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kari74 [83]
3 years ago
15

Daniel is three years older than twice his brother's age. Daniel is 17. Fill in the box with the expression that represents the

age of Daniel's brother. Let b represent Daniel's brother's age.
Mathematics
1 answer:
masha68 [24]3 years ago
4 0
Daniel's age is X
Daniel's brother age is Y

X = 3 + ( 2Y )

Y = ( X - 3 ) / 2

In case of Daniel is 17

then his brother's age is = ( 17 - 3 ) / 2 = 7 years
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Identify the zeros of the polynomial function N(x)=1/2 (x-1)(x+3).
zhannawk [14.2K]

Answer:

a:x=-3

c:x=1

Step-by-step explanation:

The zeros of a function are the values of x for which the value of the function f(x) becomes zero.

In this problem, we have the following function:

f(x)=\frac{1}{2}(x-1)(x+3)

Here we want to find the zeros of the function, i.e. the values of x for which

f(x)=0

In order to make f(x) equal to zero, either one of the factors (x-1) or (x+3) must be equal to zero.

Therefore, the two zeros can be found by requiring that:

1)

x-1=0\\\rightarrow x=+1

2)

x+3=0\\\rightarrow x=-3

So the correct options are

a:x=-3

c:x=1

6 0
3 years ago
Find the value of x for which ABCD must be a parallelogram.
densk [106]
For a parallelogram, the parallel sides must be the same length. This means you can set their lengths equal to each other. Get like terms on the same side to calculate x.

3x-5=2x+3
3x-5+5=2x+3+5
3x=2x+8
3x-2x=2x-2x+8
x=8

x=8
4 0
2 years ago
Help please also give an explanation
pochemuha

Answer:

Neither of them are right

Step-by-step explanation:

First, let's actually solve this equation:

8 ( x - 5 ) = 8x + 40

Distribute on the left:

8 ( x - 5 )

( 8 x X ) + ( 8 x ( -5 ) )

8x - 40

8x - 40 = 8x + 40

Add 40 to each side:

8x = 8x + 80

Subtract 8x from both sides:

0 = 80

0 ≠ 80

There are no solutions to the equation

3 0
3 years ago
Read 2 more answers
Why do I keep getting the answer: 35 11/16
Veronika [31]

Answer:

see explanation

Step-by-step explanation:

The sum of the areas of the 2 rooms is

(1 \frac{1}{4} )² + 6² ← change the mixed number to an improper fraction

= (\frac{5}{4} )² + 6²

= \frac{25}{16} + 36

= 1 \frac{9}{16} + 36

= 37 \frac{9}{16}

4 0
3 years ago
What is the following sale price
Snezhnost [94]

Answer:

$5.85

Step-by-step explanation:

To find the percentage of things you can use the percentage formula

p%*x=y

45%*12.99=y

.45*12.99=y

y=5.8455

I rounded up but the question may call for something different. Hope this Helps!

8 0
3 years ago
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