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3 years ago

Solve for n

Mathematics

2 answers:

slava [35]3 years ago

8 0

You put 63 over 9, basically dividing 63 by 9 which gives you 7, so n = 7

Luden [163]3 years ago

3 0

Well, what you need to figure out is what times 9 is 63. That would be 7. So n=7 :)

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The difference of twenty-one and eight times a number n is thiry-five

nalin [4]

Answer:

n=7

Step-by-step explanation:

difference means subtraction so:

8n - 21= 35

8n=35+21

8n= 56

n= 56÷8

n=7

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3 years ago

What is the surface area of the pyramid? 12ft 10ft 10ft

jonny [76]

Answer:

2h x (l+b)

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3 years ago

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Unsure of what i need to do for question 1 and 2

AfilCa [17]

Answer:

f(1)=0; f(0)= -2; f(-1)=(-4); f(2)=2

Step-by-step explanation:

For the first four questions, f(1) means that x= 1, so you need to look at the graph, find the point where x= 1, and find the corresponding y value which is 0. You do this same process for each of the rest.

For 5 and 6: when they say f(x) = some value, this is the y value. So look at the graph: when y = 4, you can see that x = 3. When y = -6, you can see that x= -2.

8 0

3 years ago

There are 3 times as many pears are oranges. If a group of children receive 5 oranges each,there will be no left over.If the sam

lozanna [386]

There are 15 oranges

Solution:

Let "x" be the number of oranges

Let "y" be the number of pears

Let "c" be the number of children

There are 3 times as many pears are oranges

Number of pears = 3 times the number of oranges

y = 3x -------- eqn 1

If a group of children receive 5 oranges each, there will be no left over

So, "c" children receives 5 oranges each, there will be no left over

number of oranges = 5(number of children)

x = 5c ------- eqn 2

If the same group of children receive 8 oranges each, there will be 21 pears left over

number of pears = 8 oranges(number of children) + 21

y = 8c + 21

Substitute eqn 1

3x = 8c + 21 ---- eqn 3

Substitute eqn 2

3(5c) = 8c + 21

15c - 8c = 21

7c = 21

c = 3

Substitute c = 3 in eqn 2

x = 5(3)

x = 15

Thus there are 15 oranges

6 0

3 years ago

Read 2 more answers

Which is the equation for the line perpendicular to y = –x + 11 and containing P(–2, 3)? a. y – 2 = –(x – 3) b. y = –x+ 4 c. y =

Vadim26 [7]

Perpendicular has slope that multiplies to -1
y=mx+b
m=slope
y=-1x+11
-1 times what=-1?
what=1

y=x+b
find b
given
(-2,3)
(x,y)
inpus -2 for x and 3 for y
solve for b
3=1(-2)+b
3=-2+b
add 2 to both sides
5=b

y=x+5 is equation
not listed, but the choices are all wrong

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3 years ago