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3 years ago

Six times the sum of a number and 8 is 30. Find the number.

Mathematics

2 answers:

aleksklad [387]3 years ago

8 0

Answer:

-3.

Step-by-step explanation:

= 6(Sum+8) = 30

= 6Sum + 48 = 30

= 6Sum = -18

= Sum = -3

Hope this helps you :)

MrRissso [65]3 years ago

8 0

Answer:

the answer to this is 6(-3+8)=30

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The exponential function y= a(b)^x passes through the points (3,25) and (8,10). Which of the following is closest to the value o

Yuki888 [10]

If the exponential function $y=ab^x$ passes through the points (3,25) and (8,10), the value of b is 0.833

The given exponential equation is:

$y=ab^x$

The function passes through the points (3, 25) and (8, 10)

Substitute x = 3 and y = 25 into the function $y=ab^x$

$25=ab^3$ ............................(1)

Substitute x = 8 and y = 10 into the function $y=ab^x$

$10=ab^8$ .............................(2)

Divide equation (2) by equation (1)

$\frac{10}{25}=\frac{ab^8}{ab^3} \\\\0.4=b^5\\\\b=0.4^\frac{1}{5} \\\\b=0.4^{0.2}\\\\b=0.833$

Therefore, if the exponential function $y=ab^x$ passes through the points (3,25) and (8,10), the value of b is 0.833

Learn more on exponential functions here: brainly.com/question/12940982

6 0

2 years ago

What is negative 4/5 plus negative 3/8

xxMikexx [17]

I hope this helps you

4 0

3 years ago

Read 2 more answers

At the circus, 3 adult tickets and 4 child tickets cost $47, and 6 adult tickets and 2 child tickets cost $64. Which system of l

Artemon [7]

Answer:

The adult tickets cost $9 each. The child tickets cost $5 each.

X = $9 and Y = $5

Step-by-step explanation:

$9 x 6 = $54

$5 x 2 = $10

Add them and you get $64.

For the first one, do the same.

$9 x 3 = $27

$5 x 4 = $20

Add them and you get $47

8 0

3 years ago

At Lisa's printing Company LLC there are two kinds of printing presses model a witch can print 70 bucks per day and model B whic

erastovalidia [21]

Answer:

Model A is 9

Model B is 5

Step-by-step explanation:

At Lisa's printing Company LLC there are two kinds of printing presses model.

Let x = the number of model A printing press.

Let y = the number of the model B printing press.

model A can print 70 bucks per day and model B can print 55 bucks per day.

The total number of both models prints 905 bucks per day.

This means

70x + 55y = 905 - - - - - - - - -1

The company owns 14 total printing presses. This means

x + y = 14 - - - - - - - - - -2

x = 14-y

Put x = 14-y in equation 1

70(14-y) + 55y = 905

980 -70y + 55y = 905

-15y = 905-980= -75

y = -75 / -15= 5

x = 14-y = 14-5

= 9

5 0

3 years ago

Consider the line y=9x-5.

igomit [66]

Y = 9x - 5...the slope here is 9...a parallel line will have the same slope.

y = mx + b
slope(m) = 9
(5,-4)...x = 5 and y = -4
now we sub and solve for b, the y int
-4 = 9(5) + b
-4 = 45 + b
-4 - 45 = b
-49 = b
so ur parallel line is : y = 9x - 49

y = 9x - 5...slope is 9. A perpendicular line will have a negative reciprocal slope. All that means is " flip " the slope and change the sign. So the slope we need is -1/9.

y = mx + b
slope(m) = -1/9
(5,-4)...x = 5 and y = -4
now we sub and solve for b, the y int
-4 = -1/9(5) + b
-4 = -5/9 + b
-4 + 5/9 = b
-36/9 + 5/9 = b
- 31/9 = b

so ur perpendicular line is : y = -1/9x - 31/9

6 0

3 years ago