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krek1111 [17]
3 years ago
5

If f(x)=-9x-2, find f(7)

Mathematics
1 answer:
Elza [17]3 years ago
3 0

Answer:

x= -1/5

Let me know if you need an explanation :)

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If you were told to graph a function over the domain -1\leq x\leq 5−1≤x≤5 , identify what x-value we would start with and what x
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Answer:

You would start with 00.-6 and stop a-5954

Step-by-step explanation:

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3 years ago
PART A: A landmark on the first map is a triangle with side lengths of 3 cm, 4 cm, and 5 cm. What are the side lengths of the tr
Greeley [361]

Complete Question:

Johnny printed two maps of a walking trail near his home. The length of the walking trail on the first map is 8 cm.

(a) Choose a length between 5 cm and 15 cm for the walking trail on the second map: ________cm.  

(b) Determine the scale factor from the first map to the second map.

(c)  A landmark on the first map is a triangle with side lengths of 3 cm, 4 cm, and 5 cm. What are the side lengths of the triangle landmark on the second map?  

(d) Draw one of the triangles from part C. Label the side lengths and vertices accordingly. You may use this drawing tool or draw your triangle on paper:

Answer:

(a) Length = 4cm

(b) Scale factor = 0.5

(c) 3cm, 4cm and 5cm are represented by 1.5cm, 2cm and 2.5cm respectively, on the second scale

(d) See attachment for triangle

Step-by-step explanation:

(a) Choose a length between 5 cm and 15 cm

Length =4cm <em>--- This is solely up to you (you can make use of any length between 5 cm and 15 cm)</em>

(b) The scale factor

The scale factor (k) is calculated as:

k = \frac{New\ Length}{Old\ Length}

k = \frac{4cm}{8cm}\\

k = 0.5

(c) What are side lengths of 3 cm, 4 cm, and 5 cm on the second landmark

Using:

k = \frac{New\ Length}{Old\ Length}

The old lengths, in this case are: 3cm, 4cm and 5cm

Make New length the subject

New\ Length = k * Old\ Length

When Length = 3cm

New\ Length = 0.5 * 3cm = 1.5cm

When Length = 4cm

New\ Length = 0.5 * 4cm = 2cm

When Length = 5cm

New\ Length = 0.5 * 5cm = 2.5cm

So: 3cm, 4cm and 5cm are represented by 1.5cm, 2cm and 2.5cm respectively, on the second scale

(d) See attachment for triangle

7 0
3 years ago
7x-x ............................ .
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Answer:

6x

Step-by-step explanation:

6 0
3 years ago
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SOVA2 [1]
What are the statements about the area all I know is the area is 24sq units
4 0
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According to the most recent census, the average total yearly expenses of households in Wake County is $45,900. It is also known
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Answer:

a. The sampling distribution of the sample mean will have a smaller standard deviation than the population.

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c. The shape of the sampling distribution of the sample mean will be skewed right.

Step-by-step explanation:

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