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3 years ago

2) Find the value of two numbers if their sum is (14 and their difference is 2.

Mathematics

1 answer:

Alchen [17]3 years ago

7 0

Answer:

8 and 6

Step-by-step explanation:

Because 8 plus 6 equals 14 and the difference between the two numbers is 2

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Erin says the first step is to set Latex: 2x+7

garik1379 [7]

Answer:

3=47x86= and 4838x7694

Step-by-step explanation:

6 0

3 years ago

What is the cost of constructing a fence 6 feet, 6 inches, high around a lot measuring 90 feet by 175 feet, if the cost of erect

boyakko [2]

Answer:

The total cost is $3,504.63

Step-by-step explanation:

Length of fence = 90 feet

Breadth of fence = 175 feet

Height of fence = 6 feet, 6 inches

1 inch = 0.0833333 feet

6 inches = 6*0.0833333 =0.4999998 feet

So, Height of fence = 6 feet + 0.49 feet =6.49 feet ≈ 6.5 feet

Perimeter = $2(Length \times breadth)=2(90 +175) = 530 feet$

Cost of erecting the fence is $1.25 per linear foot

So, Cost of erecting the fence in 530 feet = $530 \times 1.25 = 662.5$

Total surface area = $2(length +breadth) Height =530 \times 6.5=3445ft^2$

The cost of materials is $0.825 per square foot of fence

Cost of material for 3445 sq.feet = $3445 \times 0.825 =2837.7525$

So, total cost = 2842.125+662.5 = 3504.63

Hence The total cost is $3,504.63

5 0

3 years ago

If 20% of x is y, and 30% of y is z, then what percent of x is z?

Bess [88]

Your answer is 6% of x.

We can write the given information as equations to find the answer:

Another way to write "20% of x" is to write 0.2x, so therefore 0.2x = y

You can also write "30% of y" as 0.3y, so 0.3y = z

Now we can substitute in the first equation to the second equation, as we know what y equals in terms of x:

0.3(0.2x) = z

Multiplying out we get:

0.06x = z, and 0.06 as a percentage is 6%

I hope this helps!

3 0

4 years ago

which equation is in slope-intercept form and represents a line with the slope 1/4 through the point of (0,0)

Westkost [7]

Hi there!

The general form of the equation of a line in slope-intercept form is
y = ax + b

With 'a' representing the slope of the line. We know that the slope of this line is 1/4, so we can plug in this value into the equation of the line.

y = 1/4 x + b
When the line passes through the point (0,0) we can also plug in the x- and y-coordinate into the equation, and we'll see that some easy algebra will help us find our solution.

0 = (1/4) * 0 + b
First switch sides

(1/4) * 0 + b = 0
Multiply

0 + b = 0
b = 0

Now we've found our value of 'b', which we can plug back into the equation in slope-intercept form to find our final solution.
y = 1/4 x
or
f(x) = 1/4 x

~ Hope this helps you!

7 0

3 years ago

You have in your cash register a 10 dollar bill, 3 five dollar bills, 8 one dollar bills, and 12 quarters, 5 dimes and 10 nickel

nydimaria [60]

First, see how much money you have:

10 + 3(5) + 8(1) + 12(0.25) + 5(0.1) + 10(0.05) =

10 + 15 + 8 + 3 + 0.5 + 0.5 =

37

You need to deposit $7 into the safe, since 37 - 7 = 30.

7 0

3 years ago

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