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shepuryov [24]
2 years ago
12

Marvin earned $2 less than twice the amount he earned last

Mathematics
1 answer:
Evgen [1.6K]2 years ago
7 0

Answer:

2x-2 = 23

2x = 25

x=25/2 = 12.5

Step-by-step explanation:

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Can someone please help me out
Elis [28]
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6 0
3 years ago
Let f(x) = x^2 + 6x.
rusak2 [61]

Answer:

(A) The slope of secant line is 18.

(B) The slope of secant line is h+16.

Step-by-step explanation:

(A)

The given function is

f(x)=x^2+6x

At x=3,

f(3)=(3)^2+6(3)=27

At x=9,

f(9)=(9)^2+6(9)=135

The secant line joining (3,27) and (9,135). So, the slope of secant line is

m=\dfrac{y_2-y_1}{x_2-x_1}

m=\dfrac{135-27}{9-3}=18

The slope of secant line is 18.

(B)

The given function is

f(x)=x^2+6x

At x=5,

f(5)=(5)^2+6(5)=55

At x=5+h,

f(5+h)=(5+h)^2+6(5+h)=h^2 + 16 h + 55

The secant line joining (5,55) and (5+h,h^2 + 16 h + 55). So, the slope of secant line is

m=\dfrac{h^2 + 16 h + 55-55}{5+h-5}

m=\dfrac{h^2 + 16 h }{h}

m=h+16

The slope of secant line is h+16.

4 0
3 years ago
Hey !! Can someone please help me with this??
Katyanochek1 [597]

Answer:

8^2 and 4 x 4 x 4

Step-by-step explanation:

4 to the third power, is the same as 4 x 4 x 4.

This is then equal to 64.

8 squared is also equal to 64, making it also an answer.

None of the other ones work.

<em>Hope this helps and have a nice day!! :) :] :D</em>

7 0
2 years ago
Select the correct answer. For what value of x is sin x = cos 19º, where 0°&lt; x &lt; 90°? OA. 38° ° O B. 71° OC. 26° O D. 19°​
Lerok [7]

Answer:

x = 71°

Option B is correct answer.

Step-by-step explanation:

We need to find for what value of x is sin\: x = cos 19^{\circ}, where 0°< x < 90°?

Solving:

sin\: x = cos\: 19^{\circ}\\Finding \:cos\: 19^{\circ}=0.94551\\Putting\:value:\\sin\:x=0.94551\\Now\:taking\:sin\:inverse\\x=sin^{-1}(0.94551)\\x=71^{\circ}

So, we get x = 71°

Option B is correct answer.

5 0
2 years ago
How do I solve this problem?
kondor19780726 [428]

Answer:

Its A

Step-by-step explanation:

4/5 - 0.5     Convert the fraction to a decimal:-

= 0.8 - 0.5

= 0.3

6 0
3 years ago
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