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Ivanshal [37]
3 years ago
12

5-2 ( 4a + 1 ) + 3a= 13 a. a= - 6/5 b. a=2 c. a= 2/3 d. a= -2

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
8 0

Answer:

a=2/3

Step-by-step explanation:

3(4a+1)+3a=13

12a+3+3a=13

15a+3=13

15a=10

a=2/3

slega [8]3 years ago
4 0

Answer:

-2

Step-by-step explanation:

Just plug -2 into the a spots and them do the math.

Hopes this helps.

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G(x) = 15 – 4x<br> h(x) = x +8<br> Write g(h(x)) as an expression in terms of 2.
Sergeu [11.5K]

For this case we have the following functions:

g (x) = 15-4x\\h (x) = x + 8

We must findg (h (x))when x = 2.

So:

g (h (x)) = 15-4 (x + 8) =

We apply distributive property to the terms within parentheses taking into account that:

- * + = -\\15-4x-32 =

We add similar terms taking into account that different signs are subtracted and the sign of the major is placed:

-17-4x

Thus, we have to:

g (h (x)) = - 17-4x

Then, with x = 2:

g (h (2)) = - 17-4 (2) = - 17-8 = -25

Equal signs are added and the same sign is placed.

Answer:

g (h (2)) = - 25

3 0
3 years ago
Find derivative of 2cosx+2cos2x
Zarrin [17]
Derivitive of cosx=-sinx
dy/dx sinx=cosx
and use chain rue

2cosx=-2sinx
2cos2x=-4sin2x
so
-2sinx-4sin2x id the deritivitve
7 0
3 years ago
There are 80 sixth graders at Wilson Middle School. Only 60% of the sixth graders will attend the morning assembly. How many six
Montano1993 [528]
You would do 80 * 6/10, which equals 48. Therefore there would be 48 sixth graders at the morning assembly. Hope this helps. Please rate, leave a thanks, and mark a brainliest answer(Not necessarily mine). Thanks, it really helps! :D
3 0
3 years ago
Read 2 more answers
Which relation does not represent a function? Question 2 options: A)  { (3, 0)  (0, 3) } B)  { (6, -2)  (5, -2) } C)  { (3, 4) 
Katyanochek1 [597]
C because the x's repeat with the 3 and 3. If the x's repeat it is not a function.

Hope that helps.
5 0
2 years ago
Read 2 more answers
Persons taking a​ 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a
mihalych1998 [28]

Answer:

y = 4.125x + 496.25

Step-by-step explanation:

Set the data up as points. Then deal with the points.

Givens

(30,620)

(70,785)

y2 = 785

y1 = 620

x2 = 70

x1 = 30

Formula

Slope = (y2 - y1) / (x2 - x1)

Solution

Slope = (785 - 620)/(70 - 30)

Slope = 165 / 40

Slope = 4.125

===================

Now you need the y intercept. Either one of the two given points will give you that.

y = 620

x = 30

m = 4.125

y = mx + b

620 = 4.125*30 + b

620 = 123.75 + b

620 - 123.75 + b

b = 496.25

5 0
3 years ago
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