Mathematics High School

Solve for x and y
7x - 3y = 4 and -10x + 3y = 2

A. x = -2, y = -6
B. x = 6, y = -2
C. x = 2, y = -6
D. x = 6, y = 2

Answers

Answer 1
You can use elimination
7x - 3y = 4
-10x + 3y = 2
Add both equations
-3x = 6, x = -2
Plug in -2 for x in one equation
7(-2) - 3y = 4
-14 - 3y = 4
-3y = 18, y = -6
Solution: x = -2, y = -6

Related Questions

Which of the following is true?

Answers

Answer:

option B should be correct

what is the price of a $600 bike 15% off

Answers

Answer: You will pay $510 for a item with original price of $600 when discounted 15%.

What is the value of x in the equation 6 − 3 ⋅ 6 − 1 6 4 = 1 6 x ?

Answers

x= -11

Hope this helps

:T

:B

:D

Sophia drove 63 miles. Sophia's car used 2 gallons of gas. How many miles per gallon did Sophia car get?

Answers

Answer:

31.5 mi/gal

Step-by-step explanation:

[tex]63[/tex]÷[tex]2[/tex][tex]=31.5[/tex]

So, Sophia got 31.5 miles per gallon

Answer: 31.5 I think.

Step-by-step explanation:

Give other person brainliest

Find the distance between 2 and -2.
A) -6
B) -4
C) 0
D) 4​

Answers

Answer:

4

Step-by-step explanation:

We can do this problem by doing the absolute value of the difference between 2 and -2.

2-(-2)=4. Absolute value of 4 is 4.

Hope this helped.

~cloud

Answer:

4

Step-by-step explanation:

The radius of a circle is 4 feet. What is the area?

r=4ft

Give the exact answer in simplest form.

Answers

Abswer is here

100.571429

Write an equation for two angles A and B that are supplementary.

A. a + b = 180

B. a + b = 100

C. 2ab = 180

D. a + b = 90​

Answers

Answer:

A. a + b = 180 is the correct option.

PLEASE HELP I HAVE 5 MINUTES TO DO THIS AND I HAVE NO CLUE HOW
WILL MARK BRAINLIEST!!

Answers

A
B
C
A
. I think I wish you the best

A plan can travel 420 miles in 80 minutes. Find a unit that describes this situation

Answers

Answer:

5.25 miles per minute

Step-by-step explanation:

420/80 = 5.25 so it is 5.25 miles per minute as it is 80 minutes

f ( x ) = − x 2 − 12 Find f ( − 3 )

Answers

Answer:

f(-3)=-21

Step-by-step explanation:

f(x)=-x2-12

f(-3)=-(-3)2-12

f(-3)=-9-12

f(-3)=-21

Answer:

-3

Step-by-step explanation:

x=-3 substitute in the equation

+3 squared-12=-3

Just need the answer of what the surface area is

Answers

Answer:

54

Step-by-step explanation:

Which of the following functions is graphed below?

Answers

Answer:

B:y=|x+2| -3

The graph shows the points throughout the equation

find the value of two numbers if their sum is 39 and their difference is 1

Answers

20+19=39

20 is 1 more than 19 making 19 1-less than 20. The difference is 1 between the two numbers

⚠️ BRAIN LIST ⚠️
⚠️ BRAIN-LIST ⚠️
Please HELP. Solve anyone!!!

Answers

Answer:

1) x = 36

2) x = 127

3) x = 36

Step-by-step explanation:

1)

x + 144 = 180

x = 36

2)

15 + x + 38 = 180

x + 53 = 180

x = 127

3)

2x + 16 + 92 = 180

2x + 108 = 180

2x = 72

x = 36

5.


A. never

B. not enough information provided

C. sometimes

D. always

Answers

Answer:

Step-by-step explanation:

The correct answer is Always

kason11wd and 2 more users found this answer helpful

THANKS  

1

4.0

(1 vote)

1

the correct answer was never. I appreciate your answer though.

.............................................................................................................................................................

P(A and B) means add A and B

if both A and B are both greater then 1/2

then when they are added they will always be greater than 1

bolivianouft and 2 more users found this answer helpful

THANKS  

1

5.0

(1 vote)

1

the correct answer was never. I appreciate your answer though.

Answer:The correct answer is Always

The probability of spinning a 9 on Luke's game spinner is . The probability of rolling a 6 on a fair
die is Which shows the probability of spinning a 9 and then rolling a number that is NOT a 6?

Answers

Answer:

First, there are  

3

numbers (6, 7, 8) greater than  

5

on a spinner numbered  

1

-

8

(1, 2, 3, 4, 5, 6, 7, 8). Therefore, there is a:

3

8

probability of spinning a number greater than  

5

.

However, there is only a 50-50 or  

1

2

chance of tossing a tail on a coin.

Therefore the probability of spinning a number greater than  

5

AND tossing a tail is:

3

8

×

1

2

=

3

16

Or

3

in  

16

Or

18.75%

Step-by-step explanation:

x is 40% of 60

x=?

please help!!​

Answers

Answer:

x = 24

Step-by-step explanation:

x = .4(60)

x = 24

40% of 60 can be found by converting 40% to a decimal and multiplying it by 60.

40% = 0.4

60x0.4=2.4

Now move the decimal point right one.

So x is 24.

---

hope it helps

Help please the question is in the photo

Answers

First one (ignore22222323333333)

What would be the absolute value of Point R shown on the number line?

Answers

Answer:

|-2| = 2

Step-by-step explanation:

Use the order of operations to solve for C when n = 5.
C = 7(4n + 2) - 8
Use order of operations to solve for C when n = 5.
C = 45 - 3n

Answers

C=7(4(5)+2)-8
C=7(20+2)-8
C=7(22)-8
C=154-8
C=146

C=45-3(5)
C=45-15
C=30

i need help please and thank you i will give a brainliest for the correct answers so it’s more than once it say select all that apply

Answers

Answer:

I would say C or B

Step-by-step explanation:

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Match the word to its description. The difference between the lowest and highest value 1. mode The middle value 2. mean 3. median The most frequent value PP 4. range The average​

Answers

Answer:

range

Step-by-step explanation:

The difference between the lowest and the highest number is called the range. The middle value is the median (it's in the "mid"dle, median) The mean is the average. And the mode is the most frequent value.

Please please help me it would mean a lot. Find the area

Answers

Answer: 10.825 Unit ^2

Explanation: Formula for area of triangle: A = 1/2 bh. Plug in variables. A = (1/2) (4.33)(5). Solve.

I really need help fast and ill do anything just help me plz

Answers

Answer is C. 12.22cm

C = pi x diameter

Diameter = 20cm

You times pi by 20cm (diameter) to get the circumference of approx 62.84cm

Then times the circumference by the angle in the circle

62.84 x 70/360 = 12.22cm

Sophia went to see a play at the theater downtown. 8:30 PM. The first act was 55 minutes long. Intermission lasted for 20 minutes, and the second act was an hour long. What time was it when the play finished?

Answers

10:45 is when the play is done


PLS ANSWER DUE
TODAY! WILL
MARK BRAINLIEST
3. Find the measure of arc JK.
Hint - arc LK is a semi-circle!
Find JK

A) 90
B) 116
C) 128
D) 130

Answers

Answer:

Option C

Step-by-step explanation:

We will analyze the figure and note down the properties given in the figure,

1). LK is a diameter so this line (chord) divides the circle into two arcs measuring 180°.

m(arc LJK) = m(arc LK) = 180°

2). m(∠JKL) = 28°

Therefore, by the property inscribed angle and intercepted arcs,

Intercepted arc (JL) = 2 × (Inscribed angle JKL)

m(arc JL) = 2(26°)

               = 52°

Now we will use these two points to get the measure of arc JK.

m(arc JK) + m(arc LK) + m(arc JL) = 360°

m(arc JK) + 180° + 52° = 360°

m(arc JK) = 360° - 232°

                = 128°

Option C will be the correct option.

what is 10x32 I will give brainliest and thanks

Answers

Answer:

320

Step-by-step explanation:

Help please with number 1. Writw the orderd pair that coresponds to Point H.

Answers

Answer: yeah you got it

Step-by-step explanation:

You are given two pairs of triangles. For the first pair of triangles, each side and angle of one triangle is congruent to the corresponding side and angle of the other. You show that rigid motions can transform one triangle so that it matches up with the other. For the second pair of triangles, you show that rigid motions can transform one triangle so that each angle or side of one triangle matches exactly with a corresponding angle or side of the other triangle. What have you proved?

Answers

Options:

a) If corresponding pairs of sides and corresponding pairs of angles of two triangles are congruent, then the triangles can be matched up exactly using rigid motions.

b) If two triangles can be matched up exactly using rigid motions, then the corresponding pairs of sides and corresponding pairs of angles of the triangles are congruent.

c) Two triangles can be matched up exactly using rigid motions if and only if corresponding pairs of sides and corresponding pairs of angles are congruent.

d) If corresponding pairs of sides and corresponding pairs of angles of two triangles are not congruent, then the triangles are not congruent.

Answer:

c) Two triangles can be matched up exactly using rigid motions if and only if corresponding pairs of sides and corresponding pairs of angles are congruent.

Step-by-step explanation:

For both pairs of triangles, what you proved is how to use rigid motions (i.e. rigid transformations) to make congruent shapes.

When rigid transformation is applied to a shape, the image (i.e. result) of the  transformation produces an exact shape (i.e. equal corresponding angles and corresponding sides), meaning that the side lengths and the angles of the preimage (before transformation) and the image (after transformation) is unaltered.

Option (c) is true

HELP!!! 100 POINTS!!! Find the total surface area of a cylinder with a height of 7 cm and radius of 3 cm. Leave your answer in terms of π.

140π cm2
91π cm2
60π cm2
51π cm2

Answers

Answer:

60π cm2

Step-by-step explanation:

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