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2 years ago

H(x)=4x-2 find h(-9)

Mathematics

1 answer:

ki77a [65]2 years ago

7 0

Answer:

Step-by-step explanation:

H(x) = 4x-2

H(-9) = 4(9)-2

H(-9) = 36 -2

H(-9) = 34

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If t varies 1/s and t=2 when s=60 find the relationship between t and s, b, find the value of t when s=90 c, find s when t=2,1/2

suter [353]

Answer:

$t = k \frac{1}{s} \\ 2 = k. \frac{1}{60} \\ k = 120 \\ k \: \: is \: constant \: of \: variation \\ relationship \: is \\ t = \frac{120}{s} . \\ when \: s \: = 90 \\ t = \frac{120}{90} \\ t = \frac{4}{3} \\ when \: t = 2 \frac{1}{2} \\ s = \frac{120}{2 \frac{1}{2} } \\ s = 48$

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2 years ago

If a seamstress is paid 7.85 per hour and works 18.75 hours in one week how much is she paid for that week

umka21 [38]

$18.75 hours at $7.85 pet hour is exactly 1471875, moving the decimal 4 places to the left and round to the nearest penny is
$147.1875 Or $147.19

4 0

3 years ago

What's -3+(0+9) ?? I need to know by tonight

Crank

The answer is 6.
To do this, remember PEMDAS?
You would first have to add what is in the parenthesis THEN do -3 + 9 to get 6.

6 0

2 years ago

Read 2 more answers

If 2x + 5 = 82, then 12x = ? A 5 B 10 C 15 D 20

KengaRu [80]

Answer:

2x= 38.5

Step-by-step explanation:

I'm not sure where u got 12x but 2 x = 38.5:

2x + 5 =82

subtract 5 for 82

2x = 77

77 divided by 2 is 38.5

x = 38.5

hope this helps :)

5 0

3 years ago

The answer is A right?

Sophie [7]

Answer:

C. 42

Step-by-step explanation:

PEMDAS

1. Parentheses: (4 + 2) = 6

6² + 3 • 2

2. Exponents: 6² = 36

36 + 3 • 2

3. Multiplication/Division: 3 • 2 = 6

36 + 6

4. Addition/Subtraction: 36 + 6 = 42

4 0

3 years ago