3 years ago

Find the Value of X (I need this done quickly)

Mathematics

1 answer:

lions [1.4K]3 years ago

3 0

Answer:

x = 12

Step-by-step explanation:

5x - 7 = 3x + 17

2x -7 = 17

2x = 24

x = 12

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makvit [3.9K]

For the first equation, I put it in y=mx+b form, so y=-3x-9
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2 years ago

PLS HURRY!!!!! 40 POINTS!!!!

grigory [225]

Answer:

2+x

Step-by-step explanation:

2(1-x)=2-2x

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6 0

2 years ago

Read 2 more answers

An academy requires there to be 3 teachers for every 72 students and 5 tutors for every 60 students. How many students does the

vova2212 [387]

For every 24 students there is one teacher. For every 12 students is one tutor. If the Academy had 132 students then you will need 11 tutors.

5 0

2 years ago

In triangle ABC, a = 4, b = 6, and cos C = − 1/4. What is the length of side c?

shusha [124]

The length of side c would be 8.

Step-by-step explanation:

Given that,

a = 4

b = 6

cosC = -1/4

If we are given two sides and angle, the law of Cosines can be used to find the third side:

$c^{2} = a^{2} + b^{2} - 2ab (cos(c))$

By inserting the values in the formula, we get

$c^{2} = 4^{2} + 6^{2} - 2.4.6 (-\frac{1}{4} )$

$c^{2} = 16 + 36 + 12$

$c^{2} = 64$

$\sqrt{c^{2} } = \sqrt{64}$

c = 8.

Therefore, the length of side c would be 8.

7 0

3 years ago

6x squared plus 12x plus 13 equals 2x squared plus 4

Andrews [41]

$12x^2+12x+3=2x^2+4\\\\12x^2-2x^2+12x+3-4=0\\\\10x^2+12x-1=0\\\\a=10;\ b=12;\ c=-1\\\\\Delta=12^2-4\cdot10\cdot(-1)=144+40=184\\\\x_1=\frac{-b-\sqrt\Delta}{2a};\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{184}=\sqrt{4\cdot46}=2\sqrt{46}\\\\x_1=\frac{-12-2\sqrt{46}}{2\cdot10}=\frac{-6-\sqrt{46}}{10};\ x_2=\frac{-12+2\sqrt{46}}{2\cdot10}=\frac{-6+\sqrt{46}}{10}$

6 0

2 years ago