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3 years ago

Which expression is equivalent to -4(2x+3)-(3x+5)

Mathematics

2 answers:

Artemon [7]3 years ago

8 0

Answer:

5x-7

Step-by-step explanation:

vfiekz [6]3 years ago

5 0

Answer:

5x-7

Step-by-step explanation:

= -8x - 12 - 3x + 5

= -8x - 3x - 12 + 5

= 5x-7

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PLEASe help 30POINTS<br><br> What is the length of segment AB ?

lesya692 [45]

Answer:

$\sqrt{74}$

Step-by-step explanation:

<u>Distance between two points</u>

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$\textsf{let}\:(x_1,y_1)=(2,-6)$

$\textsf{let}\:(x_2,y_2)=(7,1)$

$d=\textsf{length of segment AB}$

Substituting points into the distance formula and solving for d:

$\implies d=\sqrt{(7-2)^2+(1-(-6))^2}$

$\implies d=\sqrt{5^2+7^2}$

$\implies d=\sqrt{25+49}$

$\implies d=\sqrt{74}$

7 0

2 years ago

Read 2 more answers

The equation can be used to find the length of AB

dmitriy555 [2]

You can use
Sine25=9/c
Or
Sin25/9=sine 90/c

7 0

4 years ago

How would you answer Q5 e step by step please

Andru [333]

Answer:

$\sqrt{6} -3\sqrt{2}$

Step-by-step explanation:

$\sqrt{150} -\sqrt{96} -\sqrt{162} +\sqrt{72}$

$=\sqrt{25\cdot6} -\sqrt{16\cdot6} -\sqrt{81\cdot2} +\sqrt{36\cdot2}$

$=\sqrt{25}\sqrt{6} -\sqrt{16}\sqrt{6} -\sqrt{81}\sqrt{2} +\sqrt{36}\sqrt{2}$

$=5\sqrt{6} -4\sqrt{6} -9\sqrt{2} +6\sqrt{2}$

$=\sqrt{6} -3\sqrt{2}$

3 0

2 years ago

Read 2 more answers

3. Combine terms: 123a + 26b -4b – 16a.

m_a_m_a [10]

Answer:C) -4a+22b because u add 12a ➕-16a and u get negative 4 then u mines 26b-4b and u get 22

Step-by-step explanation:

6 0

3 years ago

.. 600 is what percent of 150?

Roman55 [17]

Answer:

400%

Step-by-step explanation:

We can write a percent proportion:

600/x = 150/100

a:b = c:d

a and d are linked and b and c are linked. So if a is missing, you would do (b*c)/d to get a, if b was missing, you would do (a*d)/c to get b, etc.

So over here we do

(600*100)/150 = 60,000/150 = 400, so x = 400, so that means it's 400% of 150

We can also use benchmark fractions which I find much easier:

100% of 150 is 150.

So 200% of 150 is 300

So 300% of 150 is 450

And 400% of 140 is 600

Every time it increases by 100%, it also increases by 150 on the other side, which makes sense

Let me know if you have any questions.

4 0

3 years ago