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Lapatulllka [165]
3 years ago
12

Write an equivalent expression in standard form. (2x + 5)(x + 1)

Mathematics
1 answer:
Mrac [35]3 years ago
5 0
2x^2+7x+5

step by step
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7n+5=96 so what is the answer
Wittaler [7]

Answer:

n = 13

Step-by-step explanation:

7n + 5 = 96

Subtract 5 from both sides to get rid of the 5 on the right side:

7n + 5 - 5 = 96 - 5

7n = 91

Divide both sides by 7 to get rid of the coefficient of n:

7n / 7 = 91 / 7

n = 13

6 0
3 years ago
Read 2 more answers
A tank has a capacity of 10 gallons. When it is full it contains 15% alcohol. How many gallons must be replaced by an 80% soluti
PIT_PIT [208]

Answer:

8.46 gallons needed to be replaced

Step-by-step explanation:

Let x be the alcohol amount that replaced

-Original has concentration of 15% multiply by the amount of 10 ,which is equal to (0.15×10).

-Removed has concentration of 15% multiply by the amount of x ,which is equal to (0.15 × X).

-Added has concentration of 80% multiply by the amount of X ,which is equal to (0.8× X).

-Solution has concentration of 70% multiply by the amount of 10 ,which is equal to (0.70×10).

So that, the equation will be:

Solution=Original + added - removed

7=1.5+0.8x-0.15x

7-1.5=0.65x

0.65x=55

x=55/0.65

x=8.46

8.46 gallons needed to be replaced.

5 0
3 years ago
Can someone please answer for d and b
r-ruslan [8.4K]

Answer:

d=2√2, b=\frac{3\sqrt{2}}{2}

Step-by-step explanation:

first triangle is a 30-60-90

so, sides x-x√2-2x

x=2

therefore d=2√2

second triangle is 45-45-60

sides, 1-1-√2

which means b√2=6

b=6/√2 ---> multiply by √2/√2 to get ride of the √2 denominator

b=6√2/4 , simplify

b=\frac{3\sqrt{2}}{2}

3 0
3 years ago
The annual rent of the house is 3600$ . Find the rent of 5 months
eduard

Answer:

1500 dollars

Step-by-step explanation:

annual means yearly and we want to find how much it will cost for 5 months

First thing we want to do is find how much it cost every month and to do that we divide 3600 by 12

3600/12=12 so it cost 300 dollars monthly

then we just multiply that by 5

5x300=1500 so it cost 1500 dollars for 5 months

7 0
3 years ago
Read 2 more answers
The triangle ABC in the figure provided has midpoints labeled M and N and O.
makvit [3.9K]
HoHm : B means that starting at point B, you do a half-turn about m. This puts point B where A is. Continuing, this point is again allowed to to do a half-turn but this about o so that the point ends up at C.
The answer is Point C.<span />
3 0
3 years ago
Read 2 more answers
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