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coldgirl [10]
3 years ago
7

     Brandon is 6 times as old as Cora. In 4 years, Brandon will be only twice as old as

Mathematics
1 answer:
nalin [4]3 years ago
4 0
C-Cora's\ age\ now\\B-Brandon's\ age\ now\\\\B=6C\ \ \ and\ \ \ B+4=2(C+4)\\\\6C+4=2C+8\\6C-2C=8-4\\4C=4\ \ \ \Rightarrow\ \ \ C=1\ \ \ \Rightarrow\ \ \ \ B=6\cdot1=6\\\\Ans.\ Brandon\ is\ now\ 6\ years.
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the Olympic record for the men's 100m freestyle is 47 seconds. the Olympic record for the women's 50m freestyle is 24 seconds. w
Nikolay [14]

Answer:

Step-by-step explanation:

The unit rate of the 100m race is 2.12... m/s which you get by dividing the 100 meters by the 47 seconds. The unit rate for the 50m race is 2.08... m/s which you get by dividing the 50 meters by the 24 seconds. This means that the record for the 100m race is faster.

5 0
3 years ago
What are the three types of systems of linear equations and how are the different?
Shkiper50 [21]

Answer:

Consistent/Independent, Inconsistent, Dependent

Step-by-step explanation:

<u>Consistent/Independent:</u>

Where there's only one unique solution

<u>Inconsistent</u>

Where there is no solution

<u>Dependent</u>

Where the solution is dependent

5 0
3 years ago
Which two values of x are roots of the polynomial below? x^2-3x+5
Gemiola [76]

Given:

Polynomial x^2-3x+5

To find:

The values of x.

Solution:

x^2-3x+5=0

Quadratic equation formula:

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}

Here a=1, b=-3, c=5.

Substitute the values in the formula, we get

$x=\frac{-(-3) \pm \sqrt{(-3)^{2}-4 \cdot 1 \cdot 5}}{2 \cdot 1}

$x=\frac{3 \pm \sqrt{9-20}}{2}

$x=\frac{3 \pm \sqrt{-11}}{2}

$x=\frac{3 - \sqrt{-11}}{2} \ \text{and} \ x=\frac{3 + \sqrt{-11}}{2}

Option E and option F are the roots of the polynomial.

The values of x are x=\frac{3 - \sqrt{-11}}{2} \ \text{and} \ x=\frac{3 + \sqrt{-11}}{2}.

7 0
3 years ago
How do you make x+2y=6 a linear equation
madreJ [45]
Subtract X
2y=-x+6
Then divide by 2
Y=-1/2x+3
5 0
3 years ago
Read 2 more answers
Explain how you know 7/12 is greater than 1/3 but less than 2/3
Roman55 [17]
7/12
1/3=4/12
2/3=8/12

7/12>1/3
<span>7/12<2/3
</span>

convert all of these to a common denominator:
7/12 , 1/3 , 2/3
---
7/12 = 7/12
1/3 = 4/12
2/3 = 8/12
---
place into compound inequality:
---
(1/3=4/12) < (7/12=7/12) < (2/3=8/12)


3 0
3 years ago
Read 2 more answers
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