn't on the line plot at all.

Please let me know if you have questions.

10)
Which expression represents how many years are in x months?
A
)
12x
B)
12 + x
12
12
D)
х

Answers

Answer:

C . x/12

Step-by-step explanation:

Henry can write 5 pages of his novel in 4 hours. At this rate, how many pages can Henry write in 8 hours?

Answers

Answer:

Henry can write 10 pages in 8 hours.

Step-by-step explanation:

Our unit rate (number of pages in a given number of hours) is

5 pages

--------------

   4 hrs

It is not necessary to perform the indicated division.  Just multiply this unit rate by '8 hours':

5 pages

-------------- * 8 hrs = 10 pages

   4 hrs

Henry can write 10 pages in 8 hours.

10 pages if he can write 5 pages in 4 hours then you double that for 8 hours

Hurry please and show your work! Thanks! Useless answers will be reported!
Veterinary doctors marked 30 deer and released them. Later on, they counted 150 deer,
12 of which had marks. To the nearest whole number, what is the best estimate for the
deer population?

Answers

Answer:

375

Step-by-step explanation:

12/150 is 0.08, which is 8%

this mean 8 perfect of the population were marked

8 percent is 30 deers

30/0.08=375

Javon has a credit card with a $1,583 balance. His interest
rate is 8.8%. If he does not pay for 3 years, how much
Interest does he owe?

Answers

I believe the answer is $417.91

3 cm
5 cm
6 cm
What is the surface area of the solid above?
A. 108 cm2
B. 126 cm2
C. 14 cm2
D. 96 cm2

Answers

Answer:

check my explanation

Step-by-step explanation:

yes it is c.

by adding the ones on screen

it is option C

Write the equation for each line in slope-intercept form. Then identify the slope and the y-intercept.
Please help if you can and please don't put any links as an "answer", it's already happened to me 3 times already.

Answers

1)
y=-4x+7
-4
7

2)
y=2/3x-3
2/3
-3

3)
y=5x-3/2
5
-3/2

4)
y=-1/2x+4
-1/2
4

I hope this helps :)
Lmk if you need any explanations

Answer:

1.

Equation: y = -4x + 7

Slope: -4

y-intercept = 7

2.

Equation: y = 2/3x - 3

Slope: 2/3

y - intercept: -3

3.

Equation: y = 5/4x - 3/2

Slope: 5/4

y - intercept: -3/2

4.

Equation: y = -1/2x + 4

Slope: -1/2x

y - intercept: 4

What is 2/3 – (-2/3)?
A. -4/3
B. 4/3
C. 0
D. 2/3
Answer is B

Answers

Answer:

answer b

Step-by-step explanation:

lol  points ig


Find the value of X.

Answers

Answer:

x=5

Step-by-step explanation:

13x+3= 15x-7

2x=10

x=5

x is equal to 5
x = 5

a graph.
Write a function to represent the table and give the average rate of change over
interval 0 8.
х
-1
0
1
2
3
у
10
12
14
16
18
9.
х
-2
-1
0
1
2
y
4
2
1
0.5
0.25

Answers

Answer:

3*3+5+6

Step-by-step explanation:

i hope its correct

A counselor plans transportation for 120 students for a field trip using buses and vans.
• Exactly 120 students can fit in 2 buses and 2 vans.
Exactly 120 students can also fit in 1 bus and 6 vans.
.
Which statement is true?

Answers

Answer:

Each bus can fit

48

students, while each van can fit

12

students.

Step-by-step explanation:

PLEASE HELPPPP
Find the area of the shaded region of the square, with side length 2x - 3, if each of
the ovals has an area of x – 5 square inches.

Answers

Answer:

4x^2 - 14x + 19

Step-by-step explanation:  

A = LW

A = (2x-3) (2x-3)

4x^2 - 6x - 6x + 9

Combine like terms:

4x^2 - 12x + 9

-2(x - 5) (for both ovals)

(4x^2 - 12x + 9) -2(x - 5)

4x^2 - 12x + 9 - 2x + 10

Group then combine like terms:

4x^2 - 12x - 2x + 10 + 9

4x^2 - 14x + 19

Sorry for being 10 days late but here is the answer for anybody that needs this! :D

( Click on the photo to see fully)

How does this create two “congruent” right angle triangles when i thought it had to be similar in 3 ways to be congruent

Answers

Though these segments aren't marked congruent in the diagram, the two lines inside the circle making up the bases of the triangles are congruent as all radii are congruent. So the triangles are congruent by SAS.

Manuel bought 9 pounds of apples.
He has eaten 3
4 of a pound so far and has
$15 worth of apples left. Write and solve an
equation to find the cost of the apples per
pound to the nearest dollar. How much did
the apples cost per pound?

Answers

Answer:

1) Since Manuel bought 9 pounds and ate 3/4 of 1 pound, he has 8.25 pounds left   (9  - 0.75  = 8.25)

 2) Let's call "x" the cost of 1 pound of apples

 3) (8.25)*(x) = $15

 4) x = $1.81818    rounded to the nearest dollar is $2 / pound

What is the amplitude of the function?



2.
O
3
O
4
5

Answers

Answer: 3

Step-by-step explanation:

The weight of oranges growing in an orchard is normally distributed with a mean
weight of 7 oz. and a standard deviation of 0.5 oz. Using the empirical rule, what
percentage of the oranges from the orchard weigh between 6.5 oz. and 7.5 oz.?

Answers

Answer:

The correct anser for delta math is 68%

Step-by-step explanation:

I gave up on delta math

Help ASAP! Find the measure of Arc AP.

Answers

Answer:

57

Step-by-step explanation:

<=1/2(AP-BN)

12=1/2(x-33)

(2) 12=1/2(x-33) (2)

24=x-33     24+33

57=x

57=AP

Simplify the ratio 300m:2km

Answers

Answer:

3m:20m

Step-by-step explanation:

2km to m = 2000

300:2000

(divide both sides by 100)

300/100=3

2000/100=20

3:20

Answer:

3 : 20

Step-by-step explanation:

2km = 2000

Ratio:

300 : 2000 =

150 : 1000 =

75 : 500 =

15 : 100 =

3 : 20

Quadrilateral WILDWILDW, I, L, D is inscribed in circle OOO. \overline{WI} WI start overline, W, I, end overline is a diameter of circle OOO. What is the measure of \angle D∠Dangle, D?

Answers

Answer:

135degrees

Step-by-step explanation:

Find the diagram attached.

Note that in a cyclic quadrilateral, the sum of the opposite side of the quadrilateral is 180degrres.

According to the diagram shown:

<D+<I = 180

<D+45 = 180

Subtract 45 from both sides

<D+45-45 = 180-45

<D = 180-45

<D= 135°

Hence the measure of <D is 135degrees

Answer: 135

Step-by-step explanation: khan academy

The function of fx and gx are shown on the graph Fx=x2
What is gx

Answers

Answer:

Step-by-step explanation:

g(x) =(1/4 x)²

g(x)  = 4x² will be the equation of the parabola.

What is the function?

A relationship between a group of inputs and one output is referred to as a function. In plain English, a function is an association between inputs in which each input is connected to precisely one output. A domain, codomain, or range exists for every function. Typically, f(x), where x is the input, is used to represent a function.

Given, two parabolas f(x) and g(x),

From the general equation of the parabola,

y = a(x – h)² + k or x = a(y – k)² +h.

Here (h, k) denotes the vertex.

As we can see in our case, the vertex is (0, 0)

Thus, the equation of the parabola will be

y = ax²

Since the given parabola passes through the point (1, 4)

Substitute the values,

4 = a(1)²

a = 4

therefore, the equation of the parabola g(x) will be,

g(x)  = 4x²

Learn more about function here:

https://brainly.com/question/29633660

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This is a riddle for fun What question can you never answer yes to?

Answers

Answer:

are you dead?

Step-by-step explanation:

Victor sold cupcakes and cookies yesterday. Each cupcake sold for $2.25 and each cookie sold for $0.50. At the end of the
day, Victor had sold $95.25 worth of cookies and cupcakes. If he sold 68 cupcakes and cookies combined, how many
cupcakes were sold and how many cookies were sold?

Answers

answer:number of cupcakes sold is 13  Number of cookies sold is 27  

Step-by-step explanation:

Let x represent the number of cupcakes that Victor sold.  Let y represent the number of cookies that Jane sold.  Each cupcake sold for $2.25 and each cookie sold for $0.50. At the end of the day,  This mean Victor had 2.25x 0.5y = 42.75 - - - - - - - - - -1she sold 40 cupcakes and cookies combined, it means thatx y = 40Substituting x = 40 - y into equation 1, it becomes2.25(40 - y) 0.5y = 42.7590 - 2.25y 0.5y = 42.75- 2.25y 0.5y = 42.75 - 90- 1.75y = - 47.25y = - 47.35/-1.75y = 27x = 40 - yx = 40-27 = 13

An equation is formed when two equal expressions. The number of cupcakes that Victor sold is 35, while the number of cookies that Victor sold is 33.

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Let the number of cupcakes sold be represented by x, while the number of cookies sold is represented by y.

Now, the total number of cupcakes and cookies sold combined is equal to 68. Therefore, the equation can be written as

x + y = 68

x = 68 - y

Also, Each cupcake sold for $2.25 and each cookie sold for $0.50. And the total sale that Victor made is of $95.25. Therefore, the equation can be written as,

2.25x + 0.50y = 95.25

2.25(68 - y) + 0.5y = 95.25

153 - 2.25y + 0.5y = 95.25

-2.25y + 0.5y = 95.25 - 153

1.75y = 57.75

y = 33

Now, substitute the value of x in the first equation.

x + y = 68

x + 33 = 68

x = 35

Hence, the number of cupcakes that Victor sold is 35, while the number of cookies that Victor sold is 33.

Learn more about Equation:

https://brainly.com/question/2263981

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Which statement is true???

Answers

9514 1404 393

Answer:

  B, C, E

Step-by-step explanation:

When the central angles are congruent, the corresponding triangles are congruent:

  ΔJHK ≅ ΔLHM . . . . selection E

and the base chords are congruent:

  ML ≅ JK . . . . selection B

The subtended arcs are also congruent, so adding arc LK to each will result in congruent arc measures:

  arc MLK ≅ arc LKJ . . . . selection C

Hunter has 56 chocolate bars. He wants to share them evenly with his 7 friends. How many chocolate bars will Hunter and his friends have?

Answers

Answer:

8 chocolate bars

Step-by-step explanation:

56 / 7 = 8

( / = divide)

Help! This is my math problem

Answers

Answer:

Step-by-step explanation:

The problem is that you cannot be sure that either triangle (it actually requires both of them) contain a right angle

What you have so far is SSA which is not one of the fundamental congruency triangles. In order to be certain of congruency the angle must be made up of the 2 given sides. You are certain that SAS will produce congruency. You are not so sure of  r SSA. There are proofs of this on the internet. I urge you to look into it. Though not long, following it step by step takes a lot of patience. A cup of strong coffee is a good idea.

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