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2 years ago

At which point would the graphs of the equations below intersect?

Mathematics

1 answer:

Serhud [2]2 years ago

3 0

Answer:

can't explain without you arranging your mathematical expression

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Melissa has 14 reports to file. If each report takes an average of 1 hour and 15 minutes to file, how long will it take her to f

ivolga24 [154]

0.7 * 14 = 9.8
60 + 15 = 75 minutes
9.8 * 75 = 735 minutes
735 ÷ 60 =
12 hours and 15 minutes

8 0

3 years ago

I wanna know what wil be done lastly

NeTakaya

Wheres the question?

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3 years ago

Solve the equation b/4+2=-1.<br> b=

Zolol [24]

Answer:

$\frac{b}{4} + 2 = - 1$

$\frac{b}{4} = - 1 - 2$

$\frac{b}{4 } = - 3$

$b = - 3 \times 4$

$b = - 12$

hope this helps you!!

4 0

3 years ago

Tim has a cat that cost $25, which is 20% more

Iteru [2.4K]

$[Hello,BrainlyUser]$

Answer:

$20

Step-by-step explanation:

20% More = Markup

20% = .20

$25 * .20 = 5 ( Markup Price)

$25 - 5 = $20

Hence, last month the cost of the cat was $20.

[CloudBreeze]

7 0

3 years ago

a rectangle is 8cm longer then it is wide, and it’s area is 153cm^2. Find the dimensions of the rectangle.

Stolb23 [73]

Answer:

Width of 9cm and length of 17cm.

Step-by-step explanation:

To calculate an area of a rectangle, use the formula A=l*w. We know the length is 8cm longer than the width. So l = 8 + w. So the area is A= (8+w)*w.

We also know the area is 153. Substitute this value for A and solve.

$153 = (8+w)(w)\\153 = 8w+w^2\\w^2+8w-153 = 0$

To solve the quadratic, use the quadratic formula:

$\frac{-b+/-\sqrt{b^2-4ac} }{2a}$

Here a=1, b=8 and c=-153.

$w=\frac{-b+/-\sqrt{b^2-4ac} }{2a} \\w=\frac{-8+/-\sqrt{8^2-4(1)(-153)} }{2(1)} \\w=\frac{-8+/-\sqrt{64+612} }{2} \\w=\frac{-8+/-\sqrt{676} }{2} \\w=\frac{-8+/-26 }{2} \\w=\frac{-8+26 }{2}=\frac{18}{2}=9 \\and\\w=\frac{-8-26 }{2} =\frac{-34}{2}=-17$

Since w=9 or w=-17, substitute this value for w in l= 8+w to find l.

l = 8+9 = 17

l=8+-17 = -9

Since length cannot be positive, it must be l=17 and w=9.

8 0

3 years ago