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2 years ago

Which statement is true about the solution ?

Mathematics

1 answer:

Harrizon [31]2 years ago

4 0

Answer:

There are no real solutions to this equation

Step-by-step explanation:

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Hello! Can someone help with this question?

IgorC [24]

Hello! :)

$\large\boxed{\text{70 seconds}}$

Use a proportion to find how many seconds are needed to fold 5 shirts.

We are given that he takes 28 seconds to fold 2 shirts:

28 sec : 2 shirts

We are not given the amount of time needed for 5 shirts, which we need to solve:

x seconds : 5 shirts

Express in a fraction:

$\frac{2 shirts}{28 seconds} = \frac{5 shirts}{xseconds}$

Cross multiply and simplify:

$2 * x = 5 * 28\\\\2x = 140\\\\x = 70 sec$

Therefore, he needs 70 seconds to fold 5 shirts.

5 0

3 years ago

Whats going on in this attachment help thanks xD

rodikova [14]

Ratio remains same

$\\ \rm\Rrightarrow \dfrac{4}{6x-3}=\dfrac{3}{2}$

$\\ \rm\Rrightarrow 8=3(6x-3)$

$\\ \rm\Rrightarrow 8=18x-9$

$\\ \rm\Rrightarrow 18x=17$

$\\ \rm\Rrightarrow x=17/18$

7 0

2 years ago

-7-7 (2m-7) = 7 (6+m)

levacccp [35]

Answer:

m= 0

Step-by-step explanation:

this is the right answer

-7-14m+49=42+7m

42-14m=42+7m

14m+7m=42-42

21m=0

m=0

4 0

2 years ago

Read 2 more answers

There are five envelopes on a table. Four of the envelopes are marked 8, 2, 4 and 1. You are told that the mean of the numbers o

Lostsunrise [7]

Answer: 16

Step-by-step explanation:

3 0

2 years ago

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

2 years ago

Read 2 more answers