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Sati [7]
3 years ago
14

Evaluati -..- expression when y=-4. y² + 5y +7

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
7 0

Answer:

Step-by-step explanation:  Plug -4 in for each "y" in the equation. Then solve:  -4 squared is 16, 5 times -4 is -20, so you have 16-20+7 which equals 3.

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Negative exponents in denominators can be evaluated using StartFraction 1 Over b Superscript negative and EndFraction nbsp equal
skelet666 [1.2K]

Answer:

b Superscript positive

Step-by-step explanation:

Negative exponents in the denominators can be evaluated by moving the function from the denominator to the numerator and changing the power from negative to the positive.

We have

1/b⁻² = b²

Moving the function with a power from denominator to numerator or from numerator to denominator changes the sign of the power. It is not equal to zero.

This is the property of exponents.

3 0
3 years ago
Please find the value of X for number 4 5 and 6 thank you :)
antiseptic1488 [7]

Answer:

4. x = 6

5. x = 31

6. x = 34

Step-by-step explanation:

4. vertical angles

- 36/6 = 6

5. supplementary angles

180 - 56 = 124

124/4 = 31

6. complementary angle

90 - 22 = 68

68/2 = 34

6 0
3 years ago
Read 2 more answers
Help help help help help just need answer
kirza4 [7]

Answer:

25 miles

Step-by-step explanation:

2 inches represents 10 miles ( divide both parts by 2 )

1 inch represents 5 miles , then

5 inches represents 5 × 5 = 25 miles

5 0
2 years ago
Nineteen more than a number is less than 42
Lelechka [254]
We are trying to find the number that when added to 19, gives us less than 42. We can set up this simple inequality:

19 + x < 42

Now, subtract 19 from both sides:

x < 23

Our number can be anything less than 23.
4 0
3 years ago
Read 2 more answers
Property being illustrated 73=0+73
Bad White [126]

Answer:

yes???

Step-by-step explanation:

your question either doesn't make sense or I just don't know

8 0
3 years ago
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