What is the x-value of the solution to this system of equations?
X = 2y-3
4X+9y=-63

A :60/17
B : -9
C : -3
D : -17/4

Answers

Answer 1
1) Plug in for x into the equation
4(2y-3)+9y=-63
8y-12+9y
17y-12=-63
y=-3

2) Plug in for y into the equation
4x+9(-3)=-63
4x-27=-63
+27. +27
4x=-36
-36/4= -9
x=-9


(-9,-3)
Now check by pluging in for x and y and see if the equation is true.
4(-9)+9(-3)
-36 + -27= -63

Related Questions

A loan of $4,000 was repaid at the end of 10 months with a check for $4,270. What annual rate
of interest was charged?
A.0.1067%
B.10.675%
C.1067.5%
D.128.6%
NO LINKS !! ILL BRAINLIEST !!!

Answers

The rate of interest charged seems to be 8.10%

What is the total surface area of a regular heptagonal pyramid with a base side length of 7 inches and a slant height of 16 inches.

Answers

Answer: Right Regular Pyramid Surface Area = (½ * Perimeter of Base * Slant Height)

Perimeter of Base = 16 inches

Right Regular Pyramid Surface Area = (½ * 16 * 7)

= 56 square inches

Step-by-step explanation: hope this helped

ANSWER QUICK PLSS!!!
Write congruence statements comparing the corresponding parts in the congruent triangles shown below.


a.

congruent; a reflection followed by translation


b.

congruent; a rotation followed by a reflection


c.

congruent; a reflection followed by another reflection


d.

not congruent

Answers

The correct answer is letter C

Help???? I can’t figure this out

Answers

Answer:

a. 1/Y

Step-by-step explanation:

sin=opposite/hypotenuse

sin t = 1/Y

City A and City B are 540 miles apart on a map. The scale on the map is 1inch:60 miles. How many inches apart on the map should City A and City B measure. Explain how you would solve this problem. What would the final answer be?

Answers

Answer: 9 inch

Step-by-step explanation:

Given

Distance between city A and city B is 540 miles

Scale on the map is 1 inch: 60 miles i.e. 1 inch on the map is equivalent to 60 miles in the real situation

suppose the distance between city A and B on the map is x

[tex]\therefore \dfrac{1}{60}=\dfrac{x}{540}\\\\\Rightarrow x=\dfrac{540}{60}=9\ in.[/tex]

Therefore, the distance between city A and B is 9 in.

Use this picture to name one pair of ALTERNATE EXTERIOR angles: *

Answers

Answer:

angle 4 is congruent to angle 7

angle 8 is congruent to angle 3

angle 2 is congruent to angle 5

angle 1  is congruent to angle 6

Step-by-step explanation:

alternate exterior angles are congruent, which means identical

Which is other endpoint of line segment with one endpoint at (1,3) and midpoint (3,5)

Answers

Answer:(9,3)

Step-by-step explanation:

Please help me with the right Awnser

Answers

Answer:

40 m2

Step-by-step explanation:

96m² is your Answer:

Solution given:

base[b]=12m

height[h]=8m

we have

Area of parallelogram=b×h=12×8=96m²

Find the slope of the line through the points (10,-6) and (-1,8)

Answers

Answer:

m=-14/11

Step-by-step explanation:

To find the slope use the formula: y2-y1/x2-x1

(8--16)/(-1-10)

14/-11

=-14/11

Which one doesn’t belong?
Come up with one reason for at least 3 different boxes

Answers

Answer:

I think box #1 doesnt't belong because it say spend $100 and get $10 off

Step-by-step explanation:

Practice Triangle Ratios (Sides) Find the value of c. Round to the nearest tenth!

Answers

Answer:

30.6688

Step-by-step explanation:

We usually use the formula SOHCAHTOA meaning Sine = opposite side/hypotenuse Cosine = opposite side /hypotenuse then Tangent = Opposite side/Adjacent side. We then say Tan61°= x/17 to get the height as 30.6688 PS/ Hypotenuse is the slanting side of the triangle

Seamus has 9feet of fabric if his brother has one foot more than Seamus how many inches of fabric does Seamus brother have?

Answers

Answer: Seamus’s brother has 120 inches.

Graph the points (0, -2), (4, 0) and (2, 0). If you want to create a parallelogram, which of the following points should be used for the fourth point?
(-1, 0)
(4, 4)
(2, -2)
(-4, 0)

Answers

Answer:

Try using GeoGebra it can help you!

Step-by-step explanation:

Answer:

the answer is (2,-2)

Step-by-step explanation: i just took the test

In a game, Ben’s score was 3 times Sam’s score. Together they scored 80 points. Find their scores.

Answers

Answer:

PROBABLY ABOUT 27 OR 26.6666666667

Answer:

Ben's Score = 60

Sam's Score = 20

Step-by-step explanation:

60 + 20 = 80

I really don't know how to explain this.

What is the area of a circle with a radius of 3 cm

Answers

Answer:

Hey mate......

Step-by-step explanation:

This is ur answer......

A ≈ 28.27cm²

Hope it helps!

Mark me brainliest pls......

Follow me! :)

Answer:

28.26

Step-by-step explanation:

Area of a circle:

A = πr²

A = 3.14(3²)

A = 3.14(9)

A = 28.26

if the sum of roots of the quadratic equation x^(2)-3kx-(k+2)=0 is equal to the product of roots,find k

Answers

Answer:

1/2

Step-by-step explanation:

quadratic equation is ax²+bx+c=0

Products of roots is c/a

Sum of roots is -b/a

On comparing the above equation with general equation we have

a=1

b=-(3k)

c=-(k+2)

Now it is given that sum of roots and product of roots is equal

So,

-b/a=c/a

-b=c

-[-(3k)]=-(k+2)

3k=-k-2

3k+k=-2

4k=-2

k=-1/2

Ayuden porfa . Determine 4 ala potencia x + 4 la potencia -x si se sabe que 2 ala potencia x + 2 ala pontecia -x es igual a 3

Answers

Answer:

4ˣ + 4⁻ˣ es igual a 7

Step-by-step explanation:

4ˣ + 4⁻ˣ

Dónde;

2ˣ + 2⁻ˣ = 3

Nosotras tenemos

[tex]2^x + \dfrac{1}{2^x} = 3[/tex]

[tex]2^{2\cdot x} +1 = 3 \cdot 2^x[/tex]

[tex]2^{2\cdot x} - 3 \cdot 2^x +1 = 0[/tex]

Deje que 'a' represente 2ˣ, tenemos;

a² - 3·a + 1 = 0

a = (3 ± √(3² - 4 × 1 × 1))/2 = (3 ± √5)/2

∴ a = 2ˣ = (3 ± √5)/2

((3 ± √5)/2)^2 - 3×(3 ± √5)/2 + 1

x = ln(3 ± √5)/2/(ln(2))

4ˣ + 4⁻ˣ = 4^(ln((3 ± √5)/2)/(ln(2))) + 4^(-(ln((3 ± √5)/2)/(ln(2)))) = 7

∴ 4ˣ + 4⁻ˣ = 7.

Find the surface area of each figure. Round to the hundredths place when necessary.​

Answers

Answer:

SA = 997.88 mm²

Step-by-step explanation:

height² = 20.5² - 13.3² = 420.25 - 176.89 = 243.36

height = √243.36 = 15.6

SA = (16 x 13.3) + (16 x 20.5) + (16 x 15.6) + (0.5 x 2 x 13.3 x 15.6)

SA = 212.8 + 328 + 249.6 + 207.48 = 997.88 mm²

Evaluate the expression when a = 3.

2a =

Answers

Answer:

6

Step-by-step explanation:

replace a by 3

when a=3

2(3)=6

Mihn invested $1,479.81 last year. What is the place value of the 8 in 1,479.81?

thousands
tens
tenths
thousandths

Answers

It’s the tenths
Hope it’s right
I think the answer is tenth and the reason why is because

Can Someone Help me, pls?

Answers

Answer:

6.25 <7

Step-by-step explanation:

Answer:

(1) [tex]x\leq 4[/tex]

(2) [tex]x\geq 4[/tex]

Step-by-step explanation:

[tex]\frac{1}{4}x + 6\leq 7\\(4) \frac{1}{4}x + 6\leq 7(4)\\x+24\leq 28\\ - 24 -24\\x\leq 4[/tex]                [tex]-5x-24\leq -44\\+24 +24\\-5x\leq -20\\\frac{-5x\leq -20}{-5} \\x\geq 4[/tex]

Find the volume of a pyramid with a square base, where the perimeter of the base is 8.6 cm and the height of the pyramid is 8.1 cm. Round your answer to the nearest tenth of a cubic centimeter.

Answers

Answer:  12.5 CC

Step-by-step explanation:

V=1/3Bh where B is the area of the base and h is the height

The perimeter of the square base is 8.6 so each side is 2.15 and the area of the base is (2.15)^2 or 4.6225

V=1/3(4.6225)(8.1)=12.5cc

Question 7
Which expression is equivalent to the expression shown?
10 x 40
45
104 x 4
15
9
9
40
104 x 45

Answers

Answer:

10^4x 4^5 hope that helps you out

What’s the answer it’s due in 15 mins

Answers

attach a picture? i don’t see anything

Answer:

Well Ima need the question buddy

Step-by-step explanation:

After all shrek can’t answer a question without a question.

Can someone please help me with math.

Answers

2) is C 7$ because 43- 5(3)=28
28/4=7

whats an equation that uses all numbers 1-10

Answers

Answer:

linear equations

Step-by-step explanation:

linear inequalities

Answer:

natural numbers.ok

hope this helps you ☺️☺️

The ratio of the length to the width to the height of an open rectangular tank is 10: 5: 8. The height is 18 feet longer than the width. What is the volume of the tank

Answers

Answer:

hi

Step-by-step explanation:

how are you

Answer:  A: L: W: H = 10: 5: 8

Step-by-step explanation:  The height of the tank is 18 feet longer than the width

H = 8 parts, W = 5 parts => 8 – 5 parts = 18 feet i.e. 3 parts = 18, 1 part = 6 feet

Hence, L = 10 * 6 = 60 feet

W = 5 * 6 = 30 feet

H = 8 * 6 = 48 feet

Volume = 60 * 30 * 48 = 86400 ft³

Surface Area = 2 * (30 * 60 + 48 * 60 + 30 * 48) =12240 ft²

Solve the system of equations by substitution. * -8x + 2y = 4 y = 4x + 2 ​

Answers

Answer:

Step-by-step explanation:

-8x + 2y = 4

y = 4x + 2

Put the value of y into the first equation

-8x + 2(4x + 2) = 4                 Remove the brackets

-8x + 8x + 4 = 4                    The 8xs cancel out.

4 = 4                                     But this is useless. There is no single solution

can someone help me please ?

Answers

Answer:

-5/-3

Step-by-step explanation:

first y intercept=

-5/-3

A bag contains a mixture of 300 red and 75 yellow candies. If you choose one candy at random, what is the probability that it is yellow?

Answers

Answer: A solid 4% chance of picking a yellow

brainliest plz

Step-by-step explanation: We first should combine 300 and 75 because those are the total values of the candies in the bag. After, we should divide the different candies by the total amount of them getting the numbers .8 for red and .2 for yellow. Since the question is that the yellow occurs but not the red and you can miss the bag you would want to calculate what the probability would be to have B happen but not A. The equation for that is:

(1 - P(A)) × P(B)  

where P(A)=.8 and P(B)=.2

plugging in all things it would be

(1-.8)*.2

which equals .04 or 4%

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