2 years ago

Solve the quadratic equation.-7n^2=-448

Mathematics

1 answer:

Zolol [24]2 years ago

5 0

Answer:

n = 8

Step-by-step explanation:

-7n² = -448

=> n² = -448 / -7

=> n² = 64

=> n = $\sqrt{64}$

=> n = 8

Hope it helps :)

Please mark my answer as the brainliest

You might be interested in

A scientist builds a Mars rover that can travel 4.9 centimeters per second on flat ground.

tatyana61 [14]

Answer:

75.95cm

Step-by-step explanation:

4.9 multiplied by 15 will represent the 15 seconds

4.9 • 15 = 73.5

4.9 divided by 2 will equal the 1/2 seconds

4.9 ÷ 2 = 2.45

add them all together

73.5 + 2.45 = 75.95 cm

7 0

3 years ago

Read 2 more answers

which choice is the explicit formula for the following geometric sequence 0.5,-0.1, 0.02, -0.004, 0.0008

defon

Hello,

Answer is C

$a_1=0.5=\dfrac{1}{2} \\\\a_2=-0.1=-\dfrac{1}{10} =a_1*(-\dfrac{2}{10} )=a_1*(-\dfrac{1}{5} )\\\\a_3=0.02=\dfrac{2}{10^2} =a_2*(-\dfrac{2}{10} )=a_2*(-\dfrac{1}{5} )=a_1*(-\dfrac{1}{5} )^2\\...\\a_n=a_1*(-\dfrac{1}{5} )^{n-1}\\\\\boxed{a_n=0.5*(-0.2)^{n-1}}\\$

8 0

3 years ago

Pls help urgently extra points and mark brainlist

tankabanditka [31]

Answer:

(3+2)×5= 5 power 2

5 power 3= 125

10 power 2 over 2= 50

Step-by-step explanation:

6 0

2 years ago

Please answer I need this answer fast please

Fiesta28 [93]

its just a basic logarithmic law.

4 0

2 years ago

Read 2 more answers

Find the value for the side marked below.

KatRina [158]

Answer:

167.7

Step-by-step explanation:

210cos(37)=167.7134571

just type it in a calculator

7 0

3 years ago

Solve the quadratic equation.-7n^2=-448​

Solve the quadratic equation.-7n^2=-448