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rusak2 [61]
3 years ago
14

What is the value of 7(x+4)² - 3x when x = 2?

Mathematics
1 answer:
sdas [7]3 years ago
5 0

Answer:  the value of 7x-y is -14.

Step-by-step explanation:

When x=2 and y=4,

To find the value of 7x - y when x =2, y = 4, this means when ever you see x, put 2 in replacement, y, put 4 respectively.

7x - y = 7(2 - 4)

14 - 28

= -14.​

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the ratio of black bags to blue bags is 5 to 3. If there are a total of 185 black bags, then how many blue bags are there?
nlexa [21]

Answer:

There are 111 blue bags

Step-by-step explanation:

Let

x ----> the number of black bags

y ---> the number of blue bags

we know that

\frac{x}{y}=\frac{5}{3}

isolate the variable y

y=\frac{3}{5}x -----> equation A

x=185 ----> equation B

substitute equation B in equation A

y=\frac{3}{5}(185)

y=111

therefore

There are 111 blue bags

8 0
3 years ago
Ash company reported sales of $580,000 for year 1, $630,000 for year 2, and $680,000 for year 3. Using year 1 as the base year,
Elenna [48]

Answer:

Year 2: 109.4%

Year 3: 118.9%

Step-by-step explanation:

<h3>Given;</h3>
  • Ash company reported sales of $580,000 for year 1
  • $630,000 for year 2,
  • $680,000 for year 3.

Now,

For the revenue trend percent for year 2

Year 2: $580,000 / $530,000 × 100 = 109.4%

For the revenue trend percent for year 3

Year 3: $630,000 / $530,000 × 100 = 118.9%

Thus, The answer is 109.4% and 118.9%.

<u>-TheUnknownScientist 72</u>

3 0
2 years ago
Find the circumference of a circle if the radius is 15 ft. Use 3.14 for pi.
Korvikt [17]

Circumference = 2 x radius x Pi

Circumference = 2 x 15 x 3.14

Circumference = 30 x 3.14

Circumference = 94.2 feet

8 0
3 years ago
Read 2 more answers
Please help am very Confused
GuDViN [60]

Answer:

Step-by-step explanation:

n>3

5 0
3 years ago
Find the area of this polygon
Levart [38]
<h3>Answer:   12 square units</h3>

Explanation:

Rectangle ABDE is 4 units across the horizontal, and 2 units tall.

The area of this rectangle is length*width = 4*2 = 8 square units.

Triangle BCD has a base of 4 and height 2. The area of which is base*height/2 = 4*2/2 = 4 square units.

The total area is

rectangle + triangle = 8 + 4 = 12 square units

8 0
2 years ago
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