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3 years ago

Elsa drove 245 m in 4.5 h. How many hours will it take her ti drive 650 m?

Mathematics

2 answers:

Taya2010 [7]3 years ago

8 0

Answer: It took 65 hours for her to drive

Step-by-step explanation:

VMariaS [17]3 years ago

5 0

It will take her 11 almost 12 hours to drive 650m

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Graph the inequality: Y>-x+3 I would very much appreciate the help :)

Semmy [17]

Answer:

See attached picture.

Step-by-step explanation:

To graph the inequality, use the y = mx + b form for linear equations. Here y > -x + 3 has slope of -1 and y-intercept of 3. Plot a point at (0,3) and move down 1 unit and 1 unit to the right. Plot a new point at (1,2). Connect the points with a dashed line. A dashed line is used for all inequalities which are not equal to. Finally, shade one side of the line. To determine which side, test a point not on the line. Shade the side which makes the inequality true.

y > -x + 3 test (0,0)

0 > -0 + 3

0 > 3 is false

Shade the side that does not have (0,0).

5 0

3 years ago

The sum of two numbers is equal to 11 and the difference is 19. What are the two numbers?

charle [14.2K]

$\bold{\huge{\pink{\underline{ Solution }}}}$

We have given in the question that, 

The sum of 2 numbers is equal to 11
The difference between two numbers is 19 .

$\bold{\underline{ To \: Find }}$

We have to find the value of x and y.

$\bold{\underline{ Let's \: Begin }}$

Let the two numbers be x and y

According to the question, 

$\sf{ x + y = 11......eq(1) }$

$\sf{ x - y = 19......eq(2) }$

Solving eq( 1 ) we get :- 

$\sf{ x + y = 11 }$

$\sf{ x = 11 - y ......eq(3 ) }$

Subsituting eq(3 ) in eq(2) :-

$\sf{ x - y = 19 }$

$\sf{ ( 11 - y) - y = 19 }$

$\sf{ 11 - y - y = 19 }$

$\sf{ 11 - 2y = 19 }$

$\sf{ - 2y = 19 - 11 }$

$\sf{ - 2y = 8}$

$\sf{ y = 8/(-2) }$

$\sf{ y = - 4 }$

$\sf{\red{Thus ,\: the\: value\: of \: y = -4}}$

Now, Subsitute the value of y in eq( 3 ) :-

$\sf{ x = 11 - y }$

$\sf{ x = 11 - (-4 ) }$

$\sf{ x = 11 + 4 }$

$\sf{ x = 15 }$

Hence, The value of x and y are 15 and (-4) .

5 0

2 years ago

The length of each side of a square is 3 inches more than the length of each side of a smaller square the sum of the areas of th

Svetradugi [14.3K]

The length of each side of a square is 3 in. more than the length of each side of a smaller square. The sum of the areas of the squares is 149 in. $^{2} .$ Find the lengths of the sides of the two squares.

4 0

3 years ago

I forgot how to do this lol

astraxan [27]

The equation of the line has the form: y = ax+b parallel to the line y = -2x + 7
=> a= -2
Passes through (4,1) => x=4, y=1
Substituting into the equation:
1= -2x(4) + b => b= 9
=> y= -2x + 9

6 0

2 years ago

Which explains how to find the radius of a circle whose equation is in the form x2 + y2 = z?

bezimeni [28]

Answer:

z would be your radius

Step-by-step explanation:

Equation: (x - h)² + (y - k)² = r²

Simply take √r² to find r, your radius.

7 0

3 years ago

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