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zvonat [6]
3 years ago
13

Evaluate the expression when y=-7. y? +4y-1

Mathematics
1 answer:
Delicious77 [7]3 years ago
5 0

Answer:

20

Step-by-step explanation:

y^2+4y-1=(-7)^2+4(-7)-1=(-7)(-7)-28-1=49-28-1=21-1=20

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6 = 2p + 8 pls help i will give brainlist
Y_Kistochka [10]

Answer:

6 = 2p + 8 \\  \\ 2p + 8 = 6 \\  \\ 2p = 6 - 8 \\  \\ 2p =  - 2 \\  \\ p =   -  \frac{2}{2}  \\  \\ p =  - 1

6 0
2 years ago
Johnny invested $1000 in savings account that yields 2% interest annually. How much will Johnny's investment be worth in 10 year
Ann [662]
Calculate the interest in a year
Multiply the annual percentage of interest by the investment to find the interest.
interest in a year = 2% × 1,000
interest in a year = 0.02 × 1,000
interest in a year = 20
The annual interest is $20

Calculate the interest after 10 years
Multiply the annual interest by 10
interest 10 years = 20 × 10
interest 10 years = 200
The sum of interest after 10 years is $200

Find total investment
investment = first investment + interest in 10 years
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investment = 1,200

The investment will be worth $1,200 in 10 years
4 0
3 years ago
Help with question on Complementary and Supplementary Angles
stiks02 [169]

Step-by-step explanation:

Right angle = 90°

(x + 3) + (x - 1) + (x + 1) = 90

3x + 3 = 90, x = 29.

Supplementary angles = Angles that add up to 180°.

x + (x + 104) = 180

2x = 76, x = 38.

8 0
3 years ago
Which equation shows an example of the associative property of addition? (–7 i) 7i = –7 (i 7i) (–7 i) 7i = 7i (–7i i) 7i × (–7i
mr Goodwill [35]

The equation which shows the associative property of addition is; (–7 + i) +7i = –7 (i +7i).

<h3>What is the associative property of addition?</h3>

Associative property of addition postulates that Changing the grouping of addends does not change the sum of the numbers. As an instance, ( 5 + 3 ) + 4 = 5 + ( 3 + 4 )

Consequently, the equation which shows the associative property of addition is; (–7 + i) +7i = –7 (i +7i)

Read more on associative property of addition;

brainly.com/question/2284106

#SPJ1

5 0
2 years ago
What is 735 divided by 9?
Nataliya [291]

Answer: 81.66 or 81.6

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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