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Ostrovityanka [42]

3 years ago

6

Solve by quadratic equation.x(x+5)=0

2 answers:

motikmotik3 years ago

7 0

Answer: x^2 + 5x = 0

Work: x(x + 5)

x(x) + x(5)

x^2 + 5x

Artyom0805 [142]3 years ago

3 0

Answer:Algebra Examples Multiply x x by x x . Move −5 - 5 to the left of x x . Use the quadratic formula to find the solutions. Substitute the values a=1 , b=−5 , and c=0 into the quadratic formula and solve for x .

Step-by-step explanation:

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Find the volume of the cone. Use 3.14 for n. Round to the nearest tenth.

enyata [817]

Answer:

$1590.6cm {}^{3}$

Step-by-step explanation:

$volume \: of \: a \: cone \: v = \frac{1}{3}\pi \: r {}^{2} h \\ radius = \frac{diameter}{2} = \frac{15}{2} = 7.5 \\ v = \frac{1}{3} \times 3.42 \times (7.5) {}^{2} \times 27 \\ v = \frac{3.142 \times 7.5 \times 7.5 \times 27}{3} \\ v = \frac{4771.9125}{3} = 1590.6375 \\ v = 1590.6cm {}^{3} (approximatly) \\ please \: rate \: and \: mark \: brainliest$

7 0

2 years ago

7900 dollars is placed in an account with an annual interest rate of 5.5%. How much will be in the account after 11 years?

My name is Ann [436]

Answer:

$\$12,679.50$

Step-by-step explanation:

we know that

The simple interest formula is equal to

$A=P(1+rt)$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem we have

$t=11\ years\\ P=\$7,900\\ A=?\\r=5.5\%=5.5/100=0.055$

substitute in the formula above

$A=7,900(1+0.055*11)$

$A=7,900(1.605)$

$A=\$12,679.50$

6 0

3 years ago

What is the variable x in 40+10x=5x-30

konstantin123 [22]

40 + 10x = 5x - 30

To begin isolating x, subtract 40 from both sides.

40 + 10x - 40 = 5x - 30 - 40

10x = 5x - 70

Subtract 5x from both sides.

10x - 5x= 5x - 70 - 5x

5x = -70

Finally, divide both sides by 5.

5x/5 = -70/5

x = -14

Answer:

x = -14

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4 years ago

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natta225 [31]

I would say the answer would be b

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3 years ago

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Kara owns 3 2⁄7 acres of farming land. She grows carrots on 1⁄6 of the land. On how many acres of land does Kara grow carrots?

kotegsom [21]

Answer:

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Step-by-step explanation:

6 0

4 years ago

Read 2 more answers