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Fiesta28 [93]
2 years ago
14

Which equation is equivalent to

Mathematics
1 answer:
Sonja [21]2 years ago
7 0

Answer:(4x2+9)(4x2-9)=0

Step-by-step explanation:(4x2+9)(4x2-9)=0

Your welcome

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I neeed help it’s a word problem
katrin [286]

Answer:

12.50

Step-by-step explanation:

62/5=12.4

60/2=30

5/2=2.5

5 0
3 years ago
A skateboard ramp is 40 feet long and rises from the ground at an angle of 33 degrees. How tall is the ramp?
olga_2 [115]

Answer:

The ramp is 21.8 ft tall.

Step-by-step explanation:

If you convert this into a triangle, 40 ft is the hypotenuse, 33° is the angle next to the right angle (on the horizontal line) and we need to find how tall the ramp is, which will be x. It is very helpful to draw a picture.

We will use the sine ratio because, starting from the given degree of 33, we have the hypotenuse value and need to find the value opposite the degree:

sine=\frac{opposite}{hypotenuse}

Insert values:

sin33=\frac{x}{40}

Multiply 40 to both sides to isolate the variable:

40(sin33)=40(\frac{x}{40})\\\\40*sin33=x\\\\x=40*sin33

Insert the value of x into a calculator:

x=21.7855614

Round if necessary:

x=21.8 ft

Done.

6 0
3 years ago
2+2 I need help with this, please
Vinvika [58]

Answer:

4

Step-by-step explanation:

2 cookies + 2 cookies = 4 cookies!

The more cookies the better!

4 0
3 years ago
Read 2 more answers
One questions here! Please help! (:
Hatshy [7]
\cfrac{c^{-6}d^4}{c^{-16}d^{14}} = \cfrac{c^{16}d^4}{c^{6}d^{14}} = \cfrac{c^{10}}{d^{10}}
7 0
3 years ago
1/3 of the guests chose beef , 5/12 of the guests chose chicken 69 of the guests choose vegetarian how many guests were there at
Vlad1618 [11]

we can call guest x

1/3x+5/12x+69=total guests at the wedding

if we multiply 1/3 by 4 we get 4/12. we can add 4/12 to 5/12 to get 9/12 which can be reduces to 3/4. that means the vegetarian guests make up 1/4 of the wedding. if 69 is 1/4, then we have all the information we need to solve this


25%       69                                                                                                                   -----        ------                                                                                                                       100%        ?


we are solving for the question mark. this is just a diagram. we know 25% of the 100% of the guest and we know that we have 69 of the however many guest. multiply 100 by 69

100x69=6900

now divide 6900 by 25

6900/25=276 guests at the wedding

8 0
3 years ago
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