4 years ago

Solve the system of equations. \begin{aligned} &-3y+4x = 13 \\\\ &-5y-6x=-67 \end{aligned} −3y+4x=13 −5y−6x=−67

Mathematics

1 answer:

liberstina [14]4 years ago

8 0

Answer:

x = 7

y = 5

Step-by-step explanation:

We can do this algebraically using substation or elimination or we could do this graphically.

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4 years ago

Find the perimeter of the following shapes 9cm and 4.1?

mario62 [17]

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Step-by-step explanation:

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3 years ago

What is the value of the function f(x) = 2x – 5 when x = 22? A17 B49 C105 D39

enyata [817]

f(x) = 2x – 5

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answer

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3 years ago

What is the sum of the first 50 terms of the series 2 + 17 + 32 + 47+ ...?

Alex

Answer:

$\huge\boxed{18,475}$

Step-by-step explanation:

The terms of this sum make the arithmetic sequence.

The fomula of a sum of n terms of an arithmetic sequence:

$S_n=\dfrac{[2a_1+(n-1)d]\cdot n}{2}$

We have

$a_1=2\\d=17-2=32-12=47-32=15\\n=50$

Substitute:

$S_{50}=\dfrac{[2\cdot2+(50-1)\cdot15]\cdot50}{2}=(4+49\cdot15)\cdot25=(4+735)\cdot25\\\\=739\cdot25=18,475$

3 0

3 years ago

If k = √31 and m = √26, which graph most closely represent the locations of K and M on a number line? The options are in the pic

Dmitry [639]

Answer:

First option

Step-by-step explanation:

√31 = 5.56....

√26 = 5.09....

So m is less than k but greater than 5.

k is greater than k but less than 6.

So the first option is more logical

8 0

3 years ago

Solve the system of equations. \begin{aligned} &-3y+4x = 13 \\\\ &-5y-6x=-67 \end{aligned} ​ −3y+4x=13 −5y−6x=−67 ​

Solve the system of equations. \begin{aligned} &-3y+4x = 13 \\\\ &-5y-6x=-67 \end{aligned} −3y+4x=13 −5y−6x=−67