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d1i1m1o1n [39]
4 years ago
12

I need help with this too

Mathematics
1 answer:
DiKsa [7]4 years ago
7 0

Answer:

Angle HFG + angle ACB = 90°

Angle EFC = Angle DFG

Angle HFG + angle DFH = angle DFG

= 90°

The answer is B Angle DFH = angle ACB

Hope this helps!

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A ladder that is 32 ft long leans against a building. The angle of Elevation of the Ladder is 70 degrees
netineya [11]

Answer:

B. 30 ft

Step-by-step explanation:

The ladder is 32 ft long

The angle of elevation of the ladder is 70°

The height (h) of the top of the ladder to the ground is what we are to find.

\frac{h}{32} = sin 70°

h = 32 × sin 70° = 30.07016387 or 30 ft (rounded off to nearest feet)

3 0
3 years ago
The mean of seven numbers is 12.0. When one new number is added , the average of eight numbers becomes 12.5 . What is the new nu
Gnesinka [82]
(12 * 7 + n)8=12.5
(12 * 7 + n)= 100
N= 16. The new number will be 16. Hope this helps. :)
8 0
4 years ago
Read 2 more answers
A system of equations consists of two lines. One line passes through (-1, 3) and (0, 1). The other line passes through (1, 4) an
Setler79 [48]
The equation of the line in its generic form is:
 y = mx + b
 Where,
 m = (y2-y1) / (x2-x1)

 For (-1, 3) and (0, 1):
 We look for the value of m:
 m = (1-3) / (0 - (- 1))
 m = (- 2) / (0 + 1)
 m = -2
 We look for the value of b:
 1 = m (0) + b
 b = 1
 The line is:
 y = -2x + 1

 For (1, 4) and (0, 2):
 
We look for the value of m:
 m = (2-4) / (0-1)
 m = (- 2) / (- 1)
 m = 2
 We look for the value of b:
 2 = m (0) + b
 b = 2
 The line is:
 y = 2x + 2

 The system of equations is:
 y = -2x + 1
 y = 2x + 2
 
 Answer:
 
the system has one solution
4 0
3 years ago
Which is the better unit price: $1.99 for a 3-ounce bottle or $2.49 for a 4-ounce bottle?
notka56 [123]

Answer:

2.49

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which of the following is true about the function y=4*3^x
Trava [24]

Answer:

option-c

Step-by-step explanation:

we are given

y=4(3)^x

we will verify each options

option-A:

we can see that exponent is over 3

and it is positive and greater than 1

so, this function is increasing

so, this is FALSE

option-C:

At x=1:

y=4(3)^1

y=12

At x=2:

y=4(3)^2

y=36

\frac{y_2}{y_1} =\frac{36}{12}

\frac{y_2}{y_1} =3

y_2=3y_1

So, it is getting tripled

so, this is TRUE

option-b:

we can plug x=0

y=4(3)^0

y=4

so, this is FALSE

option-d:

we can plug x=1

y=4(3)^1

y=12

so, this is FALSE

5 0
3 years ago
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