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Umnica [9.8K]
3 years ago
13

9x - 5 = 2x + 8 PLSSSS Help. Algebra 1

Mathematics
2 answers:
drek231 [11]3 years ago
4 0

Step-by-step explanation:

9x - 2x = 8 + 5

7x = 13

x =13÷7

x = 1.8571

approximately = 1.86

I think this is it

wel3 years ago
4 0

Answer:

x = 13/7 or 1 and 6/7

Step-by-step explanation:

9x - 5 = 2x + 8

+5               +5

9x = 2x + 13

-2x    -2x

7x = 13

---   -----

7     7

x = 13/7 or 1 and 6/7

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Let h(x) = -4x + 2. h(-4) =
taurus [48]

Answer:

h(-4) =18

Step-by-step explanation:

h(x) = -4x + 2

Let x = -4

h(-4) = -4*-4 + 2

        =16+2

         =18

4 0
3 years ago
What is the exponential function that best models the number of gnats the scientists have gathered after the number of hours lis
Serjik [45]

Answer:

Option A

f(x) = 12.5(1.6)^x

Step-by-step explanation:

The number of gnats the scientists have gathered

At 0 hours, they gathered 12 gnats.

Checking all the options, applying x = 0 makes the index part become 1 (Anything raised to the power zero is 1).

So, we have the following functions

f(x) = 12.5

f(x) = 12.6

f(x) = 6.2

f(x) = 1.6

This has reduced our work, as we can screen out options C and D, they are too far from 12. This leaves us with option A and B.

At 1 hour, they gathered 20 gnats.

Checking options A and B

A. f(x) = 12.5(1.6)

= 20

B. f(x) = 12.6(6.2)

By inspection, 12 × 6 is already 72,

12.6 × 6.2 will be more.

By these, we can conclude that f(x) = 12.5(1.6)^x has the best models the number of gnats the scientists have gathered after the number of hours listed in the given table.

5 0
3 years ago
Prime number between 60 and 80 with the 10’s digit being one less than the 1st digit
erastova [34]

It would be 89.

You can also just look up a list of prime numbers online.

8 0
3 years ago
Can someone please help I will give brainliest and please if you don’t know the answer don’t put anything due at 12:00
hjlf

Answer:

Answer: (7,-2)

Step-by-step explanation:

Look at the formula

1) (x – h)^2 + (y – k)^2 = r2

the center is described by (h,k)

now look at

(x – 7)^2 + (y +2)^2 = 25

here h=7

but k= -2 because is (y+2) =(y-(-2))

4 0
3 years ago
Financial planners recommend that families save about 5% of their take-home pay. Ed and Sherrie save $90 each pay period from th
Ratling [72]

Answer:

Ed and Sheerie save 7.5%.

Step-by-step explanation:

This question can be solved using a rule of three.

Ed and Sherrie save $90 each pay period from their combined paychecks, which total $1200. What percent do Ed and Sherrie save?

How much of $1200 is $90? $1200 is 100% = 1, $90 = x. So

$1200 - 1

$90 - x

1200x = 90

x = \frac{90}{1200}

x = 0.075

Ed and Sheerie save 7.5%.

7 0
3 years ago
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