MATHEMATICS HIGH SCHOOL

9x-7=-7 can you help

Answers

Answer 1

Answer:

Answer:

x=0

Step-by-step explanation:

9x-7=-7

Add 7 to each side

9x-7+7=-7+7

9x = 0

Divide each side by 9

9x/9 = 0/9

x = 0

Answer 2

Answer: 9x - 7 = -7
(Add 7 to the other side)
9x = -7 + 7
9x = 0
=> x = 0

(You can substitute x back to check for the answer)
9(0) - 7 = -7
0 - 7 = -7

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A survey found that 3 out of 100 people have red hair.On the basis of this survey, how many people in a group of 12,000 people are likely to have red hair?

A.4000

B.360

C.36

D.3

Answers

B is the answer because you cross multiple the two fractions.
$(3)/(100) (x)/(12000)$
3 *12,000=36,000
36,000/100=360

Answer:

THE ANSWER IS 360

please deal with it lol :)

good luck on the test

Solve 4^(2x) = 7^(x−1).

Answers

To solve for x in the given equation, use natural logarithms. Getting the natural logarithms of both sides, will be ln 4^(2x) = ln 7^(x-1). This is also equal to 2x ln 4 = (x-1) ln 7. Rearranging the equation, 2x/(x-1) = ln 7/ln 4. The right side is equal to 1.4037. Thus, the value of x is -2.3539.

It rained 0.6 inches on Monday on Tuesday it rained 0.2 inches less than Monday how much did it rain on Tuesday?

Answers

If it is 0.2 inches less, just subtract.

0.6 - 0.2 = 0.4

Answer:

0.4

Step-by-step explanation:

Ten less than double a number is the same as seven times the number. Find the number

Answers

Put in equation form, that problem would be 2n - 10 = 7n

Subtract 2n from each side and you get -10 = 5n

Divide both sides by 5 and you get -2 = n

So the answer would be -2 (negative two).

UnlimitedFactor by grouping (sometimes called the ac-method).
4x² + 3x - 10
First, choose a form with appropriate signs.
Then, fill in the blanks with numbers to be used for grouping.
Finally, show the factorization.
Form:
o
Ax? +
1 x + x - 10
Х
$
4x
+
x - l * - 10
4x?
[ x + x - 10
4x?
x - 10
Factorization: