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Vikentia [17]
3 years ago
9

Question 21 of 45 If x + 2/7x = 9, then x = ?

Mathematics
1 answer:
valentina_108 [34]3 years ago
4 0
I partly sure it’s x=7
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Pleaseee help me asap
pychu [463]

Answer:

k = 13.5

Step-by-step explanation:

Setup proportion and solve for k:

\frac{k}{9} =\frac{4.5}{3} \\3k = 40.5\\k=13.5

8 0
3 years ago
which of the tables represents a function? table a input output 4 3 3 2 3 1 table b input output 1 3 3 5 5 7 table c input outpu
bazaltina [42]
Table b represents a function, the reason being that for each value of input, there is one and only one value of output.
7 0
3 years ago
Read 2 more answers
. Which of the following equations is(are)
BARSIC [14]

Answer:

C . 5x-3y=-15

Step-by-step explanation:

3 0
3 years ago
What work do i need to show?
stealth61 [152]
You have to show finding the square root of it ______        ___       __
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12x=15
x=5/4
4 0
3 years ago
To the nearest foot, what is the height of the fireworks when they explode?
MrMuchimi

Answer:

<h3>87 feet</h3><h3>1. You can find the  value of the vertex of the parabola as following: </h3><h3 /><h3 /><h3 /><h3>2. Substitute values: </h3><h3 /><h3>a=-16 </h3><h3 /><h3>b=70 </h3><h3 /><h3>Then: </h3><h3 /><h3>  </h3><h3 /><h3 /><h3 /><h3>3. Substitute the value obtained into the equation given in the problem. Therefore, you obtain the following result: </h3><h3 /><h3 /><h3 /><h3>4. To the nearest foot: </h3><h3 /><h3>h=87 feet</h3>

Step-by-step explanation:

<h3>#hopeithelps</h3><h3>stay safe and keep well</h3><h3 /><h3>mark me as brain liest pls</h3>
6 0
3 years ago
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