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3 years ago

PLSSSSSS HELP MEEEEEEEE, PLSSSSSSSSSSSSSSSSSSSSSS

Mathematics

1 answer:

Xelga [282]3 years ago

5 0

Answer:

b i think

Step-by-step explanation:

i hope this helps

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What is the answer too 6+3=x-8?

LuckyWell [14K]

Answer:

x = 17

Step-by-step explanation:

8 0

2 years ago

Rufus appears before Bill and Ted and offers them a bogus proposition: they must paint a house together with their magical guita

jolli1 [7]

Answer:

6.79

Step-by-step explanation:

-Let X denote the total amount of the job.

-The job has to be done in 5 hrs, therefore the portion done every hour is:

$Rate=\frac{Total}{Time}\\\\=\frac{X}{5}\\\\=\frac{1}{5}X=0.2X$

Therefore, the rate of Bill and Ted working jointly must equal the rate calculated above:

$R_{Bill}=\frac{X}{19}\\\\=\frac{1}{19}X\\\\R_{Bill}+R_{Ted}=R_{required}\\\\\frac{1}{19}X+R_{Ted}=\frac{1}{5}X\\\\R_{Ted}=\frac{1}{5}X-\frac{1}{19}X\\\\=\frac{14}{95}X\\\\\therefore \frac{14}{95}X=1\ hr\\\\X=1\div \frac{14}{95}\\\\=6.7857\approx 6.79$ $hrs$

Hence, Bill working alone should complete the house in 6.79 hrs

6 0

3 years ago

Only the a) part please!!!!

choli [55]

$(i)\\\\2A = \begin{pmatrix}3x \times 2 & 1 \times 2 & 5 \times 2\\0\times 2 & 2x \times 2 & -3 \times 2\end{pmatrix} = \begin{pmatrix}6x & 2 & 10\\0 & 4x & -6\end{pmatrix}\\\\\\(ii)\\\\2A + B = C\\\\\implies \begin{pmatrix}6x & 2 & 10\\0 & 4x & -6\end{pmatrix} + \begin{pmatrix}y & 0 & -4\\1 & -3y & 2\end{pmatrix} = \begin{pmatrix}31& 2 & 6\\1 & 17& -4\end{pmatrix}$

$\implies \begin{pmatrix}6x+y & 2+0 & 10-4\\0+1 & 4x-3y & -6+2\end{pmatrix} = \begin{pmatrix}31 & 2 & 6\\1 & 17& -4 \end{pmatrix}\\\\\\\implies \begin{pmatrix}6x+y & 2 & 6\\1 & 4x-3y & -4\end{pmatrix} = \begin{pmatrix}31 & 2 & 6\\1 & 17& -4 \end{pmatrix}\\\\\text{System of equations},\\\\6x +y =31,~~ 4x -3y = 17\\\\\\(iii)\\\\6x +y-31 =0 \\\\4x-3y -17=0\\\\\text{Solving by cross multiplication method}\\\\\\\dfrac x{1(-17) - (-31)(-3)} = \dfrac y{4(-31) - 6(-17)} = \dfrac 1{6(-3) - 4(1)}$

$\implies \dfrac{x}{-17 -93} = \dfrac{y}{-124 +102} = \dfrac 1{-18-4}\\\\\\\implies -\dfrac{x}{110} = -\dfrac{y}{22} = -\dfrac 1{22}\\\\ \implies \dfrac{x}{110} = \dfrac{y}{22} = \dfrac 1{22}\\\ \\\text{Hence,}\\\\\\x=\dfrac{110}{22}=5,~~~~ y= \dfrac{22}{22} =1$

7 0

2 years ago

Read 2 more answers

Is y=−7x+16 exponential, state if it is growth or decay

Ivenika [448]

Answer:

It is a state of decay.

Step-by-step explanation:

Graph to figure out of it is growth or decay. If it is increasing than it is growth, if it is decreasing it is decay.

Graph:

0 16

1 9

2 2

5 0

3 years ago

When adding square root 25 and -9 which type of number is the sum?

saveliy_v [14]

Answer : C integer

When adding square root 25 and -9 which type of number is the sum

square root (25) is a perfect square number

-9 is an integer. Integer is a whole number that is positive or negative or 0. -9 is a negative number so it is an integer

the value of $\sqrt{25} =5$

Now we find the sum of 5 and -9

5 - 9 = -4

-4 is an integer

So the sum is an integer

3 0

3 years ago