3 years ago

Help me the blank algebraic please

Mathematics

1 answer:

Klio2033 [76]3 years ago

5 0

Answers for problems 21-23

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2(3 + x) – x(7 + x)<br> if x = 3<br> Pls someone answer and work

diamong [38]

Answer:

the answer would be -18

Step-by-step explanation:

3+3=6 2×6=12. 7+3=10 3×10=30 12-30= -18

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Please answer 9th grade math

sergeinik [125]

Not a function pretty sure

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The number 879 rounded to the nearest hundred would be 800.

Inessa [10]

It would be false because 879 will be rounded up to 880 or 900.

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4 years ago

Kaya's family spends \$ 105$105 to rent a boat for 77 days. The total cost, cc, of the boat rental is proportional to the number

Anastaziya [24]

$c = 15d$

Step-by-step explanation:

find the value of the constant of proportionality k

$k = \frac{v}{d}$

c =total cost

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2 years ago

What is the slope-intercept form of the Function described by this table?

Andre45 [30]

Y= kx+b, k-slope, b-intercept
so
2=k*1+b
7=k*2+b
12=k*3+b
17=k*4+b

solve these two equation:
2=k*1+b
7=k*2+b
second minus first is 7-2=2k-k+b-b
5=k,
so we know k=5
put this in any equation 2=5*1+b
b=2-5
b=-3

check this in
12=5*3-3 - right
17=5*4-3 - right

Answer: y=5x-3

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3 years ago