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krek1111 [17]
3 years ago
14

Solve the following equation: -6(r + 38) = -8.

Mathematics
2 answers:
Vladimir [108]3 years ago
7 0

Answer:

-110/3

Step-by-step explanation:

-6(r+38)=-8

-6r-228=-8

-6r=-8+228

-6r=220

r=220/-6

r=-110/3

kakasveta [241]3 years ago
7 0

First open the parentheses: -6r - 228 = -8

Add 228 on both sides: -6r = 220

Make 6r positive: 6r = -220

Divide by 6: r = -(220/6)

Simplify: r = -(110/3)

r = -(110/3)

r as a decimal: 36.6666667

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A function follows the rule y = -75 - 5 x . When the function's output is 25, the equation is 25 = -75 - 5 x .
Alex787 [66]

Answer:

The function's input = x = -20

Step-by-step explanation:

Given the function

y = -75 - 5x

Given that the output = y = 25

substituting the value y=25 and solve to find the input 'x'

25 = -75 - 5x

5x = -75-25

5x = -100

Divide bothe side by 5

x = -20

Thus, the function's input = x = -20

5 0
4 years ago
What does a=? b=? Angle B=?
Kobotan [32]

Answer:

If you were solving the right triangle, it would be:

m∠A = 46°

m∠B = 44°

m∠C = 90°

AB = 32

BC ≈ 23

AC ≈ 24

Step-by-step explanation:

To solve this right triangle, you can use trigonometric ratios to solve for the sides. To find the angle measures:

m∠A = 46° (given)

m∠B = x

m∠C = 90° (given)

180 - (46 + 90) = x

180 - 136 = x

44 = x

m∠B = 44°

To find the side measures, you can use tangent, sine, cosine, and the Pythagorean Theorem.

Recall that:

tangent = opposite side/adjacent side

sine = opposite side/hypotenuse

cosine = adjacent side/hypotenuse

So:

sin46 = BC/32

BC = 32 (sin46)

BC ≈ 23

tan46 = BC/AC

AC = BC/tan46

AC = (23.01887361...) (tan46)

AC ≈ 24

5 0
3 years ago
Hello i need help solving the following inequality X (X + 3) ⩽ X (2X + 5) thanks
igor_vitrenko [27]

Answer:

-2 ⩽ x

Step-by-step explanation:

x(x + 3) ⩽ x (2x + 5) divide both sides of tge inequality with x

x + 3 ⩽ 2x + 5 subtract x from both sides

3 ⩽ x + 5

-2 ⩽ x

3 0
3 years ago
Help me please!!! I give more points and brainliast please help me!
fiasKO [112]

Hey there!!

Fill in the blanks :-

⇒ First graph the line. Locate the <u>value of x </u>on the x-axis. Draw a vertical line from <u>point plotted on the x-axis </u>to the graph of the function and a horizontal line segment from the graph of the function to the y-axis.

<em>Find the value of f(x) when x is -2. </em>

f(x) = \frac{3}{2}x-4

Remember :- <u><em>f(x) is basically the y-value. It is just denoted as _f(x), it stands for function of x. Which means, the value of y, depends upon the value of x or the function of x. </em></u>

Given : x = - 2

Plugging in the values :

... f(-2) = \frac{3*(-2)}{2}-4

... f(-2) = \frac{-3}{1} - 4

... f(-2) = -7

The last fill in the blank :

The value of y on the y-axis is the value of the function. Therefore, the value of f(x) is <u>-7 </u>when x is -2.

Hope it helps!!



7 0
4 years ago
Divide 5.6 by 0.7 the quotient is what ?
rjkz [21]
The answer for this is 8.
7 0
3 years ago
Read 2 more answers
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