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3 years ago

10

Please ASAP. Find the value of u.

1 answer:

shusha [124]3 years ago

5 0

Answer:

The answer is B 62

Step-by-step explanation:

I just divid 124 by 2

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Adam can do a job in 10 days, while brenda takes 15 days to do it. after brenda works alone for 3 days, adam and brenda work tog

Otrada [13]

= [1- (3/15)]/(1/10 + 1/15)
= (4/5)÷(1/6)
= 24/5
= 4 4/5

7 0

3 years ago

I just need to know the answer to B.

sleet_krkn [62]

Answer:

24%

Step-by-step explanation:

45 + 37 + 52 + 94 + 72 = 300

72/300 = 0.24 x 100

= 24%

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3 years ago

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GalinKa [24]

Answer:

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Step-by-step explanation:

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3 years ago

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C.

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C.

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3 years ago

Read 2 more answers

Solve the system of equations below by graphing. x^2-2x+y-3=0 x2+y=0 What is the solution rounded to the nearest hundredth? (–2.

Olin [163]

Answer:

$(-1.5,-2.25)$

Step-by-step explanation:

The first function is $x^2-2x+y-3=0$ .

We make y the subject of this function to obtain,

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

This is graph will open downwards because $a=-1\:$ .

At y-intercept of this graph, $x=0$ .

$\Rightarrow y=3+2(0)-(0)^2$

$\Rightarrow y=3$

The y-intercept is $(0,3)$ .

At x-intercept $y=0$ .

$0=3+2x-x^2$

$0=(x+1)(x-3)$

$\Rightarrow x=-1,x=3$ .

The x-intercepts are,

$(-1,0),(3,0)$

Also the vertex form of the function is,

$y=-(x-1)^2+4$ .

Therefore the vertex of the parabola is $(1,4)$ .

We plot all the points obtained and draw a smooth curve to obtain the curve as show in the diagram.

The second function is

$x^2+y=0$

$\Rightarrow y=-x^2$

This is the graph of the basic quadratic function $y=x^2$ that has been turned upside down.

This graph also has the vertex,y-intercept and x-intercept all at $(0,0)$ .

We now graph this too on the same graph sheet as the first one to obtain the blue graph as shown in the diagram.

These two graphs intersect at the point, $(-1.5,-2.25)$ .

Therefore the correct answer is B

3 0

3 years ago