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serious [3.7K]
3 years ago
15

Can someone please help with these to problems.. thank you!

Mathematics
2 answers:
MakcuM [25]3 years ago
8 0

PEMDAS

The E stands for exponent, but also powers and square roots.

1. -2√9+4. The square root of 9 is 3. Because the -2 is outside the square root, you have to multiply it by the answer. -2*3=-6. -6+4=-2. The answer to #1 is -2.

2. Doing the same thing you did in #1 in question #2, you get the answer is 29.

Helen [10]3 years ago
3 0
-2 x 3 +4

-6+4

the answer is -2

then for the second one

5+4 x 6

5+24
answer =29
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I need help on this
Naily [24]

Answer:x=90° y=58° z=32°

Step-by-step explanation:

x=90

y=180-(90+32) sum of angles in a triangle is 180

y=58

y+90+z=180 they are supplementary

58+90+z=180

148+z=180

z=180-148

z=32

5 0
4 years ago
(5 pts) A quadratic function f is given by f(x) = ax2 + bx + c where a is not 0. Select all
Vsevolod [243]

Answers:

  • a) True. Plug in x = 0 and it leads to y = c. Therefore, the point (0,c) is on the parabola.
  • b) False. Plug in y = 0 and apply the quadratic formula. One x intercept may sometimes be x = c, but it could easily be other values as well. Or perhaps you may not get any real number solutions at all. See part d) below.
  • c) True. If a < 0, then the leading coefficient is negative. Overall, both endpoints will tend toward negative infinity to produce a parabola that opens downward.
  • d) False. The quadratic may have one x intercept or it may not have any x intercepts at all. It depends on what the discriminant d = b^2 - 4ac is equal to. If d < 0, then we have no x intercepts. If d = 0, then we have exactly 1 x intercept. If d > 0, then we have two different x intercepts.
  • e) True. The vertex's x coordinate is -b/(2a). If b = 0, then the x coordinate of the vertex is 0. The vertical line x = 0 is directly on top of the y axis.
8 0
3 years ago
What is the value of the expression 2 + 32 ⋅ (4 − 1)? <br> A: 24<br> B: 29 <br> C: 33 <br> D: 37
Paul [167]

For this case we have the following expression:

2 + 3 ^ 2 * (4 - 1)

Rewriting the expression we have:

1) First we subtract the numbers within the parenthesis:

2 + 3 ^ 2 * (3)

2) Then, we solve the exponents:

2 + 9 * (3)

3) Then, multiplication:

2 + 27

4) Finally, the addition of numbers is made:

29

Answer:

the value of the expression is:

B: 29

3 0
3 years ago
Read 2 more answers
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A is 7 4 and 3..B is the same...This is my first time with this kind of problem....
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Answer:

15 or 20

Step-by-step explanation:

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