Which of the following identities would be the best option to use to verify the identity below?

Answers

Answer 1

Answer: is there any choices for it

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What's substitution for x=y-7;x+8y=2

Answers

X=2-8y
y=x+7
y=2-8y+7
9y=2+7
9y=9
y=1

x=y−7;x+8y=2
Step: Solve x=y−7 for x:Step: Substitute y−7 for x in x+8y=2:
x+8y
=2y−7+8y=2
9y−7=2(Simplify both sides of the equation)
9y−7+7=2+7(Add 7 to both sides)9y=9
9y/9=9/9(Divide both sides by 9)
y=1
Step: Substitute 1 for y in x=y−7:x=y−7
x=1−7
x=−6(Simplify both sides of the equation)
Answer:x=−6 and y=1

What is 30% as a fraction

Answers

= 30%

= 0.3

= 3/10

Hope this helps.

$\boxed{30\% = (3\not0)/(10\not0)= (3)/(10)=0.3 }$

Please help will mark brainy A) 9¢/qt
B) $91.43¢/qt
C) 64¢/qt
D) 0.64¢/qt

Answers

I am pretty sure it’s B

answer:

b. $91.43/qt

step-by-step explanation:

it's a lot of work

PLEASE HELP!!!!!!!If JK = 6r, KL = 3r, and JL = 27, what is the value of r?

a. 1.5
b. 9
c. 3
d. 4

Answers

Well to solve for r, what you would need to do is make up an equation based on the expressions that represent the segments of the line in the image.

JK represents the first aspect of the line and is equal to 6r.

Likewise, KL represents the second component of the line and is equal to 3r.

We also know the total value from the first point to the last one, and that is 27.

Now simply add the first 2 expressions that represent the segments of the line and make it equal to the total length of the line, 27 and then solve for r.

6r + 3r = 27
9r = 27
r = 27/9
r = 3.

So now we know that JK is 6 • 3 = 18 and KL is 3 • 3 = 9, thus adding both together will give a value of 27, 18 + 9 = 27.

The solution is C.3

Answer:

Its 3

Step-by-step explanation:

The map below shows the length of a proposed land bridge at Phil Hardberger Park. The length of the land bridge is represented by PHin the map below.
P(2,55)
H(32, 15)
On the map, each unit represents 1 yard. To the nearest yard, what is the actual length of the land bridge from P to H?
A 50 yards
B. 150 yards
C. 78 yards
D. 234 yards

Answers

Answer:

A; the actual length of the land bridge from P to H is 50 yards

Step-by-step explanation:

Here in this case, given the coordinates of P and H, we want to calculate the actual length of the distance between the two points.

Mathematically, to calculate this distance, we make use of the distance formula;

D = √(x2-x1)^2 + (y2-y1)^2

In this case, (x1,y1) = (2,55) while (x2,y2) = (32,15)

Substituting these values

D = √(32-2)^2 + (15-55)^2

D = √(-30)^2 + (-40)^2

D = √(900 + 1600)

D = √(2,500)

D = 50 units

Now, we know that each units represent 1 yard, thus 50 units will represent 50 * 1 = 50 yards

Reducing a fraction to the lowest terms does not change the fraction's value. True / False

Answers

Answer: True

For example, 2/4 reduces to 1/2. Both are equal to the terminating decimal value of 0.5

Two other examples:

28/7 = 4/1 = 4
8/12 = 2/3 = 0.667 approximately

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