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klio [65]
3 years ago
14

Harlon wrote the equation uppercase A = 18 (x squared + 1) to find the area of a rectangle that has a length of x squared + 1 an

d a width of 18. He solved for x and got x = plus-or-minus StartRoot StartFraction uppercase A Over 18 EndFraction minus 1 EndRoot Which of the following is an equivalent equation for x?
Mathematics
1 answer:
Arturiano [62]3 years ago
3 0

Answer:

its A

Step-by-step explanation:

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Evaluate the following expression. y + 9 when y = 12
tino4ka555 [31]

Answer:

21

Step-by-step explanation:

y+9 = ?

y=12

12+9=21

5 0
2 years ago
Read 2 more answers
Plzzzz help and I'll give you brainliest ​
sdas [7]

Step-by-step explanation:

Left hand side:

4 [sin⁶ θ + cos⁶ θ]

Rearrange:

4 [(sin² θ)³ + (cos² θ)³]

Factor the sum of cubes:

4 [(sin² θ + cos² θ) (sin⁴ θ − sin² θ cos² θ + cos⁴ θ)]

Pythagorean identity:

4 [sin⁴ θ − sin² θ cos² θ + cos⁴ θ]

Complete the square:

4 [sin⁴ θ + 2 sin² θ cos² θ + cos⁴ θ − 3 sin² θ cos² θ]

4 [(sin² θ + cos² θ)² − 3 sin² θ cos² θ]

Pythagorean identity:

4 [1 − 3 sin² θ cos² θ]

Rearrange:

4 − 12 sin² θ cos² θ

4 − 3 (2 sin θ cos θ)²

Double angle formula:

4 − 3 (sin (2θ))²

4 − 3 sin² (2θ)

Finally, apply Pythagorean identity and simplify:

4 − 3 (1 − cos² (2θ))

4 − 3 + 3 cos² (2θ)

1 + 3 cos² (2θ)

3 0
3 years ago
Mr miller buys a new car for 25,000. he will pay a sales tax of $0.07 for every dollar of the price. he will pay a property tax
bezimeni [28]

Answer:

Step-by-step explanation:

Sales tax          25000(0.07)                   = $1,750.00

Property tax    (25000 / 1000)(14.62) <u>=  + $  365.50</u>

Total tax                                                      $  2115.50

8 0
3 years ago
Which are the correct classifications for the polygon?
Yakvenalex [24]
I believe the correct answer from the choices listed above is option A. THe correct classification of the polygon in the figure would be a concave hexagon. Counting the number of sides, we have 6 sides making it a hexagon. It is concave since one side is <span>hollowed inward.</span>
4 0
3 years ago
Solve v^2 -8v-33=0 by factoring.
katovenus [111]

Answer:

v= -3 and v= 11

Step-by-step explanation:

v^2 - 8v -33 = 0

v^2-11v+3v-33=0

v(v-11) +3(v-11)=0

(v+3)(v-11)=0

v+3=0          and          v-11=0

v=-3                              v=11

5 0
3 years ago
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