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3 years ago

How many solutions does this equation have? -3n = -4n + 7

Mathematics

2 answers:

ahrayia [7]3 years ago

7 0

Answer:

Step-by-step explanation:

my soulstinos were Solution 1)

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Solution 2)

−

The solution is:

−

and

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Katarina [22]3 years ago

5 0

Answer:

just one: 7 you isolate the numbers by doing -3n + 4n = 7, and u get n = 7

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WHat is 75x6-8+7-60+9/6x 1-8+8x0=?

777dan777 [17]

It’ll be 0 cuz like u timings it by 0

4 0

3 years ago

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9x/2<=6(x-3)+3x<br> solve using that method in picture! <br><br> helppppp <br> please. ASAP

astraxan [27]

Answer:

x $\geq$ 4

Step-by-step explanation:

9x/2 $\leq$ 6(x - 3) + 3x

9x/2 $\leq$ 6x - 18 + 3x

9x/2 $\leq$ 9x - 18

mltiply both sides by 2

9x $\leq$ 18x - 36

subtract 18x from both sides

-9x $\leq$ -36

divide both sides by -9

flip the side when dividing by a negative

x $\geq$ 4

4 0

3 years ago

Select the correct answer.

stich3 [128]

Answer:

Option C

Step-by-step explanation:

f(1) = -8

f(2) = -5/2×-8 = -20

f(3) = -5/2×-20 = -125

So option C is the answer

4 0

3 years ago

Read 2 more answers

Peter is renting two kinds of rafts for a vacation company. One type seats 3

Nady [450]

Answer:

Peter rents 6 of the rafts seating 3 people, and 7 of the rafts seating 5 people.

Step-by-step explanation:

Let $x$ denote the number of rafts seating 3 people and $y$ the number of rafts seating 5 people. The total number of rafts is 13, so $x+y=13$ . We can also assume that every raft is filled to the brim (it isn't stated explicitly though, but it's probably the intention of the question maker), so $3x+5y=53$ .

It's always a good idea to put these equations under each other:

$\left \{ {{x+y = 13} \atop {3x+5y=53}} \right.$

We can subtract the first equation three times from the second one to obtain $(3x+5y)-3(x+y) = 53 - 3(13)\\3x-3x + 5y - 3y = 53 - 39\\2y = 14\\y=\frac{14}{2} = 7$

Now, substitute this found value for $y$ into $x+y = 13$ and we see that $x=6$ . We are now done: Peter rents 6 of the rafts seating 3 people, and 7 of the rafts seating 5 people.

5 0

3 years ago

I am confused about how to do this problem and I don't think it should be hard, but I just don't know how to approach it, so if

solniwko [45]

Answer:

a) (0.555, 0) and (6, 0)

b) r = -3 and r = 1.8

c) (0.875, 0.676)

d) (0, 1.235)

Step-by-step explanation:

Set each term in the numerator and denominator equal to 0 and find r.

In the numerator:

r = 7/8, 5/9, or 6

In the denominator:

r = 9/5, 7/8, or -3

Zeros in the numerator that aren't in the denominator are r-intercepts.

Zeros in the denominator that aren't in the numerator are vertical asymptotes.

Zeros in both the numerator and the denominator are holes.

a) (0.555, 0) and (6, 0)

b) r = -3 and r = 1.8

c) Evaluate m(r) at r = 7/8. To do that, first divide out the common term (-8r + 7) from the numerator and denominator.

m(r) = (-9r+5)² (r−6)² / ( (-5r+9)² (r+3)² )

m(⅞) = (-9×⅞+5)² (⅞−6)² / ( (-5×⅞+9)² (⅞+3)² )

m(⅞) = (-23/8)² (-41/8)² / ( (37/8)² (31/8)² )

m(⅞) = (-23)² (-41)² / ( (37)² (31)² )

m(⅞) = 0.676

The hole is at (0.875, 0.676).

d) Evaluate m(r) at r = 0.

m(0) = (-9×0+5)² (0−6)² / ( (-5×0+9)² (0+3)² )

m(0) = (5)² (-6)² / ( (9)² (3)² )

m(0) = 1.235

The m(r)-intercept is (0, 1.235).

5 0

3 years ago