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dexar [7]
2 years ago
5

PLSSS HELP IF YOU TURLY KNOW THISS

Mathematics
2 answers:
nata0808 [166]2 years ago
7 0

Answer:

\frac{0.2x + 1}{7}  = 0.4 \\ 0.2x + 1 =0.4 \times 7 \\ 0.2x + 1 = 2.8 \\ 0.2x = 2.8 - 1 \\ 0.2x = 1.8 \\ x =  \frac{1.8}{0.2}  \\   \boxed{x = 9}

  • <u>x</u><u> </u><u>= 9</u> is the right answer.
emmainna [20.7K]2 years ago
6 0

Answer:

9

Step-by-step explanation:

0.2x+1/7=0.4

multiply 7 on both sides.

you get….

0.2x+1=2.8

Minus 1 on both sides.

0.2x= 1.8

divide .2 on both sides

x=9!

I hope you get it!!

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What is the simplified form of the expressions? a. −6a2b−1 b. 5/y−3
joja [24]

Given:

The expressions are

-6a^2b^{-1}

\dfrac{5}{y^{-3}}

To find:

The simplified form of each expression.

Solution:

We have,

-6a^2b^{-1}

=-6a^2(\dfrac{1}{b})      [\because x^{-n}=\dfrac{1}{x^n}]

=-\dfrac{6a^2}{b}

Therefore, the simplified form of -6a^2b^{-1} is -\dfrac{6a^2}{b}.

We have,

\dfrac{5}{y^{-3}}

=\dfrac{5}{\dfrac{1}{y^3}}      [\because x^{-n}=\dfrac{1}{x^n}]

=5\times \dfrac{y^3}{1}

=5y^3

Therefore, the simplified form of \dfrac{5}{y^{-3}} is 5y^3.

6 0
3 years ago
A soccer field is 100 yd wide and 130 yd long. find the length of the diagonal of such a field. give an exact answer as a radica
Misha Larkins [42]
We know that
<span>applying the Pythagorean theorem
c</span>²=a²+b²
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a=100 yd
b=130 yd
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the answer is
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3 years ago
Please help me with this geometry problem, tysm
bazaltina [42]

Answer: Have a nice day!

Step-by-step explanation:

6 0
3 years ago
A tree 20 feet tall has a shadow of 15 feet. How tall is Biff if his<br> shadow is 36 inches tall?
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I Think the answer is 31 because 20-5 is 15 so 36-5 is 31
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The first consignment shows no association between the t-shirt size and the profit. 

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5 0
3 years ago
Read 2 more answers
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