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professor190 [17]
2 years ago
14

Evaluate the expression 72/x2-2 for x=3

Mathematics
1 answer:
Rzqust [24]2 years ago
7 0

Answer:46

Step-by-step explanation:

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What is -3 times x squared?
kvasek [131]
What is -3 times x squared?-9x 
4 0
2 years ago
4 x y -7y +9 x y + 12y
yulyashka [42]

Answer:13xy+5y

Step-by-step explanation:

5 0
3 years ago
A shopper is standing on level ground 800 feet from the base of a 250 foot tall department store the shopper looks up and sees a
Aleks04 [339]

Answer:

The elevation to the top of the building from the point on the ground where the shopper is standing is = 17.35°

Step-by-step explanation:

From the ΔABC

AB = height of the building = 250 feet

BC = 800 ft

Angle of elevation = \theta

\tan \theta = \frac{AB}{BC}

\tan \theta = \frac{250}{800}

\tan \theta = 0.3125

\theta = 17.35°

Therefore the elevation to the top of the building from the point on the ground where the shopper is standing is = 17.35°

8 0
3 years ago
5. Solve the equation. 8/x+3 = 1/x+1
Helga [31]

Answer:

x = -5/7

Step-by-step explanation:

8               1

---------- = ----------

x+3           x+1

Using cross products

8 (x+1) = 1 (x+3)

Distribute

8x+8 = x+3

Subtract x from each side

8x-x +8 = x-x+3

7x+8 =3

Subtract 8 from each side

7x +8-8 =3-8

7x = -5

Divide each side by 7

7x/7 = -5/7

x = -5/7

4 0
3 years ago
Please help me
morpeh [17]

Answer:

No, because the cone has a smaller volume than the ice cream

Step-by-step explanation:

V=4

3πr3=4

3·π·33≈113.09734

Volume of scoop: 113.1 cm^2

V=πr2h

3=π·2.52·10

3≈65.44985

Volume of cone: 65.45 cm^2

65.45 < 113.1

6 0
2 years ago
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