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3 years ago

Can someone help me with this?

Mathematics

2 answers:

Lorico [155]3 years ago

8 0

X^2=19^2+7^2=361+49=410
Therefore x=20.25

ioda3 years ago

6 0

Answer:

Solution given:

<J=90°[tangent to the circle is perpendicular to radius]

In right angled triangle ∆KJL

base[b]=7

hypotenuse [h]=x

perpendicular [p]=19

by using Pythagoras law

p²+b²=h²

19²+7²=x²

x=√410

x=20.248

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^ { (5x ^ { 3 } -7x ^ { 2 } +3x-4)-(8x ^ { 3 } +2x ^ { 2 } +3x-7) }

Tomtit [17]

Answer:

$-3x^{3} -9x^2+3$

Step-by-step explanation:

Given

$(5x^{3} -7x^{2} +3x-4)-(8x ^ { 3 } +2x ^ { 2 } +3x-7) }$

Required

Simplify

$(5x^{3} -7x^{2} +3x-4)-(8x ^ { 3 } +2x ^ { 2 } +3x-7) }$

Open brackets

$5x^{3} -7x^{2} +3x-4-8x^3 -2x^2 -3x+7$

Collect Like Terms

$-8x^3+5x^{3} -7x^{2} -2x^2+3x -3x-4+7$

Simplify like terms

$-3x^{3} -9x^2+3$

6 0

3 years ago

Solve for x in the equation x2-12x+36=90

vazorg [7]

$x*2-12x+36=90

-10x+36=90

-10x+36-36=90-36

-10x=54

$
-10x/-10=54/-10
x=27/5
Hope this helps:)

4 0

3 years ago

A survey of sports fans reveals that 49 say their favorite sport is football, 35 say their favorite sport is baseball, 11 say th

Alex787 [66]

Answer:

9.8

Step-by-step explanation:

Given that a survey of sports fan was conducted counting no of persons whose favourite was football, baseball, basketball and hockey.

Given that 49 like football, 35 baseball, 11 basket ball and 5 hockey

We have to find ratio of football fans to hockey fans.

We find that hockey fans are 5 and football fans are 49

Ratio of football fans to hockey fans =49/5

=9.80

The ratio means if 9.80 football favourite persons are there there would be only one person whose favourite is hockey.

7 0

3 years ago

What is the general form of the equation of the line shown? Y-2=0 y+2=0 X-2 = 0

Tatiana [17]

Answer:Option A is correct.

y-2=0

Step-by-step explanation:

Option A is correct.

General form of the equation of the line: y-2 = 0

Step-by-step explanation:

The general form of the equation is given by:

y = mx +b where m is the slope and b is the y-intercept.

y-intercepts of the line is the value of y at the point where the line crosses the y-axis(i.e x= 0)

From the given figure;

we can see that the line crosses the y-axis at y =2 and also here the slope is , m= 0

therefore, by definition of y-intercepts

y-intercept (b) = 2

Therefore, the equation of line as shoen in figure is:

y = (0)x + 2

y = 2

y-2 = 0

Therefore, the general form of the equation line as shown in the figure is:

y-2 =0

6 0

3 years ago

Train A leaves Westtown and travels at 50 mph toward Smithville, 330 miles away. At the same time, Train B leaves Smithville and

lianna [129]

The answer to this question is that the trains will meet after 3 hours. We can work this out by considering that is the closing speed of the two trains is (50+60=)110 miles per hour, then this must mean that the combined distance that the trains need to travel before they meet is 330 miles. If the time that is taken to travel 330 miles at 110 miles per hour, then you simply need to divide 330/110 to find your answer - 3 hours.

7 0

4 years ago

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