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asambeis [7]
3 years ago
15

Which of the following choices will evaluate the expression a2 + b when a = 2 and b = 3?

Mathematics
1 answer:
pshichka [43]3 years ago
3 0
<h3>Answer: A. 7</h3>

Work Shown:

Replace every 'a' with 2, and replace every b with 3

a^2+b = 2^2 + 3 = 4 + 3 = 7

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4 - x + <img src="https://tex.z-dn.net/?f=6%5E%7B2%7D" id="TexFormula1" title="6^{2}" alt="6^{2}" align="absmiddle" class="latex
Lemur [1.5K]

Answer:

x ≤ 19

Step-by-step explanation:

The instructions here are probably "solve for x."  Please include them.

4 - x + 6^2 ≥  21

becomes 4 - x + 36 ≥  21

Now combine like terms.  4 and 36 combine to 40:  40 - x ≥ 21, and so:

19 - x ≥ 0

Adding x to both sies results in

x ≤ 19

Please, include the instructions when you post a question.  Thanks.

3 0
3 years ago
Help me pleaseee :((
Drupady [299]

Answer: x > 6  

The graph would be an empty circle on 6 going higher infinitely.

Step-by-step explanation:

5 0
3 years ago
Divide 81m in ratio 5:4​
Leona [35]

Answer:

45:36

Step-by-step explanation:

Please correct me if not correct.

7 0
3 years ago
Ace autos sells cars and pay sue each month
Lena [83]
Sue's total pay of year will have three parts
1) Fixed Salary for 12 months
one month salary = £1410
so 12 month salary = £1410 x 12 = £16920
2) 26% of total profit
Total cost to the company- £473,500
Total income for the company - £549,000
Profit = Total income for the company - Total cost to the company
= £549,000 - £473,500 = £75500
Sues income from profit = 26% of £75500 = (26 × 75500)/100 = £19630
3) Bonus if Sue sells at least 16 cars
Given number of months when sue solds atleast 16 cars = 4
So bonus income = 4 × 390 = £1560
Adding the three above parts
Sue's total pay for the year = £16920 + £19630 + £1560 = £38110
8 0
3 years ago
The base of a triangle is given as 2b. The height of the triangle is given as 5b-7. Find an expressions for the area of the tria
Tcecarenko [31]

Answer:

Step-by-step explanation:

Area = 1/2 * 2b * (5b - 7)

Area = 1/2 * 2b * (5b - 7) = 24

b * (5b - 7) = 24

5b^2 - 7b = 24

5b^2 - 7b - 24= 0

(b- 3 )(5b + 8) = 0

b = 3                    This the only solution that works.  b can't be minus

The base is 2b or 2 * 3 = 6

4 0
3 years ago
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