Mathematics College

(ReallyNeed) 1. Which of the following is equivalent to 5x + 2y = 20?
A y = x - 10
c y=-x + 10
Dy=x+4
B y =
--X-4

Answers

Answer 1

1. D
Y=x+4.
That’s the answer

Related Questions

1/2^-2 2^-3 -4^5
What is the value of
for x = 2 and y=-4?

Answers

value of x=2 is-8 and y=-4 is -1024

Mark and a friend went out for dinner the bill was $23.40 they leave a 20% tip how much of a tip will they leave ?

Answers

Answer:

answer is 4.68$

Step-by-step explanation:

23.40×20/100=4.68

4.68$ is 20% of 23.40$

4.68$

Conic section

For questions 10 - 11, solve each system. In your work, identify the shape of the graph of each
equation. (5 points each)
(7y2 + x2 = 64
10.
x+y = 4

Answers

Answer:

Step-by-step explanation:

7[tex]y^{2}[/tex]+[tex]x^{2}[/tex]=64x+y=4

First, we isolate the variable on the second equation so that we can have an x solution to plug in:

x=-y+4

Now, we plug this in to the first equation:

[tex]7(-y+4)^{2} +(-y+4)^{2} =64[/tex]

We can now put the 7 into the parentheses and then square root the equation:

[tex]\sqrt{(-7y+28)^{2}} +\sqrt{(-y+4)^{2}} =\sqrt{64}\\-7y+28-y+4=8\\-8y=40\\y=-40[/tex]

We then plug this in to the original equation to find x

[tex]x+-40=4\\x=-36[/tex]

This means y=-40 and x=-36. I believe that's what you were asking. Let me know if it is something else

Select two ratios that are equivalent to 2:9

Choose 2 correct answers

Answers

Answer:

4:18 and 6:27

Step-by-step explanation:

If you have 2 pieces of spaghetti that have lengths 4 cm and 10 cm, what could be the possible length of a third piece of spaghetti to complete the triangle? cm < x < cm

Answers

Answer:

6 < third side < 14

Third side must be greater than 6 and less than 14

Step-by-step explanation:

A triangle can be formed from 2 sides of any length.

The third side must be longer than the difference of the other 2 sides and

the third side must be less than the sum of the other 2 sides.

(if this question is from k12 lesson check)

True or False: The Commutative Property of Addition states that for all expressions a and b , ab = ba.

Answers

According to the Commutative Property of Addition, ab = ba for all expressions a and b: FALSE

What is the Commutative Property of Addition?According to the commutative property of addition, altering the order of addends has no impact on the sum. Here's an illustration: 4 + 2 = 2 + 4 4 + 2 = 2 + 4 4+2=2+4. The addition and multiplication arithmetic operations are covered by the commutative property. This implies that the outcome of adding or multiplying two numbers remains unchanged if the order or position of the numbers is changed. For instance, 4 + 5 equals 9, and 5 + 4 equals 9.

According to the Commutative Property of Addition, rearranging the addends has no impact on the sum.

a+b=b+a

Therefore, the statement "according to the Commutative Property of Addition, ab = ba for all expressions a and b" is FALSE

Know more about Commutative Property of Addition here:

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How do I solve this?

Answers

Answer:

The answer is 7.5

Step-by-step explanation:

3x+18=9x−27

3x+18−9x=9x−27−9x

−6x+18=−27

−6x+18−18=−27−18

−6x=−45

−6x /−6 = −45 /−6

x = 15 /2 which is equal to 7.5 as a decimal.

The rule is applied to ΔBCD to produce ΔB"C"D". Point B" of the final image is at (–4, 1).

What are the coordinates of point B on the pre-image?

(–2, –5)
(0, –5)
(2, 3)
(5, 0)

Answers

Answer:

2,3

Step-by-step explanation:

i took the quiz

Answer:

2,3

Step-by-step explanation:

Solve the equation.
8 (2-6v) +19=-61

Answers

Answer:

v = 2

Explanation:

8(2 − 6v) + 19 = −61

[ Simplify both sides of the equation ]

8(2 − 6v) + 19 = −61

(8)(2) + (8)(−6v) + 19 = −61 (Distribute)

16 + −48v + 19 = −61

(−48v) + (16 + 19) = −61 (Combine Like Terms)

−48v + 35 = −61

[ Subtract 35 from both sides ]

−48v + 35 − 35 = −61 − 35

−48v = −96

[ Divide both sides by -48 ]

−48v / -48 = −96 / -48

v = 2

- PNW

I need to know the answer lol

Answers

the orange one , 5/12

hope this helps! please mark brainliest :)

Answer:

5/12

Step-by-step explanation:

I have reached 250 thanks which means I helped 250 wonderful people :D

Answers

Answer:

that's great to hear :)

Step-by-step explanation:

Answer:

Wow! Congratulations....

Other:

Umm brainliest?

Is (yx1)+2 equal to y+2

Answers

(yx1) + 2
y + 2
yes you’re right !

correct! (yx1)+2 = y+2

What type of relationship does this equation represent?

y = 9x -7
Proportional
Nonproportional

Answers

Answer:

Nonproportional

Step-by-step explanation:

hope it helps.

Answer:

non proportional is your answer

Factor completely x^2 - 81

Answers

Use the sum-product pattern

2
−
8
1
x
2
−
81
x2−81

2
+
9

−
9

−
8
1

Factor [tex]x^2-81[/tex] by using the difference of two squares.

[tex]x^2-y^2=(x+y)(x-y)[/tex]

Our x is x

Our y is 9 (As y² = 81, therefore a single y would be 9)

[tex](x+9)(x-9)[/tex]

Thus, the final answer is (x+9)(x-9)

Ms. Hartt burns 300 calories when she runs for 1 hour. If Ms. Hartt runs 5 hours in a week how many calories would she burn?

Answers

Answer: If Ms. Hartt burns 300 calories in 1 hour, and runs 5 hours in a week, she burns 1,500 calories in a week.

Explanation: 300 x 5 = 1,500

What is the cubic Yardage of a 60'X40'X6"
thick lab?

Answers

Answer:

ค้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้ ฏ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎ํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํํ ค้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้ ฏ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎\ค้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้้ ฏ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎

Step-by-step explanation:

Please explain the relationship between a hypothesis and an experiment.

Answers

Answer:

A hypothesis is "is a suggested solution for an unexplained occurrence that does not fit into current accepted scientific theory. The basic idea of a hypothesis is that there is no pre-determined outcome.". And an experiment is "is defined as to try out something new or to test a theory. An example of experiment is when you try out a new hair style. An example of experiment is when you use test tubes and chemicals in a lab to complete a project and to try to better understand chemical reactions.".

Find X HELP ME please!!

Answers

Answer:

The answer is A) 3 Hope this helped

three orders are placed at a pizza shop.
two small pizzas, a liter of soda, and a salad costs $14.
one small pizza, a liter of soda, and three salads costs $15.
three small pizzas, a liter of soda, and two salads costs $22.
how much does each item cost?

Answers

Given:

Two small pizzas, a liter of soda, and a salad costs $14.

One small pizza, a liter of soda, and three salads costs $15.

Three small pizzas, a liter of soda, and two salads costs $22.

To find:

The cost of each item.

Solution:

Let x be the cost of a small pizza.

y be the cost of a liter of soda

z be the cost of a salad.

According to the question, two small pizzas, a liter of soda, and a salad costs $14.

[tex]2x+y+z=14[/tex] ...(i)

One small pizza, a liter of soda, and three salads costs $15.

[tex]x+y+3z=15[/tex] ...(ii)

Three small pizzas, a liter of soda, and two salads costs $22.

[tex]3x+y+2z=22[/tex] ...(iii)

From (i), we get

[tex]z=14-2x-y[/tex] ...(iv)

Putting [tex]z=14-2x-y[/tex] in (ii), we get

[tex]x+y+3(14-2x-y)=15[/tex]

[tex]x+y+42-6x-3y=15[/tex]

[tex]-5x-2y=15-42[/tex]

[tex]-(5x+2y)=-27[/tex]

[tex]5x+2y=27[/tex] ...(v)

Putting [tex]z=14-2x-y[/tex] in (iii), we get

[tex]3x+y+2(14-2x-y)=22[/tex]

[tex]3x+y+28-4x-2y=22[/tex]

[tex]-x-y=22-28[/tex]

[tex]-(x+y)=-6[/tex]

[tex]x+y=6[/tex]

Multiply both sides by 2.

[tex]2x+2y=12[/tex] ..(vi)

Subtracting (vi) from (v), we get

[tex]5x+2y-2x-2y=27-12[/tex]

[tex]3x=15[/tex]

[tex]x=5[/tex]

Putting x=5 in (vi), we get

[tex]2(5)+2y=12[/tex]

[tex]10+2y=12[/tex]

[tex]2y=12-10[/tex]

[tex]2y=2[/tex]

[tex]y=1[/tex]

Putting x=5 and y=1 in (iv), we get

[tex]z=14-2(5)-(1)[/tex]

[tex]z=14-10-1[/tex]

[tex]z=3[/tex]

So, [tex]x=5,y=1,z=3[/tex].

Therefore, the cost of a pizza is $5, cost of a liter of soda is $1 and cost of salad is $3.

Can someone tell me where to graph this using plots?

Answers

This is where you would plot the graph. Desmos helps a lot too

What is the measure of ZA?
100"
A. 30
B. 50°
C. 70°
D. 130°

Answers

Answe is B: 50
It needs to equal 180 so
100+30=130
180-130=50

Please help me with this maths question

Answers

Answer:

add all of them together then divide bye the number of lines

Step-by-step explanation:

Jana ran the first 312 miles of a 5-mile race in 13 hours. What was her average rate, in miles per hour, for this first part of the race? Explain how you solved the problem.

Answers

Answer:

speed = distance / time

Jana's speed is

speed = (3.5 mi)/(1/3 h) = 3*3.5 mi/h = 10.5 mi/h

x
y
-3
6
-1
4.
0
3
1
3
3
4
3
6

Answers

it’s not good to solve

WILL MARK BRAINLIEST!!

Answers

Answer:

only p(x)

Step-by-step explanation:

The others have a restricter domain

what is 8x+6 simplified?

Answers

Answer:

4x+3

Step-by-step explanation:

8 and 6 are multiple of 2 so divide 8 /2 = 4 and divide 6/2=3

A flagpole casts a shadow that is 24 ft long at the same time you cast a shadow that is
4.5 ft long. If you are 6 ft tall, how tall is the flagpole?

Answers

Answer:

32 ft tall

Step-by-step explanation:

24 divided by 4.5 is 5.3 repeating. 6 times 5.3 is around 32

The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the percent error? 1 point 82.6% 21% 20% 17.4% Last week, you finished Hurry

Answers

Answer:67

Step-by-step explanation: 82.6% is over 49

Select all the equations below that have a slope of -5.

A
y=2x−5

B
y=−5x+2

C
y=10−5x

D
y=10x−5

Answers

B. y=-5x+2 has a slope of -5.

Which expression is equivalent to 2(3x+4)(x−1)(x−3)?

A
6x3−16x2−14x+24

B
6x3−4x2−34x−24

C
3x3−8x2−7x+12

D
6x3+20x2−2x−24

Answers

Answer:

Step-by-step explanation:

=(2(3x+4)(x−1))(x+−3)

=(2(3x+4)(x−1))(x)+(2(3x+4)(x−1))(−3)

=6x3+2x2−8x−18x2−6x+24

=6x3−16x2−14x+24

After solving the given expression, the equivalent expression will be equal to 6x³ - 16x² - 14x + 24.

What are arithmetic Operations?

The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or even more items.

Included in them is the study of integers, especially the order of operations, which is important for all other areas of mathematics, notably algebra, data management, and geometry.

As per the given expression in the question,

2(3x+4) (x−1) (x−3)

(6x + 8) (x² -3x - x + 3)

6x³ - 18x² - 6x² + 18x + 8x² - 24x - 8x + 24

Now, collect similar terms and add them,

6x³ - 16x² - 14x + 24

To know more about arithmetic operations:

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Other Questions

(ReallyNeed) 1. Which of the following is equivalent to 5x + 2y = 20? A y = x - 10 c y=-x + 10 Dy=x+4 B y = --X-4

Answers

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(ReallyNeed) 1. Which of the following is equivalent to 5x + 2y = 20?
A y = x - 10
c y=-x + 10
Dy=x+4
B y =
--X-4