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Alenkasestr [34]
3 years ago
11

When4a-a×За + 7аis simplified it is equivalent to​

Mathematics
1 answer:
Alexxx [7]3 years ago
6 0

Answer:

-3a^2 + 11a

Step-by-step explanation:

= 4a + -3a^2 + 7a

combine like terms

= -3a^2 + 11a

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Increase a length of 24m so that the ratio of the new length to the old length is 11:8.
murzikaleks [220]

Answer:

33m

Step-by-step explanation:

If the ratio of the new length to the old length is 11:8 (simplified ratio)

I like to set up a proportion, like this,

x/24 = 11/8, where x is the undefined new length

x*8 = 24*11 (cross multiply)

8x = 264 (multiply)

x = 33 (divide 8 by both sides)

The new length is 33m.

<em>Hope I helped! Good Luck!</em>

6 0
3 years ago
Read 2 more answers
Please help me find the value of x!
dlinn [17]

Answer:

x = 27

Step-by-step explanation:

line AC and DE are parallels, so the extra angle in the triangle would be 2x because they are corresponding angles.

A triangle adds up to 180, so the equation would be 180 = 72 + 2x + 2x

3 0
3 years ago
4. The value of a copy machine is $8500 when it is purchased. After two years its value is $7475. What is its value after 8 year
zepelin [54]

Answer:

3375 is the answer.

Step-by-step explanation: 8500- 1025=7475

so 1025 is every to years so we need to subtract 7475-1025-1025-1025-1025 so each 1025 is 2 yrs.

I hope this works :)

6 0
3 years ago
A gold bar has a mass of 11.3
Ivanshal [37]

Answer: A. 0.28

Step-by-step explanation:

400/10 = 40

11.3/40 = 0.28

3 0
3 years ago
Someone please please help me with this ! I would really appreciate it
STALIN [3.7K]

Answer:

Both volumes are the same

Step-by-step explanation:

Volume of cylinder = \pir^{2} h

r = radius

h = height

Since area of the circle is given on top,

Area of a circle = \pir^{2}

We know the area is 12

12 = \pir^{2} (we need to find r)

r = \sqrt{\frac{12}{\pi} }

r = 1.954

Now we can find the cylinder's volume:

Volume of cylinder = \pi(1.954)^{2} (6)

Volume of cylinder = 72

To find the volume of the cuboid, we use

Volume of cuboid = lwh

l = length

w = width

h = height

Volume of cuboid = 6 x 4 x 3

Volume of cuboid =  72

This proves that both the volumes are the same.

3 0
3 years ago
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