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svp [43]
3 years ago
15

James determined that these two expressions were equivalent expressions using the values of x = 4 and x = 6. Which statements ar

e true? Check all that apply
Mathematics
2 answers:
GarryVolchara [31]3 years ago
6 0

Answer:

When x=2, both expressions have a value of 18.

The expressions have equivalent values for any value of x.

The expressions have equivalent values if x=8

Step-by-step explanation:

James determined that these two expressions were equivalent expressions using the values of x = 4 and x = 6. Which statements are true? Check all that apply. 7 x + 4 and 3 x + 5 + 4 x minus 1

When x = 2, both expressions have a value of 18.

7x + 4

= 7(2) + 4

= 14 + 4

= 18

3x + 5 + 4x - 1

3(2) + 5 + 4(2) - 1

6 + 5 + 8 - 1

= 18

The expressions are only equivalent for x = 4 and x = 6.

• This is not true because the expression is also equivalent for x = 2

The expressions are only equivalent when evaluated with even values.

When x = 1

7x + 4

7(1) + 4

= 7 + 4

= 11

3x + 5 + 4x - 1

3(1) + 5 + 4(1) - 1

3 + 5 + 4 - 1

= 11

The expressions have equivalent values for any value of x.

Yes, it has an equivalent value at any value of x

The expressions should have been evaluated with one odd value and one even value.

When x = 0, the first expression has a value of 4 and the second expression has a value of 5.

7x + 4

7(0) + 4

= 0 + 4

= 4

3x + 5 + 4x - 1

3(0) + 5 + 4(0) - 1

0 + 5 + 0 -1

= 4

The expressions have equivalent values if x = 8.

7x + 4

7(8) + 4

56 + 4

= 60

3x + 5 + 4x - 1

3(8) + 5 + 4(8) - 1

24 + 5 + 32 - 1

= 60

Sladkaya [172]3 years ago
4 0

Answer:

1,4,7

Step-by-step explanation:

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Please answer this (photo below)
lozanna [386]

Answer:

Please see attached image for the graph

Step-by-step explanation:

To graph the elevation versus time, we start by plotting the first point at time zero (when the climb begins) when Zane is 20 meters below the edge (-20 meters). This corresponds to the point (0, -20).

One second later (1 in the horizontal axis), Zane has moved up 4 meters, now reaching -16 meters. This is the point (1, -16) on the graph.

One second later at time 2 seconds, he is another 4 meters up which corresponds to the point (2, -12) on the graph.

you can go on like this plotting more points on the graph.

Please see the attached image that illustrates this and shows the appropriate line that represents Zane's position versus time (pictured in red)

7 0
4 years ago
Riley invested $8,500 in an account paying an interest rate of 3.8% compounded daily. Assuming no deposits or withdrawals are ma
Tems11 [23]

Answer:

First we subtract 8,500 from the 18,040. What we get from that is 9540. Now we divide 9,540 by 3.8 and see what we get. What we get is 2510.52631579 which means it would take around 2510.52631579 days to pay 18,040. In total that rounds to 7 years. Rounding up by the way

Step-by-step explanation:

6 0
3 years ago
@###GEOMETRY, SEE PHOTO! PLEASE HELP ASAP!####@
Dafna11 [192]
Since this is a right triangle, we can use our trigonometric functions to solve for x.

Since we know the adjacent side and hypotenuse, we will use cosine.

Based on the function \cos(x) = \frac{adj}{hyp}, we can solve for x. The adjacent side is 7 and the hypotenuse is 12. Plugging this in, we get \cos(x) = \frac{7}{12}.

Now, we must use our inverse trigonometric functions to solve for x:
\cos^{-1}(\cos(x)) = \cos^{-1}(\frac{7}{12})

The inverse cosine and cosine on the left side cancel, leaving you with:
x = \cos^{-1}(\frac{7}{12}) = \boxed{54.3^{\circ}}
8 0
4 years ago
Add the following fractions and simplify if needed<br> 2/3 + 1/5 =
masha68 [24]

Answer:

13/15

Step-by-step explanation:

2/3 + 1/5

You first,

  1. Find the L. C. M, i hope u know the full name, if u don't, let me know in the comment section.
  2. the L. C. M is 15
  3. therefore it will be 10+3/15
  4. 13/15
5 0
2 years ago
The rumber of mice living in a field triples each year. What type of function
koban [17]

Answer:

Exponential function

Step-by-step explanation:

we know that

In this problem we have a exponential function of the form

f(x)=a(b^{x})

where

x is the time in years

f(x) is the number of mice living in a field

a is the initial value (originally number of mice)

b is the base

r is the growth rate

b=(1+r)

In this problem

r=200%=200/100=2

b=1+2=3

The exponential function will be

f(x)=a(3^{x})

5 0
4 years ago
Read 2 more answers
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