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vlabodo [156]
3 years ago
8

Can someone explain how these equal 5 and -5 please

Mathematics
1 answer:
uysha [10]3 years ago
6 0
I'm not sure how you obtained -5 as your answer but this is the mathematical explanation. hope this helps!
{x}^{2}  + 3x = 40 \\  {x}^{2}  + 3x - 40 = 0 \\(x + 8)(x - 5) = 0 \\ x =  - 8 \\ x = 5
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Please could you help me with this question. I've been off school for a few weeks and this is my second day back in and I have n
strojnjashka [21]

Answer:

-3,2,5

for the graph start with a point at (0,2) then go over 1 and up 1

Step-by-step explanation:

3 0
3 years ago
i believe that it’s a but i don’t want to get it wrong can someone help me (no wrong answers pleaseee)
VARVARA [1.3K]

Answer:

B

Step-by-step explanation:

For the divisor on the left of the division symbol, the -3 symbolizes that the -3 is a root. This means that when we plug -3 into our divisor, the answer is 0. Therefore, as x+3=0 when x=-3, the divisor is x+3.

Next, for the dividend, we can start on the left with no x multiplied to it and then add one degree of x for each value to the left. This results in

6 + -4 * x¹ + 4 * x² + 2 *x³

= 2x³ +4x² -4x+6

6 0
3 years ago
11) MZHGF = 16x + 4, m EGF = 110°,<br> and MZHGE = 3x + 11. Find x.<br> G<br> H<br> F<br> E
Darya [45]
<h3>Answer:  x = 9</h3>

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

Explanation:

The smaller angles HGE and EGF combine to form the largest angle HGF.

This is an example of the angle addition postulate.

(angle HGE) + (angle EGF) = angle HGF

(3x+11) + (110) = 16x+4

3x+121 = 16x+4

121-4 = 16x-3x

117 = 13x

13x = 117

x = 117/13

x = 9 which is the final answer

We can stop here.

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

Extra info (optional section)

Use this x value to find each angle shown below

  • angle HGE = 3x+11 = 3*9+11 = 27+11 = 38 degrees
  • angle HGF = 16x+4 = 16*9+4 = 144+4 = 148 degrees

Then notice how,

(angle HGE)+(angle EGF) = 38+110 = 148

which is exactly the measure of angle HGF

This confirms that the equation

(angle HGE) + (angle EGF) = angle HGF

is true for that x value of x = 9. Therefore, the answer is confirmed.

6 0
2 years ago
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Which Parent Function is represented by the Table?
iogann1982 [59]

Answer:

B

Step-by-step explanation:It is B because it starts with 2 and adds 1

5 0
2 years ago
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Please help don’t understand question!
JulsSmile [24]

Answer:

{ \sf{ - 2 {a}^{5}  + 4 {a}^{4} + 5 {a}^{3} +  \frac{2}{3}a   }}

4 0
3 years ago
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