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pochemuha
3 years ago
9

Frank is 8 years oldern than his sister. In 3 yrs he will be twice as old as she is. How old are they now?

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
8 0

Answer:

He is 13 & she is 5.

Step-by-step explanation:

In 3 years, he will be 16 & she will be 8.

This will make him twice her age.

In other words, 8+8=16 or you can use the equation 16÷2=8

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Answer:

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Step-by-step explanation:

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2 years ago
Which of the following points could be added to the graph f(x)=-|x+3| to keep the graph a function?
sasho [114]

None of the points could be added to the graph f(x)=-|x+3| to keep the graph a function

<h3>How to determine the point?</h3>

The equation of the function is given as:

f(x) = - |x + 3|

The points are given as:

(0, 3) and (-3, -6)

When x = 0, we have:

f(0) = - |0 + 3|

f(0) = -3 --- different y value from (0, 3)

When x = -3, we have:

f(-3) = - |-3 + 3|

f(-3) = 0 --- different y value from (-3, -6)

This means that the x values point to different y values (this does not represent a function)

Hence, none of the points could be added to the graph f(x)=-|x+3| to keep the graph a function

Read more about functions and relations at:

brainly.com/question/2328150

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6 0
2 years ago
What is the length of AC?<br><br><br> 3 ft<br><br> 4 ft<br><br> 9 ft<br><br> 18 ft
iragen [17]

Answer: The length of AC is 18 ft.

Step-by-step explanation:

By the given diagram,

AM = MB and CN = NB

M and N are the mid points of the sides AB and CB respectively,

Thus, by the mid point theorem,

MN ║ AC,

By the alternative interior angle theorem,

∠BMN ≅ ∠BAC

∠BNM ≅ ∠BCA

Thus, by AA similarity postulate,

ΔBMN ≅ ΔBAC

By the property of similar triangles,

\frac{BM}{BA}=\frac{MN}{AC}

\frac{BM}{BM+MA}=\frac{MN}{AC}

\frac{4}{4+4}=\frac{9}{AC}

\frac{4}{8}=\frac{9}{AC}

4AC=72\implies AC = 18\text{ ft}

Thus, The length of AC is 18 ft.

5 0
3 years ago
Read 2 more answers
Can someone help me please ?!!
mestny [16]

Answer:

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Step-by-step explanation:

5 0
2 years ago
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leva [86]
Isolate "x" onto one side:

5/3 * (6x+3) < 2x - 7

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30x + 15 < 6x - 21

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