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const2013 [10]
3 years ago
9

A number is multipleed by 4.That the result added 12.The final number is 40.Whats is the original number?

Mathematics
1 answer:
Andrei [34K]3 years ago
4 0

Answer:the original number is 7

Step-by-step explanation:

Let the number be represented as X

so that when  multiplied by 4 gives 4x

which on addition to 12 gives

4x +12=40

4x=40-12

4x =28

x=28/4=7

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what is the slope of the line that passes through the points (-7, -4) and (-11, -2) write your answer in simplest form
Kamila [148]

We can find slope m with this formula

m=\dfrac{\Delta{y}}{\Delta{x}}

Where \Delta{y}=y_2-y_1=-2-(-4)=2 and \Delta{x}=x_2-x_1=-11-(-7)=-4 thus

m=-\dfrac{2}{4}=\boxed{-\dfrac{1}{2}}

The slope of line is -1/2.

Hope this helps.

7 0
3 years ago
Using the formula z=Kx/y<br> If z = 6 when x = 3 and y = 4, then what is z when x = 5 and y = 2?
Veseljchak [2.6K]

Answer:

z=kx/y

zy=kx

zy/x=kx/x ( divided both side by x. to find k)

k=zy/x

k=6×4/3(z=6,y=4,x=3)

k=24/3

k=8

so z=kx/y

z=8×5/2(replace the numbers in the place of variables,k=8,x=5,y=2)

z=40/2

z=20

3 0
3 years ago
What is the decimal form of 1/125
pickupchik [31]

Answer:

0.008

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the image of (0,6) after a dilation by a scale factor of 1/3
Pepsi [2]

Answer:

Step-by-step explanation:

What is the image of (0,6) after dilation by a scale factor of 1/3 centered at the origin

6 0
3 years ago
A restaurant bills comes to $28.35. Find the total cost, to the nearest cent, if the tax is 6.25% and a 20% tip is left on the a
True [87]

Answer:

$35.79. I hope this help!!

Step-by-step explanation:

First, we can determine the amount of the tax:

t

=

b

⋅

r

Where:

t

is the amount of the tax.

b

is the amount of the bill - $28.35 for this problem.

r

is the tax rate.

6.25

%

for this problem. Percent or % means per 100 or out of 100. We can write

6.25

%

as

6.25

100

Substituting gives:

t

=

$

28.35

⋅

6.25

100

t

=

$

177.1875

100

t

=

$

1.771875

t

=

$

1.77

Next, we can determine the amount of the tip:

p

=

b

⋅

g

Where:

p

is the amount of the tip.

b

is the amount of the bill - $28.35 for this problem.

g

is the gratuity rate.

20

%

for this problem. Percent or % means per 100 or out of 100. We can write

20

%

as

20

100

Substituting gives:

p

=

$

28.35

⋅

20

100

p

=

$

567.00

100

p

=

$

5.67

Now, we can add the amount of the bill, the tax and tip amounts to find the total cost:

$28.35 + $1.77 + 5.67=$35.79

7 0
3 years ago
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