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2 years ago

PLEASE ANSWER THIS RIGHT ASAP

Mathematics

2 answers:

Anastaziya [24]2 years ago

7 0

Answer:

x=9

Step-by-step explanation:

23=7/9(6x-36)+9

Distribute 7/9.

23=14/3x-28+9

Add.

23=14/3x-19

Add 19 to both sides of the equation.

42=14/3x

Divide 14/3 from both sides of the equation.

X=9

Hope this helps :)

alexdok [17]2 years ago

3 0

23= 7/9(6x-36)+9
<=>23= 14/3x-83/3+9
<=>43= 14/3x
<=> x= 9
Ok done. Thank to me :>

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What number is equivalent to 3/4 b-2/3 b =-9

Shtirlitz [24]

Hi,

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Answer: -7.42

Hope this helps.
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3 years ago

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2 years ago

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melamori03 [73]

Answer:

D 6

Step-by-step explanation:

Normally when I multiply mixed numbers, I change them to improper fractions first so that it is easier.

1 $\frac{2}{10}$ × 5 = $\frac{12}{10}$ × 5

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4 0

2 years ago

Read 2 more answers

Explain in easy terms, how the signs of the last terms of the two binomial factors of a trinomial are determined?

shutvik [7]

Explanation:

It helps to understand the process of multiplying the binomials. Consider the simple case ...

(x +a)(x +b)

The product is ...

(x +a)(x +b) = x² +(a+b)x + ab

If the constant term (ab) is negative, the signs of (a) and (b) are different.

If the constant term (ab) is positive, the signs of (a) and (b) will both match the sign of the coefficient of the linear term (a+b).

___

Of course, the sum (a+b) will have the sign of the (a) or (b) value with the largest magnitude, so when the signs of (a) and (b) are different, the factor with the largest magnitude will have the sign of (a+b), the x-coefficient.

Example:

x² -x -6

-6 tells you the factors will have different signs. -x tells you the one with the largest magnitude will be negative.

-6 = -6×1 = -3×2 = ... (other factor pairs have a negative factor with a smaller magnitude)

The sums of these factor pairs are -5 and -1. We want the factor pair that has a sum of -1, the coefficient of x in the trinomial.

x² -x -6 = (x -3)(x +2)

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3 years ago

What is the area of a triangle for one of the legs being 3in and the hypotenuse being 9in

elena55 [62]

The area of a triangle for one of the legs being 3 inches and the hypotenuse being 9 inches is 12.727 square inches

Solution:

Given that to find area of a triangle for one of the legs being 3 inches and the hypotenuse being 9 inches

From given information,

Let "c" = hypotenuse = 9 inches

Let "a" = length of one of the leg of triangle = 3 inches

To find: area of triangle

The area of triangle when hypotenuse and length of one side of triangle is given:

$A = \frac{1}{2} a \sqrt{c^2 - a^2}$

Where, "c" is the length of hypotenuse

"a" is the length of one side of triangle

Substituting the given values we get,

$A = \frac{1}{2} \times 3 \times \sqrt{9^2 - 3^2}$

$A =\frac{1}{2} \times 3 \times \sqrt{81-9}\\\\A =\frac{1}{2} \times 3 \times \sqrt{72}\\\\A =\frac{1}{2} \times 3 \times 8.48528\\\\A = \frac{1}{2} \times 25.45584\\\\A = 12.727$

Thus area of triangle is 12.727 square inches

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2 years ago