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Vika [28.1K]
3 years ago
15

I'm really bad at math!

Mathematics
2 answers:
lidiya [134]3 years ago
6 0

Answer:

i think its 5b + 45

Step-by-step explanation:

im not 100% sure what your asking for but i just distributed the -3 to the 8 and -26 and got 5b -9 -24 + 78. then i combined the like terms to get 5b + 45.

hope this helps !!

Igoryamba3 years ago
3 0

Given : (5b - 9) - 3(8 - 26)

⇒ (5b - 9) - 3(-18)

⇒ (5b - 9) + 54

⇒ 5b - 9 + 54

⇒ 5b + 45

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Complete the square to make a perfect square trinomial. Then, write the result as a binomial squared. q2+11q
Sedbober [7]

Answer:

(q+\frac{11}{2})^2-\frac{121}{4}

Step-by-step explanation:

We have been given an expression q^2+11q. We are asked to complete the square to make a perfect square trinomial. Then, write the result as a binomial squared.

We know that a perfect square trinomial is in form a^2+2ab+b^2.

To convert our given expression into perfect square trinomial, we need to add and subtract (\frac{b}{2})^2 from our given expression.

We can see that value of b is 11, so we need to add and subtract (\frac{11}{2})^2 to our expression as:

q^2+11q+(\frac{11}{2})^2-(\frac{11}{2})^2

Upon comparing our expression with (a+b)^2=a^2+2ab+b^2, we can see that a=q, 2ab=11q and b=\frac{11}{2}.

Upon simplifying our expression, we will get:

(q+\frac{11}{2})^2-\frac{11^2}{2^2}

(q+\frac{11}{2})^2-\frac{121}{4}

Therefore, our perfect square would be (q+\frac{11}{2})^2-\frac{121}{4}.

8 0
3 years ago
Read 2 more answers
Please help!! Question is above in the image
klasskru [66]

9514 1404 393

Answer:

  $503.85

Step-by-step explanation:

The amortization formula can help with this.

  A = P(r/12)/(1 -(1 +r/12)^(-n))

where P is the loan value, A is the monthly payment, r is the annual interest rate, and n is the number of monthly payments.

We want to find P. All of the other values are given.

  P = A(1 -(1 +r/12)^-n)/(r/12)

  P = 32.48(1 -1.012667^-18)/(0.012667) = 31.48·16.0054

  P ≈ 503.85

The equivalent cash price is about $503.85.

7 0
3 years ago
I need help with this!
Leviafan [203]

Solution

f(r) = 3.14r^{2}

Now we have to find the area of the circle when the radius (r) = 4.

Plug in r = 4 in f(r) to get the area of the circle.

f(4) = 3.14(4^{2} )

f(4) = 3.14 * 4 * 4

f(4) = 3.14 *16

f(4) = 50.24

The answer is C. 50.24

7 0
3 years ago
3.0625 divided by 7 in long division
elena-14-01-66 [18.8K]

Answer:

the answer to your question is 0.4375

3 0
3 years ago
In Germany, VAT is at 19%
aleksley [76]

Answer:

Amount of VAT paid by Jeremy is € 9.31 .

Step-by-step explanation:

As given

In Germany, VAT is at 19% .

Jeremy buys a calculator in Germany for €58.31


This price includes VAT.

Let us assume that the cost of calculator excluding tax is x .

19% is written in the decimal form .

= \frac{19}{100}

= 0.19

VAT Price = 0.19 × Cost price of calculator excluding VAT

                 = 0.19 × x

                 = 0.19x

Than

Cost of calaculator + VAT price = Cost of calculator including VAT

x + 0.19 × x = 58.31

x + 0.19x = 58.31

1.19x = 58.31

x = \frac{58.31}{1.19}

x = €49  (Approx)

Thus cost price of calculator excluding VAT is €49  .

VAT Price = 0.19 × Cost price of calculator excluding VAT

                = 0.19 × 49  

                 = € 9.31

Therefore the amount of VAT paid by Jeremy is € 9.31 .

6 0
3 years ago
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