Is -4(x-3) equivalent to -4x+12?

Answers

Answer 1

Answer: $-4(x-3)=-4\cdot x+(-4)\cdot(-3)=-4x+12$

YES

Answer 2

Answer: $-4(x-3)=-4x-4*(-3)=-4x+12 \hbox { So, the fraction are equivalent}$

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Find the result when 28 is decreased by 25%

Answers

Answer: 21

Step-by-step explanation:

28-(28/100)*25=28-7=21

28•.25%=7
28-7=21
message me for questions!!

4x^2 +28x -32 =0 solve this problem?

Answers

$4x^2+28x-32=0 \ \ \ |:4 \n\n x^2+7x-8=0 \n\n x^2+8x-x-8=0 \n\n x(x+8)-(x+8)=0 \n\n (x+8)(x-1)=0 \n\n \nx+8=0 \n\n \boxed{x=-8} \n\n\n x-1=0 \n\n \boxed{x=1} \n\n\n \boxed{\boxed{S=\{-8;1 \}}}$

we know that if xy=0 then x or/and y=0

4x^2+28x-32=0
factor out the 4
4(x^2+7-8)=0

factor out the x^2+7-8
we must find out what two numbers multiply to get -8 and add to get 7
the numbers are 8 and -1

so 4[(x-1)(x+8)]=0

we know that if exg 4y=0 then y=0
so
therefor
(x-1)(x+8)=0
set each to zero
x-1=0
x=1
x+8=0
x=-8

x could be 1 or -8

I don't understand can someone help please

Answers

In a whole hour, a half-hour goes by, two times.

In the first half-hour, 7/8 of a gallon leaks out of the pool.
In the second half-hour, another 7/8 of a gallon leaks out of the pool.

In the whole hour, (7/8 gallon + 7/8 gallon) leaks from the pool.

Can you add those two fractions, and make a single number ?

What can you say about the marked angles in these parallelogram?A Opposite angles of a parallelogram are congruent. ( the same measure)
B Consecutive angles of a parallelogram are supplementary (measure add to 180)
C consecutive angles of a parallelogram are congruent. (The same measure)
D Opposite angles of a parallelogram are supplementary (measure add to 180)

Please need help on this don’t understand this one

Answers

Answer: A and B both are correct statements.

Step-by-step explanation:

Let ABCD is a parallelogram then its properties are as follows:-

1. Opposite angles and sides of parallelogram are always congruent.

i.e.AB=CD and AD=BC and ∠A=∠C and ∠B=∠D

2.Consecutive angles are supplementary.

i.e. ∠A+∠B=180° and ∠B+∠C=180°

3. Its diagonals bisect each other.

4. The sum of all the angles is 360°.

Is 70% of 80 the same as 80% of 70

Answers

yes because 70*.8=56 and 80*.7=56

No, because 80 and 70 are different numbers so there is going to be a different answer.

A right triangle has an area of 50 square inches. If the triangle is an isosceles triangle, what are the lengths of the legs of the triangle?

Answers

area=1/2bh
50=1/2bh
times 2
100=bh
solve for b
divide by h
100/h=b
we hav to make a drawing
since it is isocoleese
h=b
100=b^2=h^2
h=b=10
answer is 10 inches

10in and 10in, because 10x10=100, and 100/2=50

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