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Evgen [1.6K]
3 years ago
13

D. 350.00

Mathematics
2 answers:
Maksim231197 [3]3 years ago
8 0
The answer is B i believe
34kurt3 years ago
5 0

Answer:

B. 7 hours

Step-by-step explanation:

Since the question states "at this rate" , this could be worked out by using simple proportion.

120miles = 3hours

280miles = ?

(280x3)/120 = 7 hours

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Help me with these 3 and explain too thank you :))
xz_007 [3.2K]

Answer:

1) 25

2) 2

3) f(g(1)) = 42

Step-by-step explanation:

1) Given that f(x) = 4x^2  + 9

If x = -2

f(-2) = 4(-2)^2 + 9

f(-2) = 4(4) + 9

f(-2) = 16 + 9

f(-2) = 25

2) Given that f(x) = 4x - 6

y = 4x - 6

Replace y  with x

x = 4y - 6

MAke y the subject of the forfmula

4y = x+ 6

y = (x+6)/4

SInce x = 2

f^(-1)(2) = (2+6)/4

f^(-1)(2) = 8/4 = 2

3) If f(x) = 6x and g(x) = x+6

f(g(x)) = f(x+6)

f(x+6) = 6(x+6)

Since x = 1

f(g(1)) = 6(1+6)

f(g(1)) = 6(7)

f(g(1)) = 42

5 0
3 years ago
Answer please :(<br> Solve for the missing angles <br> 1:<br> 2:<br> 3:<br> 4:
Basile [38]
Can’t read the paper sry try again please
6 0
2 years ago
Amelia made 62 beautiful 1 inch square title in art class. What is the largest square frame she can make with her titles? Will s
weeeeeb [17]
I believe 15 but not positive
7 0
3 years ago
Read 2 more answers
Please help with this!!
Nadusha1986 [10]

Answer:

i can't see the picture can you pls write it in the chat

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A safety regulation states that the height hh of a guardrail should be 106 centimeters with an absolute deviation of no more tha
iren [92.7K]

Let us say that h is the height of the guardrail. Therefore the inequality equation that we can generate from this scenario is:

| h – 106 | = ± 7

 

There are two ways to solve this, either the equation is positive or negative.

When the equation is positive, therefore:

| h – 106 | = 7

h = 7 + 106 = 113 cm

 

When the equation is negative, therefore:

| h – 106 | = - 7

h = -7 + 106 = 99 cm

 

So the height must be 99 cm to 113 cm

6 0
3 years ago
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