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Nookie1986 [14]
4 years ago
7

5x + 8 - 7x = -4x + 1

Mathematics
2 answers:
irakobra [83]4 years ago
6 0

Step-by-step explanation:

5x+8-7x=4x+1

5x+7x-4x=8+1

8x=9

VMariaS [17]4 years ago
3 0

Answer:

awnser

Step-by-step explanation:

i chosed 1 awnser

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The sum of 1/3 of a number and 12
muminat

Start by assigning a variable name to the "number" -- call it x.

Now write out what they say:

"The product of 1/3 and the sum of a number and 3" -- that's 1/3 times x + 3, or (1/3)(x + 3) or (x + 3) / 3

It's "between negative one and five"

So that means:

-1 < (x + 3) / 3 < 5

So now solve this inequality.  First multiply everything by 3.

-3 < x + 3 < 15

Subtract 3 from all the terms:

-6 < x < 12

So the answer is, all numbers between -6 and 12

7 0
3 years ago
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Please help me fast!!! Kevin made chili for a football party. He started making the chili at 1:00 P.M. It took 45 minutes to pre
iVinArrow [24]

Answer:

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3 years ago
5. The mapping f: xax² + bx + c defined on the set of real numbers is such that f(0) = -4,f(1)-1 and/(-1)= -5. Find a, b and c.
Marrrta [24]

It looks like you're saying

f(x) = ax^2 + bx + c

and you're asked to find a,b,c given f(0)=-4, f(1)=-1, and f(-1)=-5.

Evaluate f at the three given points:

x=0 \implies f(0) = \boxed{c = -4}

x=1 \implies f(1) = -1 = a + b + c \implies a+b = 3

x=-1 \implies f(-1) = -5 = a - b + c \implies a - b = -1

(a+b) + (a-b) = 3 + (-1) \implies 2a = 2 \implies \boxed{a=2}

a-b = -1 \implies \boxed{b=3}

and the mapping is f(x) = 2x^2 + 3x - 4.

5 0
2 years ago
The thied-grade class is going on a field trip by bus to the museum.The bus leaves the school at 9:45 A.M. The bus ride takes 47
erica [24]
10:32 A:M in 15 minutes it will be 10:00 and then 32 minutes remaining
5 0
3 years ago
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I do not understand this at all!
IceJOKER [234]

Answer:

∠1 = 51°   ∠2 = 39°

Step-by-step explanation:

ok since the picture is a right angle put it equal to 90

like this:

3x + x + 22 =90

4x + 22 = 90

4x = 68

x = 17

now we plug it in:

3(17)= 51°

(17) + 22 = 39°

*a straight line is equal to 180, a right angle is 90

does that make sense?

7 0
3 years ago
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