All categories

4 years ago

Which expression is equivalent to 3x/5

Mathematics

2 answers:

emmasim [6.3K]4 years ago

7 0

6x/10
12x/20
24x/40
48x/80

wlad13 [49]4 years ago

4 0

Answer:

2x – 4 – 1 + x

is the RIGHT answer

Step-by-step explanation:

You might be interested in

Stella solves the following system of equations using the substitution method.

Lorico [155]

9514 1404 393

Answer:

B. 5x−(−4x−6)=10

Step-by-step explanation:

The first equation gives an expression for y:

y = -4x -6

When that is used in the second equation, the result is ...

5x -y = 10

5x -(-4x -6) = 10 . . . . . . after substituting; matches B

7 0

3 years ago

12x 3000 this is for u my bud answer it quickly

Shkiper50 [21]

Answer:

I know this! It's 36,000.

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

8.What is the lateral area and the surface area of the cone shown below? Round the answers to the nearest tenth.the figure is no

leonid [27]

Answer:

Part 1) The lateral area is $LA=791.7\ ft^{2}$

Part 2) The surface area is $SA=1,244.1\ ft^{2}$

$LA=791.7\ ft^{2}$ , $SA=1,244.1\ ft^{2}$

Step-by-step explanation:

step 1

Find the lateral area of the cone

we know that

The lateral area of the cone is equal to

$LA=\pi rl$

we have

$r=12\ ft$

$l=21\ ft$

substitute

$LA=(3.1416)(12)(21)=791.7\ ft^{2}$

step 2

Find the surface area of the cone

we know that

The surface area of the cone is equal to

$SA=\pi r^{2}+LA$

we have

$r=12\ ft$

$LA=791.7\ ft^{2}$

substitute

$SA=(3.1416)(12)^{2}+791.7=1,244.1\ ft^{2}$

8 0

4 years ago

Terry and Callie do word processing. For a certain prospectus Callie can prepare it two hours faster than Terry can. If they wor

Dahasolnce [82]

Time taken by jerry alone is 10.1 hours

Time taken by callie alone is 8.1 hours

Solution:

Given:- For a certain prospectus Callie can prepare it two hours faster than Terry can

Let the time taken by Terry be "a" hours

So, the time taken by Callie will be (a-2) hours

Hence, the efficiency of Callie and Terry per hour is $\frac{1}{a-2} \text { and } \frac{1}{a} \text { respectively }$

If they work together they can do the entire prospectus in five hours

$\text {So, } \frac{1}{a-2}+\frac{1}{a}=\frac{1}{5}$

On cross-multiplication we get,

$\frac{a+(a-2)}{(a-2) \times a}=\frac{1}{5}$

$\frac{2 a-2}{(a-2) \times a}=\frac{1}{5}$

On cross multiplication ,we get

$\begin{array}{l}{5 \times(2 a-2)=a \times(a-2)} \\\\ {10 a-10=a^{2}-2 a} \\\\ {a^{2}-2 a-10 a+10=0} \\\\ {a^{2}-12 a+10=0}\end{array}$

using quadratic formula:-

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

$x=\frac{12 \pm \sqrt{144-40}}{2}$

$\begin{array}{l}{x=\frac{12 \pm \sqrt{144-40}}{2}} \\\\ {x=\frac{12 \pm \sqrt{104}}{2}} \\\\ {x=\frac{12 \pm 2 \sqrt{26}}{2}} \\\\ {x=6 \pm \sqrt{26}=6 \pm 5.1} \\\\ {x=10.1 \text { or } x=0.9}\end{array}$

If we take a = 0.9, then while calculating time taken by callie = a - 2 we will end up in negative value

Let us take a = 10.1

So time taken by jerry alone = a = 10.1 hours

Time taken by callie alone = a - 2 = 10.1 - 2 = 8.1 hours

3 0

3 years ago

Determine which equations below have x = 15 as a solution Circle all that apply. Explain the method you used to derive your answ

bekas [8.4K]

Answer:

3 x = 15

Step-by-step explanation:

you need to divide the 15 by 10, 3 times and the you will get five

and it says Determine which equations below have x = 15 as a solution.

6 0

3 years ago