Solve the system of equations.
3x+8y=15
2x-8y=10

Answers

Answer 1

Answer:

x = 5

y = 0

Step-by-step explanation:

add both equations so the y-terms are eliminated and you get:

5x = 25

x = 5

substitute 5 into 'x' in one of the equations:

3(5) + 8y = 15

15 + 8y = 15

8y = 0

y = 0


Related Questions

find the inverse equation
f(x) = 2x – 3

Answers

I will help but, what is x supposed to be?

pls i need help with the attachment its my hw

Answers

Answer:

C

Step-by-step explanation:

It has to be c by process of elimination the circle has to be filled in and on the #5 and as you can see the only one was C

Answer:

D

Step-by-step explanation:

Solving the inequality

2x + 3 ≤ 5 ( subtract 3 from both sides )

2x ≤ 2 ( divide both sides by 2 )

x ≤ 1

The required number line will have a solid circle at x = 1 and the arrow will be going left.

The only graph with these conditions is D

A cyclist travels 15 miles in 45 minutes.
What is his average speed in mph?

Answers

The cyclist’s average speed in mph is 20mph

The answer is 20 Km/hr

first : you have miles . then change it into Km .

second: 45 min to sec

finally speed is the distance per unit time

how many minutes are in three days and quarters of a day

Answers

Answer:

4680 minutes. I hope this helped and is correct!

Step-by-step explanation:

4,320 minutes are in 3 days

Use the Distributive Property and write the sum of the number as the product of the GCF.
30 + 12

Answers

Answer:

1,2,3 and 6 is the answer

What is the answer??

Answers

try 1
because translate means to directly copy something. i think.

Answer:

try 1

because translate means to directly copy something. i think.

Step-by-step explanation:

Solve algebraically: x2 − x ≥ 6.

A. x ≥ 3 and x ≥ −2
B. x ≥ 3 or x ≤ −2
C. x ≤ 3 and x ≤ −2
D. x ≤ 3 or x ≥ −2

Answers

Answer:

B. x ≥ 3 or x ≤ −2

Step-by-step explanation:

Inequalities

Solve the inequality:

[tex]x^2-x\ge 6[/tex]

Subtracting 6:

[tex]x^2-x-6\ge 0[/tex]

Factoring:

(x-3)(x+2) ≥ 0

We have a product that must be greater or equal to 0. This can only happen if:

x - 3 ≥ 0  and x + 2 ≥ 0

Or:

x - 3 ≤ 0  and  x + 2 ≤ 0

The first couple of conditions yields to:

x ≥ 3 and x ≥ -2

Which lead to the solution

x ≥ 3       [1]

The second couple of conditions yields to:

x ≤ 3 and x ≤ -2

Which lead to the solution

x ≤ -2        [2]

The final solution is [1] or [2]:

Answer:

B. x ≥ 3 or x ≤ −2

What is 56.000,000,000 in scienfic notaion?

Answers

Answer:

56,000 = 5.6 x 10^**4

Step-by-step explanation:

56,000 = 56 x 10,000

Inserting decimal:

56 x 1,000 = 5.6 x 10,000

Answer:

56,000 = 5.6 x 10^**4

( btw ^** means exponent )

If a circle has a diameter of 24 inches, which expression gives its area in
square inches?

A. 12^2 • pi
B. 12 • pi
C. 24 • pi
D. 24^2 • pi

Answers

A= pi x r^2

radius is diameter / 2
r= 12
so your answer is
A=pi(12)^2

find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each function.​

Answers

Answer:

Axis of symmetry is 0

vertex is 1

Step-by-step explanation:

this is due at 11:59 pm.... someone help quick please

Answers

Answer:

62 square units

Step-by-step explanation:

Lateral rectangles area: 2 (3 * 5) + 2 (2 * 5)  = 50 square units

Rectangular bases: 2 (3 * 2) = 12 square units

Total surface area: 62 square units

-9.x+ 16x – 10x – 4y

Answers

if you simplify this it is -3x-4y, if you factor it is -(3x+4y)

SOLUTION
5 Salvador drives 6.5 miles to his aunt's house. For every mile Salvador drives, the
amount of gas in the car's gas tank changes by -0.04 gallon. What is the total
change in the gallons of gas in the car's tank? Show your work.
SOLUTION

Answers

Answer:

-0.26 gallon

Step-by-step explanation:

-0.04x 6.5=0.26

3-2(3x+1)=19
How would I solve this equation?​

Answers

Step-by-step explanation:

3-2(3x+1)=19

[tex]3 - 6x - 2 = 19 \\ 1 - 6x = 19 \\ - 6x = 19 - 1 \\ - 6x = 18 \\ x = - 3[/tex]

plz answer for 35 points​

Answers

The answer is b I think hope this helps

Answer:

The answer is B.

Step-by-step explanation:

Need help rn please!
Kaia’s mom is having triplets each baby could be either male or female what outcome would be included in the compound event more than one female.
A. MFM
B. FMM
C. FFM
D. MMF

Answers

FFM would be included in the compound event with more than one female.

Option (C) is the correct answer.

What is compound event?

"A compound event is is an event which involves the probability of two or more outcomes."

What is outcome?

"In probability, an outcome of an experiment are the all possible results. "

For given question,

Sample space:

S = {MMM, MMF, MFM, MFF, FMM, FMF, FFM, FFF}

Kaia’s mom is having triplets each baby could be either male or female.

We need to find the outcome that would be included more than one female.

So, the possible outcomes are: {MFF, FMF, FFM, FFF}

From given option FFM is the correct answer.

Therefore, option (C) is the correct answer.

Learn more about compound event here:

https://brainly.com/question/2506202

#SPJ2

Which of the following are divisible by both 2 and 3?
(Choose 2)

A. 456
B. 765
C. 1262
D. 1548

Answers

A and D
456/2=228
456/3=152
1548/2=774
1548/3=516
hope this helps!

Answer:

Step-by-step explanation:

Solve for x.

PLease need help

Answers

Answer:

x=7

Step-by-step explanation:

22x-4=7x-4+105

cancel both 4 out

22x=7x+105

15x=105

x=7

Do 4x and 15+x have the same value when x is 5?
Are 4x and 15+x equivalent expressions? Explain your reasoning.

Answers

Answer:

1. yes 2. no

Step-by-step explanation:

Hi there!

When x is equal to 5, 4x and 15+x have the same value because 4*5= 20 and 15+5 = 20.

4x and 15+x are not equivalent expressions because they cannot be simplified to create the same expression nor will they produce the same answer every time.

I hope this helps!

Find the quotient 7/9 divide 5/6

Answers

Answer:

7/9 ÷ 5/6 = 42/45 as simplified as 14/15 in fraction form. 7/9 ÷ 5/6 = 0.9333 in decimal form.

Step-by-step explanation:

Answer:

14/15

Step-by-step explanation:

7/9 x 6/5 = 42/45 = 14/15

brainliest pls

Tabitha is 8 years younger than 4 times pats age. Tabitha is 40. How old is Pat

Answers

Answer:

pat is 62

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

Help me please with math

Answers

Answer:

B. 1 and 10

Step-by-step explanation:

answer is b....have a good day

x^2+19=10 solve algebraically
4x^2+3=43 solve algebraically

Answers

Answer:

[tex]a)\ x_1=-3i,\ x_2 =3i[/tex]

[tex]b)\ x_1=-\sqrt{10},\ x_2=\sqrt{10}[/tex]

Step-by-step explanation:

Given equations:

[tex]a)\ x^2+19=10\\\\b)\ 4x^2+3=43[/tex]

A. x² + 19 = 10

Step 1: Subtract 19 from both sides.

[tex]\\\implies x^2+19-19=10-19\\\\\implies x^2=-9[/tex]

Imaginary number rule: For any positive real number "k", [tex]\sqrt{-k} = i\sqrt{k}[/tex]

Note: Two imaginary (complex) solutions indicate that the graph will not intersect the x-axis. As a result, it has no real roots.

Step 2: Take the square root of both sides (positive and negative roots).

[tex]\\\implies \sqrt{x^2}=\sqrt{-9}\\\\\implies x=\pm\ i\sqrt{9}\\\\\implies x=\pm\ 3i[/tex]

Step 3: Separate the solutions.

[tex]\implies x_1=-3i,\ x_2 =3i[/tex]

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

B. 4x² + 3 = 43

Step 1: Subtract 43 from both sides.

[tex]\\\implies 4x^2++3-3=43-3\\\\\implies 4x^2=40[/tex]

Step 2: Divide both sides by 4.

[tex]\\\implies 4x^2=40\\\\\implies \dfrac{4x^2}4=\dfrac{40}{4}\\\\\implies x^2=10[/tex]

Step 3: Take the square root of both sides (positive and negative roots).

[tex]\\\implies \sqrt{x^2}=\sqrt{10}\\\\\implies x=\pm\ \sqrt{10}[/tex]

Step 4: Separate the solutions.

[tex]\implies x_1=-\sqrt{10},\ x_2=\sqrt{10}[/tex]

What we know about prime and common factors help us to find the _____
of two or more numbers.

Answers

greatest common factor

Answer:

greatest common factor

Step-by-step explanation:

greatest common factor the largest factor that any given numbers have in common

Let U - {q, r, s, t, u, v, w, x, y, z}
A = {q, s, u, w, y]
B-{q, s, y, z)
C-{v, w, x, y, z).
Determine the following.
(A ∩ B)’
Select one:
a. {t. v, x}
b.{s, u, w}
c. {r, t, u, V, W, X, Z)
d.{q, s, t, u, V, W, X, Y}

Answers

(AB)' is the complement of AB, or the set of all elements in the universal set U that do not belong to AB.

AB is the intersection of A and B, or the set of all elements common to both A and B.

We have

A = {q, s, u, w, y}

B = {q, s, y, z}

so that

AB = {q, s, y}

Then

(AB)' = {r, t, u, v, w, x, z}

which makes (c) the answer.

7. A rectangle has a perimeter of 24 motors
and an area of 35 square meters, what is
the length in meters of the longer side?
AI
B. 3
c.5
D.7
E8

Answers

Answer:

D

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

D

why must it be more than 20 characters???

Please help will give 20 points

Answers

Answer:

not sure but i think its B

Choose Yes or No to tell if the fraction 3 5 will make each equation true. 7 20 + □ = 19 20 Choose... □ + 3 10 = 3 15 Choose... 1 2 + 2 3 = □ Choose... 1 10 + 1 2 = □ Choose...

Answers

Answer:

True ; false ; False ; true

Step-by-step explanation:

Equation 1:

7 20 + □ = 19 20

19 / 20 - 7/20

(19 - 7) / 20

12/ 20 = 3/5

Equation 2:

□ + 3 10 = 3 15

3/5 + 3/10

(6 + 3) / 10 = 9/10

Equation 3:

1 2 + 2 3 = □

1/ 2 + 2/3

(3 + 4) / 6

7 / 6

Equation 4:

1 10 + 1 2 = □

1/10 + 1/2

(1 + 5) / 10

6 / 10 = 3/5

2x+3y=34
3x+2y=36
solve for x and y

Answers

Answer:

(8, 6 )

Step-by-step explanation:

Given the 2 equations

2x + 3y = 34 → (1)

3x + 2y = 36 → (2)

Multiplying (1) by 3 and (2) by - 2, then adding will eliminate the x- term

6x + 9y = 102 → (3)

- 6x - 4y = - 72 → (4)

Add (3) and (4) term by term to eliminate x, that is

5y = 30 ( divide both sides by 5 )

y = 6

Substitute y = 6 into either of the 2 equations and solve for y

Substituting into (1)

2x + 3(6) = 34

2x + 18 = 34 ( subtract 18 from both sides )

2x = 16 ( divide both sides by 2 )

x = 8

solution is (8, 6 )

just need answer ......​

Answers

161+x=180
-161.
x=19
The answer is 19

Answer:

x=19

Step-by-step explanation:

A straight line has a measurement of 180°.

In this line, it is split into 2 angles, 161° and x°.

To find x, subtract 180-161

180-161=19

Angle X is 19°

Hope I was able to help. Good Luck!

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