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4 years ago

Help Please and Thank You!

Mathematics

1 answer:

Svetllana [295]4 years ago

6 0

Step-by-step explanation:

expand the bracke

so -5(X+6) is -5x-30=15

-5x-30=15 ( add 30 so that no number in the equation) 15+30 is 45

-5x=45(divide by 5 as 45 is multiple of 5)

45/-5=-9 (positive / negative is negative)

X=-9

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the present age of prisca and Ashmaal are in ratio 2:3 . After 4 yrs the ratio of their ages will be 4:5 the present age of pris

Solnce55 [7]

Answer:

he Present age of Prisca will be 4 years .

Step-by-step explanation:

Given as :

The ratio of present age of Prisca and Ashmaal = 2 : 3

Let The present age of Prisca = 2 x years

Let The present age of Ashmaal = 3 x years

After 4 years , the ratio of present age = 4 : 5

i.e $\frac{ 2 x + 4}{3 x + 4}$ = $\frac{4}{5}$

Or, 5 × (2 x + 4) = 4 × (3 x + 4)

Or, 10 x + 20 = 12 x + 16

Or, 12 x - 10 x = 20 - 16

Or, 2 x = 4

∴ x = $\frac{4}{2}$

i.e x = 2

So, The present age of Prisca = 2 x = 2 × 2 = 4 years

And The present age of Ashmaal = 3 x = 3 × 2 = 6 years

Hence, The Present age of Prisca will be 4 years . Answer

4 0

4 years ago

Can someone please help me ?

andreev551 [17]

Resolve os que estão entre () depois las letras F
lo resultado do () faz a conta com o +4 e lo resultado seras la resposta.
sera lo valor de X

6 0

3 years ago

Solve for the roots in simplest form using the quadratic formula:<br> 3x2 + 36 =<br> 24x

sertanlavr [38]

Answer:

x=6,2

Step-by-step explanation:

4 0

3 years ago

Dirk opened up a savings account with $600. At a yearly interest rate of 5 percent that is compounded monthly, how much interest

gladu [14]

Answer:

Hence final answer is $15.17

Step-by-step explanation:

Given that Dirk opened up a savings account with $600.

So P=$600

"At a yearly interest rate of 5 percent"

Means r=5% = 0.05

"compounded monthly" means n=12

i= monthly rate of interest = r/n=0.05/12

"how much interest will Dirk earn in six months." means find Interest when time is 6 months

Plug these values into compound interest formula:

$A=P\left(1+i\right)^t$

$A=600\left(1+\frac{0.05}{12}\right)^6$

$A=600\left(1+0.00417\right)^6$

$A=600\left(1.00417\right)^6$

$A=600\left(1.02528228828\right)$

A=615.169372966

which is approx

A=615.17

Now interest earned will be difference of A and P

Interest =A-P=615.17-600=$15.17

Hence final answer is $15.17

6 0

3 years ago

Help me out with this math problem for 50 points!!!

spin [16.1K]

Answer:

A = 84 $ft^{3}$

Step-by-step explanation:

To find the area of a trapezoid, use this equation:

$A = \frac{a+b}{2}h$

a = top base

b = bottom base

h = height

Let's classify all the sides:

a = 4 ft

b = 10 ft

h = 12 ft

Now, let's plug all these into the equation:

$A = \frac{4+10}{2} (12)$

$A = \frac{14}{2}(12)$ Add what's in the numerator

$A = 7(12)$ Divide 14 by 2

A = 84 $ft^{3}$ Multiply 7 by 12

So, the area of the trapezoid is 84 $ft^{3}$ .

Hope this helps!!

8 0

2 years ago

Read 2 more answers