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Mice21 [21]
3 years ago
7

1/2b+9/4=7/4 solve the equation

Mathematics
1 answer:
AlladinOne [14]3 years ago
4 0
First subtract 9/4 from each side

1/2b=-2/4

Simplify the 2/4

1/2b=-1/2

Divide each side by 1/2

b = -1
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Solve as long multiplication / Show work.(So I can understand the steps)<br><br> $655.84 x 0.062 =
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Answer:

Step-by-step explanation:

1.      655.84

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+     393504

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8 0
3 years ago
John is going camping, and he needs to buy a tent. The outdoor store has one that cost $90, but it's on sale for 25% off. What i
pochemuha

Answer:

A

Step-by-step explanation:

<em>Okay so, im not the best at explaining, but so we have a percentage. its 25%. you want to take the 25% and put it over 100 because a percentage is a number or ratio expressed as a fraction of 100. so it will be written as 25%/100</em>

<em />

<em>divide 25 by 100 and you get 0.25, correct? so that's one step further towards the answer.</em>

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7 0
3 years ago
Read 2 more answers
1/5x-8=4. what does x. equal​
Slav-nsk [51]

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12

Step-by-step explanation:

if you multiply everything by 5, then you can get rid of the fraction and the equation would now look like this:

x - 40 = 20

and now you can answer this simply

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and since you multiplied 5 beforehand, now you have to divide by 5 to get the real answer

60 ÷ 5 = 12

therefore, x = 12

8 0
4 years ago
An altitude of a right triangle to its hypotenuse divides this hypotenuse into two segments that measure 9cm, and 16cm. What are
ozzi

Answer:

Step-by-step explanation:

Let a be the length of the altitude, then from the given triangles, applying the basic proportionality theorem,  we get

\frac{BD}{AD}=\frac{DC}{BD}

⇒(BD)^{2}=DC{\times}AD

⇒(BD)^2=9{\times}16

⇒BD=\sqrt{144}

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Thus, the length of altitude is: 12 cm.

Now, \frac{AB}{AD}=\frac{AC}{AB}

⇒(AB)^{2}=220

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Also, \frac{BC}{DC}\frac{AC}{BC}

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Thus, the lengths of the legs of this triangle are 14.83 and 20 cm.

6 0
3 years ago
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If F (7) 22, Then F(f-1(22))
jeka57 [31]

Answer:

\boxed{\boxed{f(f^{-1}(22))=22}}

Step-by-step explanation:

\text{If we have}\ f(x)\ \text{and}\ f^{-1}(x),\ \text{then}\\\\\text{if}\ f(a)=b,\ \text{then}\ f^{-1}(b)=a.\\\\\text{Therefore, if}\ f(7)=22,\ \text{then}\ f^{-1}(22)=7.\\\\f(\underbrace{f^{-1}(22)}_{=7})=f(7)=22

6 0
3 years ago
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