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poizon [28]
3 years ago
6

What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.x = + √7/9 and x = ±1 x = + √7/9 and x = ±

i x = +i √7/9 and x = ±1 x = +i √7/9 and x = ±I 
Mathematics
2 answers:
snow_tiger [21]3 years ago
6 0

Answer:

Step-by-step explanation:

9x⁴ – 2x² – 7 = 0

Let's say that u = x²:

9u² – 2u – 7 = 0

Factor:

(u – 1) (9u + 7) = 0

u = 1, -7/9

Since u = x²:

x² = 1, -7/9

x = ±1, ±i √(7/9)

Andre45 [30]3 years ago
3 0

Answer:

the answer is c on edgenunity

Step-by-step explanation:

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Please help!! what's the answer
Whitepunk [10]

Answer:

B 244

Step-by-step explanation:

You can split up the polygon into two separate rectangles, one smaller one on top and one bigger one below.

Area of smaller rectangle = 6 × (14-8)

                                          = 36

Area of bigger rectangle = 26 × 8

                                         = 208

Total area of polygon = 36 + 208

                                    = 244

7 0
3 years ago
You are _____ to commit a Type I error using the 0.05 level of significance than using the 0.01 level of significance. Group of
soldi70 [24.7K]

More likely -You are more likely to commit a Type I error

According to statement

we have to find the type 1 error by using the significant levels.

we are commit a MORE LIKELY to find the error by rejecting a true null hypothesis using the 0.05 level of significance than using the 0.01 level of significance.

So, More likely -You are more likely to commit a Type I error

Learn more about HYPOTHESIS here brainly.com/question/11555274

#SPJ4

5 0
2 years ago
A garden is 6 yards 24 inches wide and 5 yards long.<br> The ratio in simplest form is ??
Anna007 [38]
4 : 3 ratio
Break it down to inches and simplify
8 0
4 years ago
The length of two sides of triangle are 4cm and 5cm. Between what two
Elanso [62]

Answer:

1 and 9

Step-by-step explanation:

By the Triangle Inequality Theorem, the sum of two side lengths of a triangle is always greater than the length of the third side.

In other words, in a triangle with side lengths a, b, and c, we always have a+b > c.

Applying this to this question, the other side length, x, must satisfy the following inequalities:

4+5 > x,\\x+5 > 4,\\x+4 > 5.

Solving these inequalities gives

x < 9,\\x > -1,\\x > 1.

Combining these solutions, we have 1 < x < 9. Therefore, the length of the third side falls between 1 and 9.

5 0
2 years ago
You are 5
12345 [234]
5 h
_ = _

10 28

You would cross multiply and get 140=10h and you divide both sides by 10 and get 14=h. So the flagpole is 14 feet tall.
3 0
3 years ago
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