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snow_tiger [21]
3 years ago
6

Evaluate f(x) = 4x + 3x^2 − 5 when x = -2. 23 -1 -25 -49

Mathematics
1 answer:
frozen [14]3 years ago
5 0

Answer:

f(-2) = -1

Step-by-step explanation:

One way of doing this is to substitute -2 for x in every place where x shows up:

f(x) = 4x + 3x^2 − 5  →  f(-2) = 4(-2) + 3(-2)^2 − 5  

                                 → f(-2)  = -8    + 3(4) -   5, or f(-2) = 4 - 5, or f(-2) = -1

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7% of 200 is what number?​
andrew-mc [135]

Answer:

7% of 200 is 14

Step-by-step explanation:

200 × 7 ÷ 100

1400 ÷ 100 = 14

Thus, 7% of 200 is 14

<u>-TheUnknownScientist</u>

5 0
3 years ago
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Which table represents exponential growth? A 2-column table has 4 rows. The first column is labeled x with entries 1, 2, 3, 4. T
Papessa [141]

Answer:

Table 2

Step-by-step explanation:

We have the tables:

<u>Table 1:</u>

x: 1  2  3  4

y: 2  4  6  8

<u>Table 2:</u>

x: 1  2  3  4

y: 2  4  8  16

<u>Table 3:</u>

x: 1  2  3  4

y: 2  4  7  11

<u>Table 4:</u>

x: 1  2  3  4

y: 2  4  6  10

An exponential growth data set will show a common ratio between y values. Let's look at each of the ratios from each table.

<u>Table 1:</u>

8/6 = 4/3

6/4 = 3/2

Already, we can see that 4/3 ≠ 3/2, which means that this doesn't have a common ratio. So Table 1 is wrong.

<u>Table 2:</u>

16/8 = 2

8/4 = 2

4/2 = 2

The common ratio here is 2, so we know this is correct.

<u>Table 3:</u>

11/7 = 1.57

7/4 = 1.75

Again, we can see that 1/57 ≠ 1.75, so this is wrong.

<u>Table 4:</u>

10/6 = 1.67

6/4 = 1.5

Again, there is no common ratio here, so this is wrong.

The answer is thus Table 2.

8 0
4 years ago
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Elena L [17]

Answer:

Divided 54 divided by 6 = 9

Step-by-step explanation:

4 0
3 years ago
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Area=[area of the semi circle]+[area of rectangle]
Area of semicircle is given by:
Area=πr^2
where;
radius,r=66/2=33 m
thus;
Area=3.14*33^2
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The area of the rectangle is given by:
Area=89*66
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6 0
3 years ago
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<h3>2 Answers: Angle 4 and angle 2</h3>

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

Explanation:

Supplementary angles add to 180 degrees. Visually, supplementary angles can be glued together to form a straight angle or a straight line.

We see that happens with angles 1 and 4, and this also happens with angles 1 and 2. This is why these two angles make up the answer.

--------------

The other answer choices can be ruled out.

Angles 1 and 9 would be congruent if we knew the shallow sloping lines were parallel. The only time angles 1 and 9 are supplementary is if both are 90 degrees. In any other case, they are not supplementary angles.

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