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Neporo4naja [7]

3 years ago

9

demarcus has at least $8 more than his older sister. His older sister had $4. Which of the following inequalities could be used

to find how much money m demarcus has?

1 answer:

chubhunter [2.5K]3 years ago

6 0

Where d=Demarcus' money:

4 ≤ d+8

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A construction company wants to build an auditorium on a trapezium shaped plot measuring 410m2. One of the parallel sides of the

Assoli18 [71]

Answer:

other parallel side is 23m

Step-by-step explanation:

Let's assume other parallel sides as 'x'

One of the parallel sides of the trapezium plot measure 18m

so, y=18

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so, h=20

now, we can use area of trapezium formula

$A=\frac{1}{2}\times h \times (x+y)$

now, we can plug values

$A=\frac{1}{2}\times 20 \times (x+18)$

we can set A=410

and then we can solve for x

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4 0

3 years ago

Solve this quadratic equation by completing the square. x2 + 10x = 26

Misha Larkins [42]

  x² + 10x = 26
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- 5 - 5
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Read 2 more answers

one maid can clean the house three times faster than another. Working together they can clean the entire house in 3 hours. How l

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<span>Faster maid DATA:
time = x hr/job ; rate = 1/x job/jhr
Slower maid DATA:
time = 3x hr/job ; rate = 1/3x job/hr
Together DATA:
time = 3 hr/job ; rate = 1/3 job/hr
Equation:
rate + rate = together rate
1/x + 1/3x = 1/3
Multiply thru by 3x to get:
3 + 1 = x
x = 4 hrs (time for the faster maid to do the job)</span>

7 0

3 years ago