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babymother [125]
3 years ago
8

Use the function below to find f(-2) f(x)=5^x A. 1/10 B. 1/25 C. -25 D. -10

Mathematics
1 answer:
Tems11 [23]3 years ago
3 0
f(-2)=5^{-2}=\dfrac{1}{25}\Rightarrow \text{B}
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Sin x cos x = -cos x<br> Find all angles that satisfy the equation below
n200080 [17]

Answer:

x=90^\circ,270^\circ

Step-by-step explanation:

sinxcosx=-cosx

sinxcosx+cosx=0

cosx(sinx+1)=0

cosx=0

x=90,270

sinx+1=0

sinx=-1

x=270

Therefore, the angles that satisfy the equation are x=90^\circ,270^\circ

8 0
3 years ago
X - y= 15<br> 4x+ 2y= 30
Ivahew [28]

HOPE IT WILL HELP U.......

8 0
3 years ago
Brooke purchased a new pair of tennis shoes that cost x dollars. Her brother, Benji, purchased a new pair of shoes that cost 20%
hoa [83]

Answer(s):

  • x + 0.2x
  • 1.2x

Solution:

<u>We know that:</u>

  • Brookie = x dollars
  • Benji = x + (20% × x)

<u>Solution:</u>

To see which expression has been used, we will need to simplify the expression.

  • Benji = x + (20% × x)
  • => Benji = x + (20/100 × x)
  • => Benji = x + (2/10 × x)
  • => Benji = x + (0.2 × x)
  • => Benji = x + (0.2x)
  • => Benji = x + 0.2x
  • => Benji = 1.2x

Looking at the options, Option A and Option B matches with our result.

Option A and B are correct.

8 0
2 years ago
Describe , Ella has 50 stacks of ten pennies in each stack.describe how to find how many pennies Ella has in all. For a 7 year o
Alex777 [14]
The Formula:Number of stacks multiplied by number of pennies in each stack
So 50x10=500
and talking money wise he has 5 dollars

6 0
3 years ago
Read 2 more answers
Geometry math question no Guessing and Please show work
Readme [11.4K]

Angle (8x)⁰ and angle (2x+60)⁰ are congruent angles as corresponding angles.

So,

8x = 2x+60

8x - 2x =60

6x = 60

x=10

Answer C. 10

3 0
4 years ago
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