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baherus [9]
3 years ago
11

Help with 18 pls?????

Mathematics
1 answer:
zavuch27 [327]3 years ago
5 0
Hello there!

To make x the subject of the formula, we need to start by doing "Cross multiply"

(y)(x) = a

yx = a

Solve for x

Divide both sides by y

yx/y = a/y

x = a/y

Good luck with your studies!

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5(x-3)=x+13 what’s the value of x
Lera25 [3.4K]

Answer:

7

Step-by-step explanation:

5(x-3)=x+13

5x-15=x+13

-x      +15

4x=28

divide 28/4

answer is 7

3 0
3 years ago
Read 2 more answers
Given $dc = 7$, $cb = 8$, $ab = \frac{1}{4}ad$, and $ed = \frac{4}{5}ad$, find $fc$. Express your answer as a decimal.
Pachacha [2.7K]

A ↔ B ↔ C ↔ D ↔ E ↔ F

 \frac{1}{4} AD      8      7      \frac{4}{5} AD   ???

AB + BC + CD = AD   <em>segment addition postulate</em>

\frac{1}{4} AD   +   8   +   7   = AD

\frac{1}{4} AD   +       15        = AD

AD         + 60    = 4AD

                  60    = 3AD

                  20    = AD

AB =  \frac{1}{4} AD    =  \frac{1}{4}(20)    = 5

DE =  \frac{4}{5}AD   =  \frac{4}{5}(5)    = 4

CD + DE + EF = CF   <em>segment addition postulate</em>

7   +   4   + EF  = CF

     11        + EF  = CF

Answer: 11 + EF

Note: You did not provide any info about EF.  If you have additional information that you did not type in, calculate EF and add it to 11 to find the length of CF.

7 0
3 years ago
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Answer:

that he is trying to die

Step-by-step explanation:

i don't know just stating the obvious.

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2 years ago
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The ice cream shop has 80 different possible sundaes consisting of 1 flavor of ice cream, 1 syrup, and 1 candy topping. If the i
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<span>4: 80*5*4 </span>
<span>= 1600 diff ice creams flavors. yum. 

</span>
4 0
3 years ago
45% of what number is 27?
gtnhenbr [62]
45% of what number is 27

0.45x = 27
x = 27 / 0.45
x = 60 <== 45% of 60 = 27
5 0
3 years ago
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