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LuckyWell [14K]
3 years ago
14

Does anyone know this?

Mathematics
1 answer:
Marrrta [24]3 years ago
8 0

Answer:

f(-9) = 279

Step-by-step explanation:

f(x) = 4x^2 + 7x + 18

f(-9) = 4(-9)^2 +7(-9) + 18

       = 4(81) - 63 + 18

       = 324 - 63 + 18

       = 279

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0.6 is what as a decimal
bulgar [2K]

Answer:

0.6

Step-by-step explanation:

i hope this helps...

5 0
2 years ago
8989890+85769090790509709-590
stich3 [128]

Answer:

8.5769091e+16

Step-by-step explanation:

7 0
3 years ago
Plz help I’m stuck and I can’t answer
Margaret [11]

Answer: the first one is 14 and the second one is 5

Step-by-step explanation:

7 0
3 years ago
2. Round 459 to the nearest hundred.<br> O<br> 460<br> 450<br> 500<br> 400
KonstantinChe [14]

Answer:

The answer is 500

Step-by-step explanation:

When you round to the hundred, you look at the 10s place. If the 10s place is 5,6,7,8, or 9, you round the hundred up. In this case, it is 459 so you would round up to 500. Have a nice day!!!

5 0
2 years ago
If the surface area of the box in the diagram is 204.25 square feet, what is the value of ‘x’?
Alexandra [31]

Note: Consider x be the breadth of the box.

Given:

The surface area of the box is 204.25 square feet.

Length of the box = 10 ft

Breadth of the box = x ft

Height of the box = 6.5 ft

To find:

The value of x.

Solution:

The surface area of a cuboid is:

SA=2(lb+bh+hl)

Where, l is length, b is breadth and h is height of the cuboid.

Putting SA=204.25,  l=10,\ b=x,\ h=6.5 in the above formula, we get

204.25=2(10\times x+x\times 6.5+6.5\times 10)

204.25=2(10x+6.5x+65)

204.25=2(16.5x+65)

Using distributive property, we get

204.25=2(16.5x)+2(65)

204.25=33x+130

204.25-130=33x

74.25=33x

Divide both sides by 33.

\dfrac{74.25}{33}=x

2.25=x

Therefore, the correct option is B.

7 0
3 years ago
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