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Helen [10]
2 years ago
13

Write an expression for the sequence of operations described below.

Mathematics
1 answer:
NeX [460]2 years ago
3 0

Answer:

(7+z) - y

Step-by-step explanation:

You might be interested in
Which is the completely factored form of 4x2 28x 49? (x 7)(4x 7) 4(x 7)(x 7) (2x 7)(2x 7) 2(x 7)(x 7)
natima [27]

The completely factored form of 4x^2 + 28x + 49 is given by: Option C: (2x+7)(2x+7)

<h3>How to find the factors of a quadratic expression?</h3>

If the given quadratic expression is of the form ax^2 + bx + c, then its factored form is obtained by two numbers alpha( α ) and beta( β) such that:

b = \alpha + \beta \\ ac =\alpha \times \beta

Then writing b in terms of alpha and beta would help us getting common factors out.

Sometimes, it is not possible to find factors easily, so using the quadratic equation formula can help out without any  trial and error.

For this case, the given quadratic expression is:

4x^2 + 28x + 49

So we've to find two numbers such that:

Their sum = b =  28

Their product = ac = 4\times 49 = 196

We can see that 196 is square of 14, and that 14 added twice forms 28, thus:

14 + 14 = 28

14×14 = 196

Writing b = 28 as sum of 14 twice, we get:

4x^2 + 28x + 49 = 4x^2 + 14x + 14x +49 \\4x^2 + 28x + 49 =  2x(2x+7) + 7(2x + 7)\\4x^2 + 28x + 49  = (2x+7)(2x+7)

Thus, the completely factored form of 4x^2 + 28x + 49 is given by: Option C: (2x+7)(2x+7)

Learn more about factorization of quadratic expression here:

brainly.com/question/26675692

8 0
2 years ago
!!please answer quickly and correctly!!
Valentin [98]

Large=40 pounds

small=30 pounds

and this is the solution

3 0
2 years ago
Number 4 i don’t know how to do this one
Kruka [31]

Answer:

r= 3 h = 6 then use 3^2 + 6^2 = l^2

Step-by-step explanation:

3 0
3 years ago
In triangle ABC right angled at B, if tan C= 24/7 find other five<br> trigonometric ratio.
NNADVOKAT [17]

Answer:

it simple a+b=ab

Step-by-step explanation:

bc=bc+c

hope it helps

6 0
2 years ago
5/8 of the prizes at the giant spin were dolls. If there were 64 prizes , how many prizes were not dolls ?
inna [77]
First you find how many prizes were dolls. Then you subtract that number from 64.


5 0
3 years ago
Read 2 more answers
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