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katrin [286]
3 years ago
13

If

{1}{7} x +\frac{1}{3} y=4" alt="\frac{1}{7} x +\frac{1}{3} y=4" align="absmiddle" class="latex-formula">, then what does 3x + 7y equal?
A.) 21
B.) 84
C.) -21
D.) 10
Mathematics
2 answers:
NemiM [27]3 years ago
6 0
B is the answer to the question
Y_Kistochka [10]3 years ago
4 0
B would be the answer html bit
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I’m the triangle shown below what is the approximate value of x
Dafna1 [17]

Answer:

The answer is choice B: 22.52 units.

Step-by-step explanation:

We use the Pythagoras's theorem which says for a right triangle with sides x,y and hypotenuse z:

x^2+y^2=z^2.

In our case

z=26

y=13

So we solve for x:

x=\sqrt{z^2-y^2}=\sqrt{26^2-13^2}  =\boxed{22.52\: units.}

Which is choice B.

8 0
3 years ago
GIVEAWAY TO GET 100 POINTS + BRIANLIEST IF YOU ANSWER WHATS 9+10 B)
Misha Larkins [42]

Answer:

My guess is 21

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
4/ PLEASE HELP ME ON THIS. ASAP
rewona [7]

Answer: a,b,d,e are all right beacuse they all relate to the question

Step-by-step explanation:

c how ever is no shown on the graph and is therefor wrong

4 0
3 years ago
What is 20.35 divided by 3 in the standard algorithm
liberstina [14]
20.35 divided by 3 equals 6 (:
4 0
4 years ago
Read 2 more answers
How do I solve for X in x/2 + x-3/5= 3
alexandr402 [8]
First of all,we have to cancel off the denominator.

times 2 to the equation in order to cancel off the denominator "2"
(x2) x+2x-6/5=6
#all numbers in this equation will be timed by 2 as well

then times 5 to cancel off the denominator"5"
(x5) 5x+10x-6=30
#all of them are timed by 5

then u will see this equation:
5x+10x-6=30

plus up the unknown numbers,
15x-6=30

Move the negative number "-6" to the back of 30.

When negative number moved to the other side,it will become positive number.
Same as when positive number moved to the other side,it will become negative number.

Thus,
"-6” moved
become positive "6"
Usually positive means plus"+" while negative means minus"-".

15x=30+6
15x=36

Move 15 to the opposite side,
Timed by 15 become divided by 15.

Just like the positive and negative numbers,they forced to become the opposite things.
positive→negative OR negative→positive
plus→minus OR minus→plus
times→divide OR divide→times

Thus,
x=36÷15
OR u can write as fraction,
x=36/15
x=12/5

final ans:
x=12/5 OR 2.4


3 0
3 years ago
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