1. What is the solution of the system
{3x - y = 14
{4x + y = 21 ?
A (−5, 3)
B (4, −2)
C (5, 1)

Answers

Answer 1

Answer:

C

Step-by-step explanation:

3x-y=14

4x+y=21

add

7x=35

x=35/7=5

4×5+y=21

y=21-20=1

so (5,1 ) is the solution.


Related Questions

given the function below, find p(x-1) p(x)=x^2-7x

Answers

Answer:

p=x−7

Step-by-step explanation:

Let's solve for p.

px=x^2−7x

Step 1: Divide both sides by x.

px/x=x^2−7x/p

=x−7

Answer:

p=x−7

( I hope this was helpful) >;D

The value of p (x-1) is;

⇒ [tex]p(x - 1) = x^{2} -9x+8[/tex]

Here,

The function is given as;

[tex]p(x) = x^{2} -7x[/tex]

We have to find the value of p (x - 1).

What are the polynomials function?

A function that involves only non negative integer powers is called polynomial of function.

Now,

The function is given as;

[tex]p(x) = x^{2} -7x[/tex]

To find the value of p (x- 1), we can substitute x-1 in place of x, we get;

[tex]p(x-1) = (x-1)^2- 7(x-1)\\\p(x-1) = x^{2} -2x+1-7x+7\\\\\p(x-1) =x^{2} -9x+8[/tex]

Therefore, The value of p (x-1) is;

⇒ [tex]p(x - 1) = x^{2} -9x+8[/tex]

Learn more about the polynomial function visit:

https://brainly.com/question/1600696

#SPJ2

Mr. Enloe uses a 3-foot-long piece of wood to build a square frame. Mr. Enloe cuts the wood in 4
pieces of equal length. What is the length, in inches, of each piece of wood?
12 inches
9 inches
36 inches
13.5 inches

Answers

Answer:

it 12 inches u can thank me later

Answer:

9 inches

Step-by-step explanation:

First we divide 3 by 4, which equals to 0.75. Since 1 foot is equal to 12 inches 0.75x12 is equal to 9.

PLEASE HELP

Determine whether the lines y =- 1/7x-1 and y=-1/7x-5 are parallel, perpendicular or neither
A Parallel
C. Neither
B. Perpendicular

Answers

Answer:

I think so its neither

Step-by-step explanation:

I dont know

Which comparison of the two equations is accurate?
Equation A: Sqrt x^2 + 3x-6 - Sqrt X+2
Equation B: Sqrt x^2 + 3x-6 = Sqrt x+2
O Both equations have different solutions because the square root of a number is not the same as the cube root of a
number
O Both equations result in different equations after eliminating the radicals, so they have the different solutions.
O Both equations have the same potential solutions, but equation A might have extraneous solutions.
Both equations have the same potential solutions, but equation B might have extraneous solutions.

Answers

Answer: C, Both equations have the same potential solutions, but equation A might have extraneous solutions.

Step-by-step explanation:

Answer:

Both equations have the same potential solutions, but equation A might have extraneous solutions.

Step-by-step explanation:

EDGE

find the volume of the solid figure​

Answers

Answer:

Volume= Length × Width × Height

It is one more than the sum of the first three natural numbers, followed by the 24th letter of the alphabet. Please help

Answers

Answer:

The set of natural numbers is the set of all positive integers, then this set is:

{1, 2, 3, ...}

and the 24th letter of the alphabet is x

Now we want to write the expression given in the sentence "It is one more than the sum of the first three natural numbers, followed by the 24th letter of the alphabet"

We can "break" this in parts, so it is easier to understand.

Then:

"...the sum of the first 3 natural numbers..."

is:

1 + 2 + 3

Then:

"...the sum of the first 3 natural numbers, followed by the 24th letter of the alphabet"

This can be written as:

(1 + 2 + 3) + x

Now we can analyze the complete sentence:

"It is one more than the sum of the first three natural numbers, followed by the 24th letter of the alphabet"

This is equal to the expression we found above plus one, then we can write this as:

[(1 + 2 + 3) + x] + 1

[6 + x] + 1

6 + x + 1

7 + x

A company made 700000 profit last year. It says this was 12percent more than the year before. What was the profit made the year before

Answers

Answer:

784000

Step-by-step explanation:

Given data

Profit =  700000

Let us begin by finding what 12% of  700000 is

=12/100* 700000

=0.12* 700000

=84000

Hence the profit made last years was

=84000+700000

=784000

solve for sk and angle PQR.






Answers

Answer:

arc SK = 144°

∠PQR = 60°

Step-by-step explanation:

∠M = 1/2 (arc SK - arc NL)

37° = 1/2 (arc SK - 70°)

arc SK = 2*37° + 70° = 144°

∠PQR = 1/2 (small arc PQ) = 1/2 (360° - 240°) = 60°

please help taking a test!!
which describes the function graphed below?

Answers

Answer: D

Step-by-step explanation: Y starts at -4 and ends at 4

Answer:

D

Step-by-step explanation:

math :)

The perimeter of the triangle below is 42 units. What is the value of x? A. 18 B. 14 C. 30 D. 10

Answers

Answer:

x=10

Step-by-step explanation:

4y-6 = 2y +8
I need helppp

Answers

the answer would be 3.5

Answer:

4y - 6 =2y + 8

4y - 2y = 8 + 6

2y = 14

y = 14 / 2

y = 7

which graph represents the function f(x) = 3x-2/x-2?

Answers

Answer:

solve for x and that should help match the equation to the correct grapgh, hope this help!

Step-by-step explanation:

A town low temperature for January was -8 Fahrenheit. The difference between The town high temperature and low temperature for January was 25. What was the town high temperature .In degrees Fahrenheit ,for January

Answers

Answer: 17°F

Step-by-step explanation:

Let the the town high temperature .In degrees Fahrenheit ,for January be represented by x

Since the town had low temperature for January was -8 Fahrenheit and the difference between the town high temperature and low temperature for January was 25. Then, the high temperature will be:

x - (-8) = 25

x + 8 = 25

x = 25 - 8

x = 17°F

CT fffgghjkjhhgggggg​

Answers

Step-by-step explanation:

yhcugchvhv hyddd wasppp

Answer:

iuytfjgfgjhgyjuhguyhgvgfcfgcjhgvyhjnbm

Step-by-step explanation:

Step- by- step explanation

A metallic sphere is immersed in water in a cylindrical container causing a rise in the level of water by 7.5cm if the cylinder has a base radius of 7cm find the radius of the sphere to 2 decimal places

Answers

Answer:

6.51 cm

Step-by-step explanation:

Since the sphere causes the water level in the cylindrical container to rise and thus increase by its own volume, the volume of the sphere is V = 4πr³/3 where r = radius of sphere. The volume rise of the container is thus    V' = πR²h where R = radius of base of cylinder = 7 cm and h = height of water level = 7.5 cm.

Since V = V',

4πr³/3 = πR²h

dividing through by π, we have

4r³/3 = R²h

multiplying both sides by 3/4, we have

r³ = 3R²h/4

taking cube-root of both sides, we have

r = ∛(3R²h/4)

Substituting the values of the variables into the equation, we have

r = ∛(3(7 cm)² × 7.5 cm/4)

r = ∛(3 × 49 cm² × 7.5 cm/4)

r = ∛(1102.5cm³/4)

r = ∛(275.625 cm³)

r = 6.508 cm

r ≅ 6.51 cm to 2 decimal places

{will give brainiest}
In quadrilateral ABCD, m∠A = 8x-65,
m∠B = 6x-53,
M ∠ C = x+ 121,
and m ∠ D = 6x+21.

a. Find m∠A, m∠B, M ∠ C , and m ∠ D .

b. Classify quadrilateral ABCD as a kite, trapezoid, or isosceles trapezoid. Justify
your answer.

c. What is true of the side lengths?

Answers

Answer:

Sum of interior angles of a quadrilateral is 360°

Find x first:

m∠A + m∠B + m∠C + m∠D = 360°8x - 65 + 6x - 53 + x + 121 + 6x + 21 = 36021x + 24 = 36021x = 336x = 336/21x = 16

Find angle measures:

m∠A = 8*16 - 65 = 63°m∠B = 6*16 - 53 = 43°m∠C = 16 + 121 = 137°m∠D = 6*16 + 21 = 117°

Each angle has a different measure, it means the sides are all different.

The quadrilateral ABCD is likely a trapezoid.

Answer:

360°.....................

2. A coin purse contains d dimes and q quarters. There are 20 coins in the purse, and the total value of the coins is $4.25. Which system of equations represents this situation?
A {d + q = 4.25
{0.1d + 0.25q = 20

B {d + q = 20
{0.1d + 0.25q = 4.25

C {d + q = 20
{d + q = 4.25

Answers

B. D represents the amount of dimes and q represents the amount of quarters so that equals 20 coins total. 0.25q is the amount of quarters multiples by their cost, when added to 0.1d it equals 4.25.

Intrigue and drama are standard features of her writing, her next book should keep readers on edge.

Answers

Answer:

The complete sentence is:

Walnuts stay fresh longer in the refrigerator or freezer.

Step-by-step explanation:

A complete sentence is a sentence that displays a complete idea. It comprises of a subject and a predicate that includes verb too.  

From the given two sentences, the complete sentence is the second sentence. 'Walnuts' is the subject and 'stay fresh longer in the refrigerator or freezer' is the predicate. A complete idea about the freshness of the walnuts have been stated in the sentence. On the other hand, the first sentence is a run-on sentence. In such a sentence, two sentences are merged together. This is done by adding the punctuation mark or coordinating conjunction to merge the sentences.

Answer:

Run-on sentence

Step-by-step explanation:

This figure consists of a rectangle and a semicircle.



What is the AREA of the figure?

Question 9 options:

46.28


65.12


125.12


28

Answers

Correct answer is A, 46.28ft

Answer:

46.28

Step-by-step explanation:

did the test

HELP PLS


What is the volume of this container?



1,564


10 in.
4 in.
4 in.
1,468
2 in.
10 in.
1,500
15 in.
1,532

Answers

:::1,468:::

Explanation:
You have to find the volume of the rectangular prism (including the small part that was removed)
Formula- V=l•w•h
V=10•10•15
V=1,500
Now find the volume of the small removed rectangle
V=4•4•2
V= 32
Finally subtract the 2 volumes
1,500-32=1,468

30 + a = 40
40 + b = 30
c - 3 = 8
d - 3 = 8
plz answer.

Answers

Answer:

A= 10

B= -10

C and D both = 11

Complete the pattern: 2×4=8 20×4=80 200×4=800 2000×4=​

Answers

answer: 8000
just add another 0

PLEASE HELP (question is in picture)

Answers

Answer:

4*3=12

12*4=

3*3=9

9*2=18

18+48=66

Step-by-step explanation:

Select the expressions that are equivalent to Oy + 3y.
10y + 3y
y + 12
12
y
13y - y

Answers

Answer:

None

Step-by-step explanation:

0y+3y=3y.

10+3y=13y, 13y is not equal to 3y

y+12=12y, 12y is not equal to 12y

12 is not equal to 3y

y is not equal to 3y

13y-y=12y which is not equal to 3y.

If you made a typo, put it in comment.

please help what is x?

Answers

Answer:

17.5

Step-by-step explanation:

Answer:

17.5

Step-by-step explanation:

Using Pythagoras theorem

X² = 15² + 9²

X² = 225 + 81

X² = 306

Take the square root of both sides

X = √306

X = 17.5

Write two numbers that multiply to the value on top and add to the value on the bottom.

Answers

Answer: 10 x -9 10 + -9

Step-by-step explanation:

find the value of x. need quickly plz help​

Answers

Answer:

60°

Step-by-step explanation:

I think, should be correct all sides = 180

180/3 = 60

Answer:

x = 60

Step-by-step explanation:

This is an equilateral triangle so all angles are 60 degrees

Find the area of a circle with a radius 4 mm. Use the value 3.14 for π, and do not round your answer. Be sure to include the correct unit in your answer.

Answers

Answer:

A=50.24 mm²

Step-by-step explanation:

A=3.14×4²

A=3.14×16

A=50.24 mm²

Answer: 50.24

Explanation:
Formula is: A = (pi r squared)
So you multiply 16 times 3.14

Find the interest on a loan of $5000 for two years at 9%

Answers

Answer:

1k

Step-by-step explanation:

1,000 hhhhhhhhhhhhhhjj

Can someone help me with Tuesday’s question??

Answers

Answer:

B

Step-by-step explanation:

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