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3 years ago

9. Alan invests £425 in a savings account paying 4.14% compound interest.

Mathematics

1 answer:

Artyom0805 [142]3 years ago

6 0

The answer is a cause Alan

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Let p= x^2-7.

Advocard [28]

Since p = x² - 7, you can substitute/plug in p for x² - 7

So:

(x² - 7)² - 4x² + 28 = 5

(p)² - 4x² + 28 = 5 You can factor out -4 from (-4x² + 28)

p² - 4(x² - 7) = 5 Plug in p

p² - 4p = 5 Subtract 5

p² - 4p - 5 = 0 Your answer is C

8 0

3 years ago

3 ⅕ -⅔ divided by 2 ⅘

spin [16.1K]

Answer:

160/196

Step-by-step explanation:

it would be easier if you converted all fractions to improper fractions

so 3 1/5 would equal 16/5 and 2 4/5 would equal to 14/5

$\frac{14}{5} - \frac{2}{3}$ : to solve this you would need the same common denomenator,

to do this you can multiply 5 and 3 by something to make the lowest common denominator, which would be 15

thus

multiplying first fraction by 3 and the second by 5

42/15 - 10/15 = 32/15

now 32/15 divided by 14/5

the rule for dividing fractions, is flipping the fraction which you will be using to divide, and then multiplying it to the first fraction:

$\frac{32}{14}$ multiplied by $\frac{5}{14}$

thus, answer is 160/196

8 0

3 years ago

Which expression is equivalent to square root a^7

FinnZ [79.3K]

Answer is d

Step-by-step explanation:

If you multiply a^6 and a it equals a^7

3 0

3 years ago

V = (pi r^2 h/3)...solve for h

guapka [62]

Answer:

h = (3×V)/ (pi×r²)

Step-by-step explanation:

$v = \frac{\pi {r}^{2} h}{3}$

$3 \times v = \pi {r}^{2} h$

$h = \frac{3v}{\pi {r}^{2} }$

4 0

3 years ago

Debbie rides her bike to school every day. On Monday, she rode 1.5 miles to school in 10

Charra [1.4K]

Answer:

the second route

Step-by-step explanation:

1.5/10=0.15 miles/minute

3/15=0.2 miles/minute

0.2 is faster than 0.15

4 0

3 years ago