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Gre4nikov [31]
3 years ago
10

A particular math test has eight questions and a perfect paper is worth 100 percentage points. What is the rate of change of the

score per number of questions answered correctly?
Mathematics
1 answer:
Ostrovityanka [42]3 years ago
4 0
100/8 = 12.5
The rate of change is 12.5
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Is -2x-6=2x+6 no soulution
Olegator [25]

Answer:

No

Step-by-step explanation:

Let's solve your equation step-by-step.

−2x−6=2x+6

Step 1: Subtract 2x from both sides.

−2x−6−2x=2x+6−2x

−4x−6=6

Step 2: Add 6 to both sides.

−4x−6+6=6+6

−4x=12

Step 3: Divide both sides by -4.

−4x/−4 = 12/-4

=

x=−3

6 0
3 years ago
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. A pedestal is built using a trapezoid-shaped base. Find the area of the trapezoid.
Igoryamba

18m^2

area of a trapezoid = (a+b)/2 * h, where a and b are bases 1 and 2, and h is height

(4+8)/2 * 3

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4 0
2 years ago
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The solid block below is shaped so that it will interlock with another solid block to form a cube.
jeka57 [31]

Answer:

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6 0
2 years ago
Y=6x-11 -2x-3y=-7 solve each system of equation by substitution
Anit [1.1K]

Answer:

(2, 1 )

Step-by-step explanation:

Given the 2 equations

y = 6x - 11 → (1)

- 2x - 3y = - 7 → (2)

Substitute y = 6x - 11 into (2)

- 2x - 3(6x - 11) = - 7 ← distribute and simplify left side

- 2x - 18x + 33 = - 7

- 20x + 33 = - 7 ( subtract 33 from both sides )

- 20x = - 40 ( divide both sides by - 20 )

x = 2

Substitute x = 2 into (1) for corresponding value of y

y = 6(2) - 11 = 12 - 11 = 1

Solution is (2, 1 )

5 0
3 years ago
Ivy invested $150 000 in a savings account that offers to pay simple interest of 0.2% per year. How much interest will she recei
kvv77 [185]

Answer:

The answer is the CD was for 3 years.

Step-by-step explanation:

First, write the equation.

I=Prt

Next, substitute the given values.

$198=$1,200×5.5%×t

Next, write the percent as a decimal.

$198=$1,200×0.055×t

Next, simplify.

$198=$66×t

Then, solve for t.

3=t

8 0
2 years ago
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