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Stolb23 [73]
4 years ago
8

1.3(8-b)+3.7b= -5.2 solve and check answer

Mathematics
2 answers:
Paraphin [41]4 years ago
6 0

Answer:

b = -6.5

Step-by-step explanation:

I am 100% sure thts the right answer

Dafna1 [17]4 years ago
3 0

Answer:

b=-6.5 is your answer.

Step-by-step explanation:

What you have to do is get b by itself.

<em>1.3(8-b)+3.7b=-5.2</em>

<em>10.4-1.3b+3.7b=-5.2</em>

<em>2.4b+10.4=-5.2</em>

<em>2.4b=-15.6</em>

b=-6.5 is your answer.

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Put this equation into slope- intercept form. -2x + 3y = 9​
AveGali [126]

Answer:

y = 2/3x + 3

Step-by-step explanation:

In order to put it in slope intercept form (y = mx + b), y needs to be isolated.

Add 2x to both sides:

-2x + 3y = 9​

3y = 2x + 9

Then, divide both sides of the equation by 3.

3y = 2x + 9

y = 2/3x + 3 is the equation in slope intercept form

8 0
3 years ago
The architects side view drawing of a saltbox-style house shows a post that supports the roof ridge. The support post is 10 ft t
pochemuha
These calculations are based on the drawing of the file enclosed.

There are three right triangles.

From the big right triangle:

a^2 + b^2 = 25^2

From the small right triangle on the left side:


(25-x)^2 + 10^2 = a^2

From the small right triangle on the right side

x^2 +10^2 = b^2

=> (25-x)^2 + 10^2 + x^2 + 10^2 = a^2 + b^2

=> (25-x)^2 + 10^2 + x^2 + 10^2 = 25^2

=> 25^2 - 50x + x^2 + 10^2 + 10^2 = 25^2

=> x^2 -50x + 100 =0

Use the quadratic formular to find the roots:

x = 2.1 and x = 47.9

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8 0
3 years ago
Read 2 more answers
What is f–1(8)??<br><br> Please select the best answer
notka56 [123]

Answer:

f^{-1}(8)=\frac{3}{2}

Step-by-step explanation:

Given f(x)=2x+5

We have to find f^{-1}(8)

In order to find f^{-1}(x) we have to make x as the subject of the formula

Let us assume f(x)=y

⇒2x+5=y

Subtracting both sides by 5

2x+5-5=y-5

2x=y-5

Dividing both sides by 2

\frac{2x}{2}=\frac{y-5}{2}

⇒x=\frac{y-5}{2}

Now substituting y with x

we have f^{-1}(x)=\frac{x-5}{2}

Now f^{-1}(8)=\frac{8-5}{2}

=\frac{3}{2}

So option (ii) is correct


5 0
3 years ago
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Slav-nsk [51]
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3 years ago
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What is the multiplicative inverse of −18?
AlexFokin [52]

Answer:

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3 years ago
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