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3 years ago

When two is subtracted from one fourth of a number the result is 17 find the number

Mathematics

1 answer:

lisov135 [29]3 years ago

7 0

76

17+2=19
19×4=76

I honestly don't know, cause I hate math.

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At a school costume party, seven girls wore masks nine

DiKsa [7]

33
7 girls wore mask so 7
15-9 is how many boys wore mask so 6
7+6= 13
20+ 13 is 33

8 0

2 years ago

What is the slope of a line that is perpendicular to the line y = 1?

Viktor [21]

Y = 1

Using y = mx + c.

Compare to y = 1, y = 0x + 1 ,

We can see that the slope m = 0 and the vertical intercept, c = 1.

For the line perpendicular to y = 1

Condition for perpendicularity m₁m₂ = -1

m₁ = 0, m₂ = ?

0*m₂ = -1

m₂ = -1/0 = Negative Infinite or Infinite

Slope of line perpendicular to y = 1, is = Infinite.

7 0

2 years ago

If x² + xy – 3y = 3, then at the point (2, 1), dy/dx

Scilla [17]

Answer:

Step-by-step explanation:

We have the equation:

$x^2+xy-3y=3$

Take the derivative of both sides with respect to x:

$\frac{d}{dx}[x^2+xy-3y]=\frac{d}{dx}[3]$

Implicitly differentiate:

$2x+y+x\frac{dy}{dx}-3\frac{dy}{dx}=0$

Solve for dy/dx:

$\frac{dy}{dx}(x-3)=-2x-y\\$

Divide:

$\frac{dy}{dx}=-\frac{2x+y}{x-3}$

To find dy/dx at (2, 1), substitute 2 for x and 1 for y. So:

$\frac{dy}{dx}_{(2, 1)}=-\frac{2(2)+1}{2-3}=-\frac{5}{-1}=5$

Hence, our answer is A.

4 0

2 years ago

39 is 150% of what number plz show work

slava [35]

Okay 39 is 150% of what number? so like remember whenever you see percent you have to divide by 100
so let's start
First. we have 150% so let's divide 150%/100=1.5

Second. you will multiply 1.5*39= 26%

and you can also do it like easy way.

39/150=0.26
0.26/100=26

39 is 26% of 150

hope i help :p

3 0

2 years ago

Read 2 more answers

Find the area of the figure

MakcuM [25]

9514 1404 393

Answer:

24.885 in²

Step-by-step explanation:

Use the formula for the area of a triangle.

A = 1/2bh . . . . . . . where b is the base length and h is the height perpendicular to the base

A = 1/2(7.9 in)(6.3 in) = 24.885 in²

_____

<em>Additional comment</em>

The given side lengths cannot form a triangle, as the side shown as 14.7 is too long for the ends of the other segments to connect to. The attachment shows that side should be 11.97 in.

5 0

1 year ago