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Karo-lina-s [1.5K]
3 years ago
9

How many solutions are in the equation below?

Mathematics
1 answer:
Georgia [21]3 years ago
4 0

Answer:

A. Infinitely many

Step-by-step explanation:

6x + 35+ 9x = 15 (x + 4) - 25

15x + 35 = 15 x + 60 -25

15x +35= 15x -35

0=0

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Which expression is equivalent to 2cos^2(x/2)- cos(x)?<br> Edge 2020
olchik [2.2K]

Given:

The expression is

2\cos^2(\dfrac{x}{2})-\cos (x)

To find:

The expression which is equivalent to the given expression.

Solution:

We have,

2\cos^2(\dfrac{x}{2})-\cos (x)

We know that,

\cos x=2\cos^2 (\dfrac{x}{2})-1

Using this formula, the given expression can be written as

2\cos^2(\dfrac{x}{2})-\left(2\cos^2(\dfrac{x}{2})-1\right)

=2\cos^2(\dfrac{x}{2})-2\cos^2(\dfrac{x}{2})+1

=1

Therefore, the given expression is equivalent to 1.

4 0
3 years ago
What divided by what equals 12
a_sh-v [17]

Many answers for this but 12/1=12

24/2=12

36/3=12

7 0
4 years ago
Read 2 more answers
Factor completely<br> m^2 — Зm — 18
lilavasa [31]

Answer:

(m + 3) (m - 6)

Step-by-step explanation:

Simplify the following:

m^2 - 3 m - 18

The factors of -18 that sum to -3 are 3 and -6. So, m^2 - 3 m - 18 = (m + 3) (m - 6):

Answer: |

| (m + 3) (m - 6)

4 0
3 years ago
What adds to 10 and multiplies to 11
yanalaym [24]
A number that can add up to 10 and multiplies to 11 is 1 since 11 is a prime number
4 0
3 years ago
Madison saves 40% of all that she earns for washing cars. So far she has saved $72 . How much has she earned in all?
UkoKoshka [18]

Answer:

40% = 72

divide both sides by 40 to find 1%

1% = 1.8

now multiply by 100 to find total amount earned

100% = 180

total earned $180

7 0
3 years ago
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