Help ASAP!! I need help fast!!!!

Answers

Answer 1

Answer: the answer to this question is : 8^2/4 -6 = 10

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Solve for b: -3b-6=18

Answers

Answer:

b= -8

Step-by-step explanation:

Answer:

-8

Step-by-step explanation:

-3b - 6 = 18

+6 +6

-3b = 24

-3b/-3 = 24/-3

b = -8

Sqrt(2−7x) -sqrt(x 3) =3

Answers

$(a+b)^2=a^2+2ab+b^2 \n \n √(2-7x) - √(x+3) =3 \n (√(2-7x))^2 =(3 + √(x+3))^2\n2-7x=9+6√(x+3)+x+3 \n 2-7x-9-x-3=6√(x+3) \n (-8x-10)^2=(6√(x+3))^2 \n64x^2+160x+100=36(x+3) \n 64x^2+160x+100=36x+108\n 64x^2+160x-36x+100-108=0 \n 64x^2+`124x-8=0 \n 4( 16x^(2) +31x-2)=0 \n$
$16x^(2) +31x-2=0 \n(x-2)(16x-1)=0 \n x+2=0 \n x=-2 \n 16x-1=0 \n x= (1)/(16)$

$\sqrt{2-7 \cdot(1)/(16) } - \sqrt{(1)/(16) +3} \neq 3 \n x=-2$

Absolute value of 5.23

Answers

The absolute value of any positive value is just the value itself so it would still be 5.23

Which of these rational numbers is also an integer?

Answers

Answer:

6/3

Step-by-step explanation:

An integer is a whole number, that is not a fraction. All of the numbers are fractions, but if you simplify them, you see that 6/3=2. 2 is a whole number, and therefore an integer.

Answer:

6/3

Step-by-step explanation:

If AC = 40, find the length of JK.

Answers

Answer:

JK = 24

Step-by-step explanation:

Δ BKJ and Δ BCA are similar triangles and ratios of corresponding sides are equal, that is

$(JK)/(AC)$ = $(BK)/(BC)$ , substitute values

$(JK)/(40)$ = $(3)/(5)$ ( cross- multiply )

5JK = 120 ( divide both sides by 5 )

JK = 24

the triangles are all similar, because they have proportional sides and equal angles.

if you assume the smallest, equal part of side to be x

the biggest triangle has "5 parts" so BC=5x and BK has 3 parts so BK=3x .

since they're similar, ratio of their corresponding sides is constant or equal.

${BK\over BC}={JK \over AC}$

BK/BC=3/5

and AC=40

so JK = 40*3/5=24

Each student wrote a two step equation. peter wrote the equation 4x - 2 =10, and andres wrote the equation 16x - 8 = 40. the teacher looked at their equations and asked them to compare them. describe one way in which the equations are similar

Answers

4x-2=10
answer is 3
16x-8=40
answer is 2
they are all even numbers. it is all divisible.by 4
I think

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